n AMPLIFIER SECTIONRMS output power

THD 10%, both channels driven

1 kHz

(Low channel) 75 W per channel (5 )

10 kHz

(High channel) 70 W per channel (5 )

80 Hz

(Subwoofer channel) 160 W (8 )

Total power output 450 W

n FM/AM TUNER, TERMINALS SECTIONPreset station FM 15 stations

AM 15 stations

Frequency Modulation (FM)

Frequency range

87.50 - 108.00 MHz (50 kHz steps)

Sensitivity 2.5 V (IHF)

S/N 26 dB 2.2 V

Antenna terminal(s) 75 (unbalanced)Amplitude Modulation (AM)

Frequency range 522 - 1629 kHz (9 kHz steps)

520 - 1630 kHz (10 kHz steps)

Sensitivity

S/N 20 dB (at 999 kHz) 560 V/m

Audio performance (Amplifier)

Input sensitivity/Input impedance

Aux 250 mV,14.7 k

Phone jack

2005 Matsushita Electric Industrial Co. Ltd.. Allrights reserved. Unauthorized copying anddistribution is a violation of law.

SA-AK631GCPColour(S)... Silver Type

Terminal Stereo, 3.5 mm jack

n CASSETTE DECK SECTIONTrack system 4 track, 2 channel

Heads

Record/playback Solid permalloy head

Erasure Double gap ferrite head

Motor DC servo motor

Recording system AC bias 100 kHz

Erasing system AC erase 100 kHz

Tape speed 4.8 cm/s

Overall frequency response (+3 dB, -6 dB at DECK OUT)

NORMAL 35 Hz - 14 kHz

S/N ratio 50 dB (A weighted)

Wow and flutter 0.18 % (WRMS)

Fast forward and rewind time Approx. 120 seconds with

C-60 cassette tape

n DISC SECTIONDiscs played [8 cm or 12 cm]

(1) CD-Audio (CD-DA)

(2) CD-R/RW (CD-DA, MP3 formatted disc)

(3) MP3

Bit rate

MP3 32 kbps - 320 kbps

Sampling frequency

MP3 32 kHz, 44.1 kHz, 48 kHz

CD 44.1 kHz

Decoding 16 bit linear

CD Stereo System

Specifications

ORDER NO. MD0503065C3

Digital filter 8 fs

D/A converter MASH (1 bit DAC)

Pickup

Wavelength 780 nm

Beam Source Semiconductor laser

Audio output (Disc)

Number of channels 2 (Stereo) (FL,FR)

n GENERALPower Supply

AC 110-127/220-240V, 50/60Hz

Power consumption 279 W

Power consumption in standbymode

0.85 W

1 Before Use 4 2 Before Repair and Adjustment 4 3 Protection Circuitry 4 4 Prevention of Electro Static Discharge (ESD) to

Electrostatically Sensitive (ES) Devices 5 5 Handling the Lead-free Solder 5

5.1. About lead free solder (PbF) 5

6 Handling Precautions For Traverse Deck 6 7 Precaution of Laser Diode 7 8 Accessories 8 9 Operation Procedures 9 10 Disassembly and Assembly of Main Component 11

10.1. Disassembly flow chart 11

10.2. Gear for servicing (jig) Information 12

10.3. Disassembly of Top Cabinet 13

10.4. Disassembly of CD Lid 13

10.5. Disassembly of Rear Panel 15

10.6. Disassembly of CD Mechanism Unit 15

10.7. Disassembly of Main P.C.B. 16

10.8. Disassembly of Sub-Power P.C.B. 16

10.9. Disassembly of Power P.C.B. 17

10.10. Disassembly of Transformer P.C.B. & Voltage Selector 18

10.11. Disassembly of Front Panel Unit 19

10.12. Disassembly of Deck Mechanism Unit 19

10.13. CD Mechanism Main Component Replacement

Procedures 20

10.14. Replacement for the pinch roller ass and head block 34

10.15. Replacement for the Deck motor ass, capstan belt A,

capstan belt B and winding belt 35

10.16. Replacement for the cassette lid ass 38

10.17. Rectification for tape jam problem 39

Dimensions (W x H x D) 250 x 330 x 341 mm

Mass 7.1 kg

Operating temperature range +5 to +35C

Operating humidity range 5 to 90% RH (no condensation)

n SYSTEMSC-AK631 (GCP) Music center: SA-AK631 (GCP)

Speaker: SB-AK630 (GC)

Subwoofer: SB-WAK630 (GC)

Notes: 1. Specifications are subject to change without notice. Mass and

dimensions are approximate.

2. Total harmonic distortion is measured by the digital spectrumanalyzer.

11 Checking for major P.C.Bs 40 11.1. Checking of Main P.C.B. 40

11.2. Checking of Transformer P.C.B. 41

11.3. Checking of Panel, Deck & Deck Mechanism P.C.B. 42

11.4. Checking of Power P.C.B. 43

12 Self-Diagnostic Function 44 12.1. Self-diagnostic display 44

12.2. How to enter the Self-Diagnostic Function 44

12.3. Cassette Mechanism Test (For error code H01, H02, H03,

F01) 44

12.4. CD Mechanism Test (F15, F26, F16, F17, F27, F28, F29,

F30, H15 & H16) 44

12.5. To clear all Error code 45

12.6. To exit from Self-Diagnostic function 45

12.7. Power Amplifier Failure (F61) 45

12.8. Description of Error Code 45

13 CD Test Mode Function 47 13.1. How to set CD test mode 47

13.2. CD Automatically Adjustment result indication 47

13.3. CD Mecha Aging Test Mode (CR20) 47

13.4. Micon ROM Checksum and Version Display Mode 48

14 Measurements and Adjustments 49 14.1. Cassette Deck Section 49

14.2. Tuner Section 49

14.3. Alignment Points 50

15 Block Diagram 51 16 Voltage Measurement 59 17 Schematic Diagram 61

17.1. (A) CD Servo Circuit 62

17.2. (B) Main (Tuner) Circuit 64

17.3. (B) Main Circuit 65

CONTENTS Page Page

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17.4. (C) Panel Circuit 70

17.5. (D) Transformer Circuit 72

17.6. (E) CD Detect Circuit, (F) Spindle Position Circuit, (G) CD

Loading Circuit & (L) Sub-Power Circuit 73

17.7. (H) Power Circuit 74

17.8. (I) Deck Circuit & (J) Deck Mechanism Circuit 75

18 Printed Circuit Board 77 18.1. (A) CD Servo P.C.B. 77

18.2. (B) Main P.C.B. 78

18.3. (C) Panel P.C.B. 80

18.4. (D) Transformer P.C.B. 82

18.5. (E) CD Detect P.C.B., (F) Spindle Position P.C.B., (G) CD

Loading P.C.B. & (K) Tuner Pack P.C.B. 83

18.6. (H) Power P.C.B. & (L) Sub-Power P.C.B. 84

18.7. (I) Deck P.C.B. & (J) Deck Mechanism P.C.B. 86

19 Wiring Connection Diagram 87

20 Illustration of IC, Transistors and Diodes 88 21 Terminal Function of IC 89

21.1. IC7002 (MN6627953HB) Servo processor/ Digital signal

processor/ Digital filter/ D/A converter 89

21.2. IC7003 (AN8739SBTE2) Focus coil/ Tracking coil/

Traverse motor/ Spindle motor drive 89

21.3. IC2801 (C2CBJG000561) System Microprocessor 90

22 Troubleshooting Guide 92 23 Parts Location and Replacement Parts List 93

23.1. Deck Mechanism (RAA3412-S) 94

23.2. CD Loading Mechanism (RD-DAC026-S) 97

23.3. Cabinet 100

23.4. Electrical Parts List 102

23.5. Packing Materials & Accessories Parts List 111

23.6. Packaging 112

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1 Before UseBe sure to disconnect the mains cord before adjusting the voltage selector.Use a minus(-) screwdriver to set the voltage selector (on the rear panel) to the voltage setting for the area in which the unit willbe used. (If the power supply in your area is 117V or 120V, set to the 127V position.)Note that this unit will be seriously damaged if this setting is not made correctly. (There is no voltage selector for some countries,the correct voltage is already set.)

2 Before Repair and AdjustmentDisconnect AC power, discharge Power Supply Capacitors C5820 and C5840 through a 10, 5W resistor to ground.DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.After repairs are completed, restore power gradually using a variac, to avoid overcurrent.

Current consumption at AC 127 V, 50/60 Hz in NO SIGNAL mode (volume min at CD mode) should be ~500mA.Current consumption at AC 240 V, 50/60 Hz in NO SIGNAL mode (volume min at CD mode) should be ~350mA.

3 Protection CircuitryThe protection circuitry may have operated if either of the following conditions are noticed:

No sound is heard when the power is turned on.

Sound stops during a performance.

The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires areshorted, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.If this occurs, follow the procedure outlines below: 1. Turn off the power. 2. Determine the cause of the problem and correct it. 3. Turn on the power once again after one minute.Note :When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.

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4 Prevention of Electro Static Discharge (ESD) toElectrostatically Sensitive (ES) Devices

Some semiconductor (solid state) devices can be damaged easily by electricity. Such components commonly are calledElectrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors andsemiconductor chip components. The following techniques should be used to help reduce the incidence of component damagecaused by electro static discharge (ESD). 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your

body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,which should be removed for potential shock reasons prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such asaluminium foil, to prevent electrostatic charge build up or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 4. Use only an anti-static solder remover device. Some solder removal devices not classified as anti-static (ESD protected) can

generate electrical charge to damage ES devices. 5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices. 6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most

replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminium foil orcomparable conductive material).

7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective materialto the chassis or circuit assembly into which the device will be installed.Caution

Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. 8. Minimize body motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing

together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient todamage an ES device).

5 Handling the Lead-free Solder5.1. About lead free solder (PbF)Distinction of PbF P.C.B.:P.C.B.s (manufactured) using lead free solder will have a PbF stamp on the P.C.B.Caution:

Pb free solder has a higher melting point than standard solder; Typically the melting point is 50 - 70F (30 - 40C) higher. Pleaseuse a high temperature soldering iron. In case of soldering iron with temperature control, please set it to 700 20F (370 10C).

Pb free solder will tend to splash when heated too high (about 1100F/600C).

When soldering or unsoldering, please completely remove all of the solder on the pins or solder area, and be sure to heat thesoldering points with the Pb free solder until it melts enough.

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SA-AK631GCP

6 Handling Precautions For Traverse DeckThe laser diode in the traverse deck (optical pickup) may break down due to potential difference caused by static electricity ofclothes or human body.So, be careful of electrostatic breakdown during repair of the traverse deck (optical pickup).

Handling of traverse deck (optical pickup) 1. Do not subject the traverse deck (optical pickup) to static electricity as it is extremely sensitive to electrical shock. 2. To prevent the breakdown of the laser diode, an antistatic shorting pin is inserted into the flexible board (FFC board). 3. Take care not to apply excessive stress to the flexible board (FFC board). When removing or connecting the short pin, finish

the job in as short time as possible. 4. Do not turn the variable resistor (laser power adjustment). It has already been adjusted.

Grounding for electrostatic breakdown prevention 1. Human body grounding

Use the anti-static wrist strap to discharge the static electricity from your body. 2. Work table grounding

Put a conductive material (sheet) or steel sheet on the area where the traverse deck (optical pickup) is place, and ground thesheet.

Caution :The static electricity of your clothes will not be grounded through the wrist strap. So, take care not to let your clothes touch thetraverse deck (optical pickup).Caution when replacing the Traverse DeckThe traverse deck has a short point shorted with solder to protect the laser diode against electrostatics breakdown. Be sure toremove the solder from the short point before making connections.

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SA-AK631GCP

7 Precaution of Laser DiodeCaution :

This product utilizes a laser diode with the unit turned "ON", invisible laser radiation is emitted from the pick up lens.Wavelength : 780 nmMaximum output radiation power from pick up : 100 W/VDELaser radiation from pick up unit is safety level, but be sure the followings: 1. Do not disassemble the optical pick up unit, since radiation from exposed laser diode is dangerous. 2. Do not adjust the variable resistor on the pick up unit. It was already adjusted. 3. Do not look at the focus lens using optical instruments. 4. Recommend not to look at pick up lens for a long time.

CAUTION!THIS PRODUCT UTILIZES A LASER.USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULTIN HAZARDOUS RADIATION EXPOSURE.

n Use of Caution Labels

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SA-AK631GCP

8 Accessories

Remote Control

FM Antenna

AC Cord

AM Loop Antenna

AC Plug Adaptor

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SA-AK631GCP

9 Operation Procedures

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SA-AK631GCP

10 Disassembly and Assembly of Main ComponentATTENTION SERVICER

Some chassis components may have sharp edges. Be careful when disassembling and servicing. 1. This section describes procedures for checking the operation of the major printed circuit boards and replacing the main

components. 2. For reassembly after operation checks or replacement, reverse the respective procedures.

Special reassembly procedures are described only when required. 3. Select items from the following index when checks or replacement are required. 4. Refer to the Parts No. on the page of Parts Location and Replacement Parts List (Section 23), if necessary.

10.1. Disassembly flow chartThe following chart is the procedure for disassembling the casing and inside parts for internal inspection when carrying out theservicing.To assemble the unit, reverse the steps shown in the chart as below.

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10.2. Gear for servicing (jig) Information 1. This unit has a gear which is used for checking items (Open/Close of disc tray, up/down operation of traverse unit by manually)

when servicing. 2. For preparation of gear (for servicing), perform the procedures as follows. 3. In case of re-servicing the same set, the gear for servicing may has been taken off because it has been used. The gear for

servicing must be stored.

Remove the gear provided with mecha cover as shown below.

Insert the hexagonal screwdriver (2mm) into the gear, and then project the tip of screwdriver for 1~ 2 mm in length.

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SA-AK631GCP

Step 1 Remove 2 screws at each side and 5 screws at rearpanel.Step 2 Lift up both sides of the top cabinet, push the topcabinet towards the rear and remove the top cabinet.

Opening the disc tray automatically (Using PowerSupply)

Step 1 Connect the AC power cord.Step 2 Press the POWER button to power up the main unit.

Step 3 Press the OPEN/CLOSE button, the disc tray will openautomatically.

Step 4 Release the 2 claws, and then remove the CD Lid.Step 5 Press the OPEN/CLOSE button, the disc tray will close.

10.3. Disassembly of Top Cabinet

10.4. Disassembly of CD Lid(The CD changer unit can be removed after the CD Lid is removed)

Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet

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Step 6 Press the POWER button to turn the power off.

[Opening the disc tray manually (Using service tools)]

Step 1 Insert the gear tool into the hole on the underside of CDchassis and then rotate in the direction of arrow. The disc traywill be opened.

Step 2 Release the 2 claws, and then remove the CD lid cover.

Step 3 Repeat Step 2 but rotate the gear tools in anti-clockwisedirection.

Step 4 The disc tray will be closed.

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Step 1 Remove 10 screws and disconnect wire CN2810 (Fan)at rear cabinet as shown.

Step 1 Remove one screw at rear panel.Step 2 Detach the FFC wires (CN2801 & CN2805).

Step 3 Release the claws of both ends, and then lift up the CDMechanism Unit.

Step 4 Remove 4 screws.Step 5 Remove the CD chassis.Step 6 Lay the CD mechanism unit as shown.

For disassembly of CD mechanism unit, please refer toSection 10.13 of this manual.

10.5. Disassembly of Rear Panel

Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet

10.6. Disassembly of CD Mechanism Unit

Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet

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Step 1 Disconnect FFC wires CN2803 & CN2806 from MainP.C.B.

Step 1 Remove the 2 screws fixed at Sub Power P.C.B..

Step 2 Lift up Main P.C.B. by disconnecting connectorsCN5800 & CN5801 as arrow shown above.

Step 2 Remove 2 screws at Power Amplifier IC.Step 3 Disconnect connector CN5803Step 4 Lift up the Sub Power P.C.B. to remove it.

10.7. Disassembly of Main P.C.B.

Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet

Follow the (Step 1) - (Step 6) of Item 10.4 - Disassembly of CD Lid

Follow the (Step 1) of Item 10.5 - Disassembly of Rear Panel

Follow the (Step 1) - (Step 3) of Item 10.6 - Disassembly of CD Mechanism Unit

10.8. Disassembly of Sub-Power P.C.B.

Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet

Follow the (Step 1) - (Step 6) of Item 10.4 - Disassembly of CD Lid

Follow the (Step 1) of Item 10.5 - Disassembly of Rear Panel

Follow the (Step 1) - (Step 3) of Item 10.6 - Disassembly of CD Mechanism Unit

Follow the (Step 1) - (Step 2) of Item 10.7 - Disassembly of Main P.C.B.

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Replacement of Power Amplifier ICStep 1 Desolder the terminals of Power Amplifier IC andreplace the component.

Step 1 Remove the 2 screws fixed at heat sink.Step 2 Remove 1 screw fixed at Power P.C.B..

Note:Insulate the Power P.C.B. with insulation material to avoid shortcircuit.

10.9. Disassembly of Power P.C.B.

Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet

Follow the (Step 1) - (Step 6) of Item 10.4 - Disassembly of CD Lid

Follow the (Step 1) of Item 10.5 - Disassembly of Rear Panel

Follow the (Step 1) - (Step 3) of Item 10.6 - Disassembly of CD Mechanism Unit

Follow the (Step 1) - (Step 2) of Item 10.7 - Disassembly of Main P.C.B.

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Step 1 Remove 2 screws fixed to the Power Amplifier IC and 1screw to Voltage Regulator.Step 2 Break the joint with a metal cutter as shown below.

Step 1 Remove 3 screws, disconnect connector CN5950.

Step 3 Unsolder the terminals of Power Amp IC, transistor andreplace the components.

Step 4 Fix back the cut portion with a screw as shown.

Replacement of the Power Amplifier IC/ Voltage Regulator

10.10. Disassembly of Transformer P.C.B. & Voltage Selector

Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet

Follow the (Step 1) - (Step 6) of Item 10.4 - Disassembly of CD Lid

Follow the (Step 1) of Item 10.5 - Disassembly of Rear Panel

Follow the (Step 1) - (Step 3) of Item 10.6 - Disassembly of CD Mechanism Unit

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SA-AK631GCP

Step 1 Lay the unit as shown below.

Step 2 Release 2 claws at bottom and 2 claws each side, drawthe front panel assy forward.

Step 1 Detach FFC wire (CN971).Step 2 Disconnect FFC flat cable from the connector(CN1001).Step 3 Remove the 5 screws.

Step 3 Remove volume knob and adaptor.

Disassembly of Panel P.C.B.

Step 4 Remove 10 screws.Step 5 Disconnect connectors (CN2806, CN2803 andCN5950).

10.11. Disassembly of Front Panel Unit

Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet

Follow the (Step 1) - (Step 6) of Item 10.4 - Disassembly of CD Lid

Follow the (Step 1) - (Step 3) of Item 10.6 - Disassembly of CD Mechanism Unit

10.12. Disassembly of Deck Mechanism Unit

Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet

Follow the (Step 1) - (Step 6) of Item 10.4 - Disassembly of CD Lid

Follow the (Step 1) - (Step 3) of Item 10.6 - Disassembly of CD Mechanism Unit

Follow the (Step 1) - (Step 3) of Item 10.11 - Disassembly of Front Panel Unit

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Step 4 Push the lever upward, and then open the cassette lidassy (For DECK1 and DECK2).

Step 1 Remove the CD changer unit.

Step 2 Insert the gear with hexagonal wrench into the hole.

Step 5 Tilt the cassette mechanism unit in the direction ofarrow (1), and then remove it in the direction of arrow (2).

For replacement of Deck Mechanism P.C.B.

Step 6 Remove 3 screws.

Step 7 Unsolder the motor terminals.

Step 8 Remove Deck Mechanism P.C.B.

Step 3 Rotate the hexagonal wrench in the direction of arrow(clockwise), and then open the disc tray fully.

10.13. CD Mechanism Main Component Replacement Procedures

Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet

Follow the (Step 1) - (Step 6) of Item 10.4 - Disassembly of CD Lid

Follow the (Step 1) - (Step 6) of Item 10.6 - Disassembly of CD Mechanism Unit

10.13.1. Replacement of the Traverse Deck

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SA-AK631GCP

Step 4 With pressing the claw (A), rotate the hexagonal wrenchclockwise. (The slide plate R moves for a little amount.)Step 5 Pressing the claw (B) in the direction of arrow (1), theconnection lever moves in the direction of arrow (2).

Step 6 Lift up the traverse deck assy.

Step 7 Remove the traverse deck assy from the timing lever.

Caution:When removing or inserting the traverse deck avoid touchingthe OPU lens and pressing onto the turntable.

Step 8 Remove 3 screws.Step 9 Unsolder the motor terminals (4 points).

Step 10 Remove the FFC board from the connector, and thenremove the CD Servo P.C.B.

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Step 11 Remove the pin.

Step 12 Release the claw, and then remove the traverse deckassy.Note:Be careful not to lose the 3 floating spring because those willalso be removed on removal of the traverse deck assy.

Installation of the CD Servo P.C.B. after replacementStep 1 Connect the FFC board.Step 2 Install the CD servo P.C.B. in the traverse deck assy.Step 3 Remove 3 screws.Step 4 Solder.

Note for installation of the CD servo P.C.B.

Installation for traverse deck assy

Step 1 Install the traverse deck assy to the timing lever.Step 2 Align the boss of traverse deck assy with the slot oftraverse cam gear.

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Step 3 Force the claw of timing lever.

Step 1 Remove 4 screws.Step 2 Remove the upper plate.

Step 3 Remove 3 screws.Step 4 With lifting the claw in the direction of (1), draw the CDDetect P.C.B. in the direction of arrow (2).

Step 4 Force the disc tray fully.

Step 5 With pressing the claw (B) in the direction of arrow (1),force the connection lever in the direction of arrow (2).

Step 5 Remove the mechanism cover.

10.13.2. Replacement for the Disc Tray

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SA-AK631GCP

Step 6 Insert the gear with hexagonal wrench into the hole.

Step 7 Rotate the hexagonal wrench in the direction of arrow,and then open the disc tray fully.

Step 8 Release the both claws, and then draw the disc tray.

Step 9 With forcing the left guide bar manually because the leftguide bar interfers with claw, draw the disc tray.[Installation of the disc tray after replacement]

Step 1 Slide the drive rack fully in the direction of arrow.

Step 2 Holding the drive rack not to move, install the disc tray.Step 3 Align the drive rack with the drive gear.

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SA-AK631GCP

Step 1 Remove 3 screws.

Step 2 Release the claw, and then remove the gear holder.Step 3 Remove the belt and change gear spring.

NOTE:Take care not to lose the change gear spring.Step 4 Remove the pulley gear, change gear and UP/DOWNgear.

NOTE:Force the right guide bar of tray base manually not to moveupwards.

Step 4 Holding the disc tray manually, push the disc tray in thedirection of the arrow.

Step 5 Release the 2 claws, and then remove the bottom SWP.C.B..

10.13.3. Disassembly and reassembly for mechanism base drive unit

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SA-AK631GCP

Step 6 Install the tray lock spring to hook temporary.Step 7 Release the claw, and then remove the tray lock.Step 8 Release the claw, and then remove the rear lock.

Step 9 Pressing the claw (B) in the direction of arrow (1), forcethe connection lever in the direction of arrow (2).

Step 10 Move the slide plate 1 to the end of stock side.

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SA-AK631GCP

Step 11 Lift up the left end of spindle base unit in the directionof arrow (1), and then remove the unit in the direction of arrow(2).

Step 12 Remove slide plate 1 and slide plate 2.

Step 13 Remove the traverse relay gear, traverse cam gearand drive gear.

[Dissassembly/reassembly for the spindle base unit]Step 1 Draw the 5 disc spacers.

Step 2 Pushing the claw, slide the support plate in the directionof arrow, and then remove it.

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SA-AK631GCP

Step 3 Rotate the disc lever in the direction of arrow (1), drawthe disc lever.

NOTE:Take care not to lose the disc lever spring.

Step 4 Release the 2 claws, and then draw the relay gear B.Step 5 Release the 2 claws as shown below.

NOTE:Hold the loading stopper assy manually bacause it is flipped byspring.

Step 6 Remove the cushion spring.Step 7 Remove the loading stopper assy in the direction ofarrow.

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Step 8 Release the 2 claws, and then remove the relay gear A.Step 9 Release the 2 claws, and then remove the spindle shaft.

Step 10 Remove the lower spindle spring with tweezers.Step 11 Force the lower hook with thin tip of minus screwdriver.

Step 12 Squeeze the shaft of lower hook, and then draw it.

Step 13 Rotate the lower spindle in the direction of arrow untilthe lower spindle interferes with stopper.Step 14 Insert the thin tip of minus screwdriver between thelower spindle and UP/DOWN base, and then slacken the lowerspindle to release the stopper. Then, rotate the lower spindleand remove it.

Step 15 Rotate the UP/DOWN base at a 90 angle. Then,

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spread the hold bars of loading stopper and remove theUP/DOWN base.[Installation for loading stopper assy]Step 1 Align the claw of loading stoppers assy with the slot ofspindle base. (Caution should be exercised when alignment ofclaw due to the size of claws.)

Step 2 Lower the loading stopper assy, and then align thelower spindle with the trapezoid tooth of relay gear A.

Step 3 Force the loading stopper assy, latch the claw firmly.

[Reassembly for mechanism base drive unit]

Step 1 Install the traverse cam gear.Step 2 Rotate the traverse cam gear to the direction of arrow.

Step 3 Install the drive gear and traverse relay gear.

*When installing the traverse relay gear, align the trapezoidtooth of gear with tooth of traverse cam gear.

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Step 4 Install the slide plate 2 to the mechanism base, andthen match to the connection lever.Step 5 Install the slide plate 1 to the mechanism base, andthen match to the connection leve and align the trapezoid toothof traverse relay gear with the slide plate 1.

Step 6 Install the spindle base unit. (First, slide plate 1.)

Step 7 Move the slide plate 1 to forward fully.Step 8 Install the rear lock. (The claw should be latched.)Step 9 Install the Spindle Position P.C.B.. (The claw should belatched.)Step 10 Install the tray lock. (The claw should be latched.)

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Step 11 Remove the tray lock spring from hook,and then latchto the tray lock.Step 12 Install the UP/DOWN gear, change gear, change gearspring, pulley gear and belt in the order of (1) - (5).

Step 13 Install the gear holder, and then tighten the screw (a).

Step 14 Install the tray base, traverse assy, mechanism coverand upper plate.[Operation check after servicing]Check the proper operation of following items with gear andhexagonal screwdriver. 1. Open/close of tray base. 2. Moving the tray base to the stock side. 3. UP/DOWN operation of spindle base unit. 4. UP/DOWN operation of traverse assy.

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Step 1 Install the belt temporarily.NOTE:Take care not apply the grease to the belt.Step 2 Upset the CD loading unit.Step 3 Remove 3 screws.

Step 4 Unsolder the plunger terminals (2 points).Step 5 Unsolder the motor terminals (2 points).

Step 6 Release the 2 claws (A), and then remove the Motor

P.C.B.Step 7 Release the claw (B), and then remove the motor assy.[Notice for motor assy installation] 1. Locate the name plate of motor to the traverse assy. 2. Align the hole of motor with the ribs.

10.13.4. Replacement for the motor assy

33

SA-AK631GCP

* The mechanism as shown below is for DECK1. For DECK2, perform the same procedures.

Step 1 Release the 2 claws, and then remove the pinch roller(R), (F).Step 2 Release the 2 claws, and then remove the headconnector.

Step 3 Remove 2 screws.

10.14. Replacement for the pinch roller assy and head block

Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet

Follow the (Step 1) - (Step 6) of Item 10.4 - Disassembly of CD Lid

Follow the (Step 1) - (Step 3) of Item 10.6 - Disassembly of CD Mechanism Unit

Follow the (Step 1) - (Step 3) of Item 10.11 - Disassembly of Front Panel Unit

Follow the (Step 1) - (Step 5) of Item 10.12 - Disassembly of Deck Mechanism Unit

34

SA-AK631GCP

Step 1 Release the 2 claws, and then remove the headconnector.Step 2 De-solder plunger point.Step 3 Remove the Deck Mechanism P.C.B.

Step 4 Remove 3 screws.

Step 5 Remove the flywheel R.Step 6 Release the claw of tape side, and then remove thewinding lever and spring.Step 7 Remove the flywheel F.[Installation of the belt]Step 1 The boss and marking should be positionedhorizontally.

10.15. Replacement for the Deck motor assy, capstan belt A, capstan belt Band winding belt

Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet

Follow the (Step 1) - (Step 6) of Item 10.4 - Disassembly of CD Lid

Follow the (Step 1) - (Step 3) of Item 10.6 - Disassembly of CD Mechanism Unit

Follow the (Step 1) - (Step 3) of Item 10.11 - Disassembly of Front Panel Unit

Follow the (Step 1) - (Step 5) of Item 10.12 - Disassembly of Deck Mechanism Unit

35

SA-AK631GCP

Step 2 Put the winding belt on the pulley temporarily.Step 3 Install the flywheel F.Step 4 Put the winding belt on the flywheel F.Step 5 Install the winding lever and spring while pressing thewinding arm in the direction of arrow.Step 6 Install the flywheel R.

Step 7 Put the capstan belt A temporarily as shown below.

Step 8 Put the capstan belt B on the motor assy pulley.Step 9 Install the sub chassis to the mechanism, and thentighten screws.

36

SA-AK631GCP

Step 10 Remove 3 screws.Step 11 Put the capstan belt B as shown below.

Step 12 Put the capstan belt A on the motor assy pulley.

37

SA-AK631GCP

Step 1 Lift up the lever upward, open the cassette lid assy.(For DECK1 and DECK2)

Step 2 Push up the cassette lid assy in the direction of arrow.(For DECK1 and DECK2).

10.16. Replacement for the cassette lid assy

Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet

38

SA-AK631GCP

Step 1 If a cassette tape cannot be removed from the deck (thetape is caught by the capstan or pinch roller during playback orrecording), rotate the flywheel F in the direction of the arrow toremove it.

Step 2 Push the lever upward and open the cassette lid assy.Remove the cassette tape.

10.17. Rectification for tape jam problem

Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet

39

SA-AK631GCP

11 Checking for major P.C.BsNote:

Checking of all major P.C.Bs (Main P.C.B., Panel P.C.B., Transformer P.C.B., Deck P.C.B., Deck Mechanism P.C.B., Sub-Power P.C.B. and Power P.C.B.) can be carried out using below procedures.For the disassembling procedures, refer to Section 10.

11.1. Checking of Main P.C.B. 1. Remove Top Cabinet and Rear Panel. 2. Remove CD Lid. 3. Disassemble CD Mechanism Unit. 4. Connect FFC wires (CN2801 & CN2805) from CD Mechanism Unit.

40

SA-AK631GCP

11.2. Checking of Transformer P.C.B. 1. Remove Top Cabinet and Rear Panel. 2. Remove CD Lid. 3. Disassemble CD Mechanism Unit. 4. Connect FFC wires (CN2801 & CN2805) from CD Mechanism Unit.

41

SA-AK631GCP

11.3. Checking of Panel, Deck & Deck Mechanism P.C.B. 1. Remove Top Cabinet. 2. Remove CD Lid. 3. Disassemble CD Mechanism Unit. 4. Remove volume knob at Front Panel Unit. 5. Disassemble Panel P.C.B. 6. Disassemble Deck Mechanism Unit. 7. Use the extension cable (A) to reconnect (CN1001) Deck P.C.B. and (CN2803) Main P.C.B. 8. Use the extension cable (B) to reconnect (CP6401) Panel P.C.B. and (CN971) Deck Mechanism P.C.B.

Service ToolsExtension FFC(A) Deck P.C.B. - Main P.C.B. REEX0485 (14 Pins)(B) Panel P.C.B. - Deck Mechanism P.C.B. REEX0484 (10 Pins)

42

SA-AK631GCP

11.4. Checking of Power P.C.B. 1. Remove Top Cabinet and Rear Panel. 2. Remove CD Lid. 3. Disassemble CD Mechanism Unit. 4. Remove 3 screws at Transformer P.C.B.. 5. Remove 2 screws at heat sink and 1 screw at Power P.C.B. 6. Flip the Power P.C.B. 7. Insulate the Power P.C.B. with insulation material to avoid short circuit. 8. Use the extension cable (A) to reconnect (CN1001) Deck P.C.B. and (CN2803) Main P.C.B. 9. Use the extension cable (B) to reconnect (CP6401) Panel P.C.B. and (CN971) Deck Mechanism P.C.B. 10. Use the extension cable (C) to reconnect (H5950/W5950) Power P.C.B. and (CN5950) Transformer P.C.B.

Service ToolsExtension FFC(A) Deck P.C.B. - Main P.C.B. REEX0485 (14 Pins)(B) Panel P.C.B. - Deck Mechanism P.C.B. REEX0484 (10 Pins)(C) Power P.C.B. - Transformer P.C.B. RFKAK330 (9 Pins)

43

SA-AK631GCP

12 Self-Diagnostic Function12.1. Self-diagnostic displayThis unit is equipped with a self-diagnostic display function which, will display an error code corresponding to the problem occuring.Use this function when performing checking maintenance on the unit.

12.2. How to enter the Self-Diagnostic Function

12.3. Cassette Mechanism Test (For error code H01, H02, H03, F01) 1. Press TAPE, DECK 1/2 to select Deck 2. 2. Load a cassette tape with the erasure prevention tab, remove from left side only and close the cassette holder. 3. Press FAST FORWARD MEMORY (Tape will be stop after 2 seconds) 4. Load a cassette tape with the erasure prevention tab, remove from right side only and close the cassette holder. 5. Press REVERSE FM MODE/BP (Tape will be stop after 2 seconds) 6. Load a pre-recorded tape with both side record tabs intact and close the cassette holder. 7. Press PLAY/TUNE/TIME ADJ UP (After TPS function, tape will stop automatically) 8. Press REC/STOP (Tape will not move) 9. Press STOP/TUNE MODE to indicate Error code.

If several problem exist, error code will change each time when n /STOP is pressed.

(e.g. H01 H03 F01 .....etc.) 10. Press TAPE, DECK 1/2 to select Deck 1. 11. Repeat step 2 to 9 to test Deck 1. (Tape Deck 1 will not check H02 because of no recording function)

12.4. CD Mechanism Test (F15, F26, F16, F17, F27, F28, F29, F30, H15 &H16)

1. Press (set to CD Mode) on main unit. 2. Press CD DIRECT PLAY (1) and button on main unit.

44

SA-AK631GCP

3. Press to close the tray. 4. Press CD DIRECT PLAY (5) and wait until the tray is open. 5. Press and remove the CD. 6. Press to close the tray. 7. Press n/STOP to indicate Error Code.

If several problem exist, error code will change each time when n/STOP is pressed. (e.g. F15 F26 F16 ....etc).

12.5. To clear all Error code 1. Press and hold button for 5 seconds. 2. FL indicator shows CLEAR for 1 second and change to T.

12.6. To exit from Self-Diagnostic function 1. Press button on main unit or remote control.

12.7. Power Amplifier Failure (F61) 1. When power amplifier fail, F61 will indicate automatically.

12.8. Description of Error Code12.8.1. Abnormality detection for Deck Mechanism block

No. Abnormal Items Error Display Method of Detection1 MODE SW abnormal H01 Normal operation during mecha transition, MODE SW abnormal is

memorized. The content of abnormality can be confirmed in theabnormal detection mode explained in the later section.

2 REC INH SW abnormal H02 The content of abnormality can be confirmed in the abnormal detectionmode explained in the later section.

3 HALF SW abnormal H03 The content of abnormality can be confirmed in the abnormal detectionmode explained in the later section.

4 Reel pulse abnormal F01 The content of abnormality can be confirmed in the abnormal detectionmode explained in the later section.

12.8.2. Abnormality detection for CD/Changer blockNo. Abnormal Items Error Display Method of Detection1 REST SW abnormal F15 Under normal operation (Self-Diagnostic Mode inclusive), this error

occurs when the REST SW ON is not detected within the specified timeand shall be memorized.

2 Transmission error between CD servoLSI and micon

F26 Under normal operation (Self-Diagnostic Mode inclusive), this error occurswhen the selection is set to CD and SENSE=H is detected andSENSE=L is not detected within a fail safe time (20ms) after systemcommand transmission was sent.

3 CLAMP SW abnormal F16 Refer to section 12.8.4 (Mechanism Error Code Table) [M-0A] error isdetected.

4 BOTTOM SW abnormal F17 Refer to section 12.8.4 (Mechanism Error Code Table) [M-09] error isdetected.

5 POSITION SW abnormal F27 Refer to section 12.8.4 (Mechanism Error Code Table) [M-05 ~ M-08] erroris detected.

6 SW1 abnormal F28 Refer to section 12.8.4 (Mechanism Error Code Table) [M-02 ~ M-08] erroris detected.

7 SW2 abnormal F29 Refer to section 12.8.4 (Mechanism Error Code Table) [M-02 ~ M-08] erroris detected.

8 OPEN SW abnormal H15 Refer to section 12.8.4 (Mechanism Error Code Table) [M-01] error isdetected.

9 CLOSE SW abnormal H16 Refer to section 12.8.4 (Mechanism Error Code Table) [M-01] error isdetected.

10 DISC SENSOR F30 Refer to section 12.8.4 (Mechanism Error Code Table) [M-01] error isdetected.

45

SA-AK631GCP

12.8.3. Power supply related error detectionNo. Abnormal Items Error Display Method of Detection1 POWER AMP output abnormal F61 During normal operation, if DCDET becomes L, normal POWER OFF

process shall not be executed, PCNT shall be switched to Limmediately. GOODBYE shall not be displayed and the error display F61will be displayed instead.2 seconds after the F61 display, ECONO shall be set to L and FLdisplay shall be turned off.The error content shall be memorized when the abnormality occurs andcan be displayed in the C-mecha self-diagnostic mode described later.

12.8.4. Error Code (CR20 Mechansim) 1. If mechanism problem occurs during normal or aging mode, the error code is remembered and shown on the FL display. 2. Reset Condition of Error Code

a. During cold start of micro-processor IC. b. Restart of aging mode for the mechanism unit.

3. Mechanism Error CodeMechansim Error Code Table

Error Code DescriptionM-00 No ErrorM-01 OPEN Position - Horizontal Motion Abnormality at play positionM-02 PLAY Position - Horizontal Motion Abnormality at stock positionM-03 PLAY Position - Horizontal Motion Abnormality during changing

positionM-04 CHANGE Position - Horizontal Error of Stock positionM-05 CHANGE Position - Ascending motion ErrorM-06 CHANGE Position - Descending motion ErrorM-07 STOCK Position - Ascending motion ErrorM-08 STOCK Position - Descending motion ErrorM-09 Abnormality during change position (bottom switch)M-0A Clamp ErrorM-0B Access Failure - Access Time of more tha 30 secs (Total time

of automatic Read TOC Track access)

4. When the mechanism unit stops due to error during aging model, error code is remembered and counts of the errors aredisplayed on the FL display.

46

SA-AK631GCP

13 CD Test Mode FunctionThis CD test mode is provided to check CD unit without connecting to changer loading mechanism. This mode shall operate CDPLAY with CD unit being connected only and CD Automatic Alignment result is shown on FL display.

13.1. How to set CD test mode

13.2. CD Automatically Adjustment result indicationUnder CD test mode, pressing the numeric key 0 on the remote controller will display the auto adjustment result. FLOCK, TLOCKand CLVS status shall be shown as below:

During the above display, executing CD PLAY will display auto adjustment result for CD PLAY mode.

13.3. CD Mecha Aging Test Mode (CR20) 1. Functional summary of CD aging test mode

It is for the purpose to determine the reliability of the CD changer. 2. To enter into CD aging test mode

a) First, enter into self-diagnostic mode (Refer to Section 12.2. How to enter the Self-Diagnostic Function)b) In the self-diagnostic mode, switch the SELECTOR to and press . It will enter into CD aging test mode.When in CD aging test mode, the following operation will begin and repeated:1. [DISC STOCKER] DISC LOAD TRAY OPEN (2 secs) TRAY CLOSE] as one count.2. DISC 1 DISC 2 DISC 3 DISC 4 DISC 5 DISC 1........repeating this endlessly.

While performing the above operation, the FL display will show the number of its operations starting from 00001. Withreference to figure as below.

47

SA-AK631GCP

It shall move up one counter when the above operations ends. The counter will reset to 00000 when 99999 is reached.

To exit CD aging test mode, press button, the tray will return to its PLAY position and power will be off.

13.4. Micon ROM Checksum and Version Display Mode 1. Functional Summary

Display version number and calculated checksum of the micon software. 2. To enter into Micon ROM checksum and Version Display Mode.

a. Enter into Self-Diagnostic Mode (Refer to Section 12.2). b. In the Self-Diagnostic Mode, Press twice.

The version number and the calculated ROM Checksum of the current software will be displayed on the FL as shown in thisexample:

* Note: The Software Version No. & Micon Software Checksum differs from set to set.

The ROM Checksum is calculated on demand, not hard coded.

The ROM Checksum is calculated by talking the arithmetic SUM of the ROM contents from the programs STARTaddress until the END address.

START address = [1080]HEND address = [FFFD]H

48

SA-AK631GCP

14.1. Cassette Deck Section

Measurement Condition

Make sure head, capstan and press roller are clean.

Judgeable room temperature 20 5 C (68 9F)

Measuring instrument

EVM (DC Electronic voltmeter)

Digital frequency counter

Test Tape

Tape speed gain adjustment (3 kHz, -10 dB);QZZCWAT

14.1.1. Tape Speed Adjustment (Deck 1/2) 1. Set the tape edit button to NORMAL position. 2. Insert the test tape (QZZCWAT) to DECK 2 and playback

(FWD side) the middle portion of it. 3. Adjust Motor VR (DECK 2) for the output value shown

below.

Adjustment target: 2940 ~ 3060 Hz (NORMAL speed)

4. After alignment, assure that the output frequency of theDECK 1 FWD are within 60 Hz of the value of the outputfrequency of DECK 2 FWD.

Fig.1

14.1.2. Bias and Erase Voltage Check 1. Set the unit AUX position. 2. Insert the Normal blank tape (QZZCRA) into DECK 2 and

the unit to REC mode (use l REC/STOP key). 3. Measure and make sure that the output is within the

1. Connect the instrument as shown in Fig.5. 2. Set the unit to AM mode. 3. Apply signal as shown in Fig. 5 from AM-SG. 4. Adjust Z2602 so that the output frequency is maximized in

Fig. 6.

standard value.

Bias voltage for Deck 2 144mV (Normal)Erase voltage for Deck 2 80mV (Normal)

Fig.2

Fig.3

14.1.3. Bias Frequency Adjustment (Deck1/2)

1. Set the unit to AUX position. 2. Insert the Normal blank tape (QZZCRA) into DECK 2 and

set the unit to REC mode (l use REC/STOP key). 3. Adjust L1002 so that the output frequency is within the

standard value.

Standard Value: 97 8 kHz

Fig.4

Fig.5

14 Measurements and Adjustments

14.2. Tuner Section14.2.1. AM-IF Alignment

49

SA-AK631GCP

Fig.6

14.2.2. AM RF Adjustment 1. Connect the instrument as shown in Fig. 7. 2. Set the unit to AM mode. 3. Set AM-SG to 520kHz. 4. Receive 520kHz in the unit. 5. Adjust Z2602 (OSC) so that the EVM-AC is maximized. 6. Set AM-SG to 600Hz. 7. Receive 600Hz in the unit. 8. Adjust Z2602 (ANT) so that the EVM-SG is maximized.

14.3.1. Cassette Deck Section

14.3.2. Tuner Section

9. Set AM-SG to 520kHz. 10. Receive 520kHz in the unit. 11. Adjust L2602 (OSC) so that the EVM-DC value is with

1.10.5V.

Fig.7

14.3. Alignment Points

50

SA-AK631GCP

15 Block Diagram

T-

T+

F+

F-

PHOTO DETECTOR

OPTICAL PICKUP

SEMICONDUCTORLASER

Q7601

LASERPOWER DRIVE

M7302SPINDLEMOTOR

RESETSIGNAL

GENERATOR

FOCUSCOIL

DRIVE

TRACKINGCOIL

DRIVE

TRAVERSEMOTORDRIVE

SPINDLEMOTORDRIVE

MUTE[CH2]

FOCUS COIL

TRACKING COIL

D4+17

D4-16

D3+15

D3-14

D1+11

D1-10

D2+13

D2-12

4PC2

3IN2

6IN1

24IN3

23IN4

1/RST

NC18

5NC

2NC

B

B

B

BIC7003

AN8739SBTE2FOCUS COIL/TRACKING COIL/TRAVERSE MOTOR/SPINDLE MOTOR DRIVE

M7301TRAVERSE

MOTOR

E

F

B

A

LPD

LD

C

D

SPPOL

SPOUT

TRVP

TRP

FOP

B

B

A

B

F

E

M

M

51

SA-AK631GCP

MN6627953HBSERVO PROCESSORDIGITAL SIGNALPROCESSOR/DIGITAL FILTER/D/A CONVERTER

TO MAIN BLOCK

IC7002

NTEST60

IOMODE59

NRST68TIMING GENERATOR

71

X1

70X2

(SM

CK)

(PM

CK)

MICRO COMPUTERINTERFACE

66

STAT

65

MLD

63

MC

LK

64

MD

ATA

DSL/PLL/VCO

44

ARFI

N

46

IREF

45

DSL

F

47

PLLF

48

PLLF

0

SUBCODEINTERFACE

43

AVSS

2

49

AVD

D2

67BLKCK

74TXTD

73DQSY

(SBCK)

(SUBC)

(TXNCLDCK)

62FLAG

1EXT0

EFM DEMODULATIONSYNC INTERPOLATION

CIRC ECCCDROM ECC

CIRC RAM

1 MBITSRAMBUS CONTROL UNIT

SPINDLESERVO

SERVOCPU

RFINTERFACE

RFAMPLIFIER

INPUTPORT

RFVDD37

VREF27

A,B,C,D,E,F30~35A, B, C, D, E, F

CEA21

LD29LD

PD28LPD

DCDET36

CAGC412EXT1

3EXT2

76GIO0

77GIO1

78GIO2

75TXTCK

PORT

ARF

RFOUT39

RFIN40

FEN24

TEN25

FEOUT23

TEOUT26

(LRCK)(BCLK)

(SRDATA)SERIAL OUTPUT

INTERFACE

REGULATORLON

(DVDD2)

MP3/WMADECODER

FSCONVERTER

DIGITAL FILTER1 BIT DAC

PWM LOGIC

ANALOGLOWPASS FILTER

RFENV22

A/DCONVERTER

ADPVCC18

FEIN20

TEIN19

RFENV22

OUTPUTPORT

PWMSEL4

SPPOL6SPPOL

SPOUT5SPOUT

TRVP7TRVP

TRVM8TRVP29TRVM210

TRP11TRP

TRM12

FOP13FOP

FOM14

IOVD

D1~

3

15, 56,72

DVD

D1,

2

16, 57

DVS

S1~3

17, 55,69

DIGITALOUT

TX

61

OU

TL

50

OU

TR

54

AVD

D1

53

AVSS

1

51

(LR

CKI

N)

(BC

LKIN

)

(SR

DAT

IN)

CD_RST

STAT

MLD

MC

LK

MD

ATA

BLKC

K

CD SIGNAL

RCH

A

B

B

B

B

B

B

B

FILTER

B

B

B

B

B

B

X7201

52

SA-AK631GCP

IC2601LA1833NMNTLMFM/AM IF AMP,DET/AM OSC,MIX/FM MPX

SD ST

SHIFT REGISTER LATCH

12

SWALLOW COUNTER1/6,1/17,4 BITS

12 BITS PROGRAMMABLEDIVIDER

REFERENCEDIVIDER

C2BI/F

PLLCLK

PLLDA

ST/DO

CE

X260

3

ST/DO

SD

S-CURVE

REG

FMIF FM

DET

AMOSC

LEVELDET

BUFFER

ALC DECODER

STEREOSWITCH

AMDET

AMIF

TUNINGDRIVE

AM/FMIF

BUFFER COMP

FF FF

VCO

AMMIX

AMRM AMP

AGCPHASE

DET

PILOTDETFF

PILOTCANCEL

(FM)

TUNER15V

SUPPLYSWITCH

Q2606

POWER ONRESET

UNIVERSALCOUNTER

UNLOCKDETECTOR

PHASE DETECTORCHARGE PUMP

TOCD DRIVE

BLOCK

LC72131MDTRMPLL FREQUENCY SYNTHESIZER

IC2602

X2602

16

17

18

11

15

19 10 7 6 9 8

4CL

3DI

2CE

5DO

13

12

14

20

1

L2602D2602L2601

2324 22 21 20 19 18 17 16 1415 13

1 2 3 4 65 7 8 9 10 11 12

FMIF AMP

Q2601

REG

B

B

B

B

B

RCH

A

B

CF2601 CF2602

B

FM ANT

Z2620

8

(FM)

MIXER

OSC BUFFER

Q1 (RF AMP)

6

5

1 7Q2

Q3 Q4

AMIFT

Z2602

AM ANT

53

SA-AK631GCP

MOTOR DRIVEC0GAM0000005IC1

REG

MLD

MCLK

CE

MDATA

SD

CD_RST

SWITCH

BLKCK

PLLCLK

ST/DO

PLLDA

Q2906

STAT

Q2907

RM1

SWITCH

C0HBB0000039FL DRIVER

IC6601

S7201

SW5LOCK

SW4CD

SW2 PUSH

POWERSUPPLY

CONTROL

Q1

Q2937

Q2936

CD MOTORSUPPLYSWITCH

PLUNGERMOTORSUPPLY

CONTROLSWITCH

/RES

ET

5

71

FL_R

ESET

/CS

6

72

FL_C

S

74

FL_C

LKSC

K

7

SDAT

A

8

73

FL_D

OU

T

XIN

13

XO

UT

12

RM

T

18

MLD79

MDATA80

MCLK81

22

SD

77 21

ST/D

O

78

STAT

US

84

CH

G_C

W

85

CH

G_C

CW

88

CH

G_P

LR

83

CH

G_H

LF

89

CH

G_A

D2

90

CH

G_A

D1

86

CH

G_S

W1

87

CH

G_S

W2

PLLCE3

30

PLLC

K

29

PLLD

A

X_IN

15

X_O

UT

13

V_JO

G_A

67

V_JO

G_B

68

/RES

TSW

82

IN15

IN26

VREF

4

VCC

7

GN

D

1

10OUT2

2OUT1

8VS

D2

X2802

XC_I

N

10

XC_O

UT

11

X2801

19

BLKC

K

P1

50~84

P35

G1

7~14, 30~37

G16

D15S3

4

FL6601FL DISPLAY

SW1 PUSH

SW3 OPEN

B

B

B

B

B

CD

_RST

REMOTE SENSORZ6481

D1

JOG VOLVR6491

FROM POWERTRANSFORMER

1~4,53~64

16~23,25~51

S0 D0

IC2801C2CBJG000561 MICROPROCESSOR

M

54

SA-AK631GCP

AN7348S-E1P.B EQ/REC AMP/ALC/TPS AMP

IC1001

C1AA00000612R/P SELECT

IC1004

IC971CNB13030R2AUPHOTOINTERRUPTER

Q1003

SWITCHING(BEAT PROOF/

RECH)

L1002

BIAS OSCCONTROL

Q1004, Q1005,Q1007

NOR/CrO &HI/LO LOGIC

LOGICREC/PB

RIPPLEREJECTION

LOGIC L/H

ALC

Q2978

Q6415, Q6425

D951

Q6457

LEDDRIVE

SWITCH

PLUNGERSUPPLY SWITCH/PLUNGER:ON/OFF

SWITCH

PLUNGERSUPPLY SWITCH/PLUNGER:ON/OFF

SWITCH

SSEQ

_LED

76

D6457

95

PHO

TO_2

IC951CNB13030R2AUPHOTOINTERRUPTER

97

PHO

TO_1

56

PLG

1

Q6411, Q6421

57

PLG

2

60

DEC

K1_H

10

16

14

13

11

6

19

15

12

21(4)

22(3)

17(8)

1(2)

24(23)

18(7)

9

3

5

2

4

59

REC

Q2980

DECKMOTORSWITCH

58

MTR

20(5)

M1002

S951

M

OD

E

52

HAL

F_1

53

MO

DE_

1

S952

HAL

F

Z971INTERFACE

91

DEC

K2

S972

H

ALF

S975

R

ECIN

H_F

S971

M

OD

E

D971

(DECK 2)R/P HEAD

LCH

Q6456

LEDDRIVE

SW_L

ED

54

D6456

MIC

SW

Q6501, Q6502

MICAMP

JK6501MIC

S974

R

ECIN

H_R

B

B

B

Q1017

MOTORSWITCH

M

(DECK 2)ERASE HEAD

(DECK 1)P.B. HEAD

LCH

B

IC2801C2CBJG000561 MICROPROCESSOR

55

SA-AK631GCP

IC2803C1BB00000732AUDIO SOUNDPROCESSOR

JK2801AUX

S6101~S6110,S6201~S6210, S6301~S6310

Q2511,Q2512

HPF FREQAMP

SWITCH

Q2181 (Q2281)

HP_L(R)

SWITCH

MUTINGCONTROL

Q2501

Q2142 (Q2242)

SI

18

SC

17

26

ASP_

DAT

27

ASP_

CLK

47

DC

DET

A1(2)5(6)

B1(2)7(8)

SEL1(2)2(4)

REC1(2)32(31)

E1(2)13(14)

C1(2)9(10)

22(21)OUT1(2)

BD2332

20SYNC

46PCONT/EFP_/CE

KEY3

92 ~ 94

KEY1

/RES

ET/E

FP_R

ESET

12

B

D2811

40

MU

TE_A

39MUTE_H

IC2804C0AABA000009DUAL OP-AMP

AGCCONTROL

Q2571

MUTINGSWITCH

23

HAR

MO

NIC

_SW

7

13

5

6

2

IC2806C0ABBB000244DUAL OP-AMP

IC2805C0ABBB000244DUAL OP-AMP

1

75

3

2

6

D2813

SWITCH

Q2902D2901

Q2901

1(2)

LM_L

(R)

SWITCHC3EBDG000052E-EPROM(NOT SUPPLIED)

IC2802

5 4 3

43

EE_D

AT

42

EE_C

LK

41

EE_C

S

6

SW_L

V1

24

SW_L

V1

SW_L

V2

25

SW_L

V2

IC2808C0ABBB000244DUAL OP-AMP

Q2806

POWERRESET

CONTROLSWITCH

Q2701,Q2704~Q2706

FANMOTORDRIVE

M

CD SIGNAL

2(6)1(7)

3(5)

FILTER

B

B

B

B

FILTER

7(1)5(3)

6(2)

IC2801C2CBJG000561 MICROPROCESSOR

56

SA-AK631GCP

SYNC

DC_DET

FAN

MUTE_H

SW_LV1SWITCH

Q2551SUBWOOFER

LEVELCONTROL

Q2553

SW_LV2SWITCH

Q2552SUBWOOFER

LEVELCONTROL

Q2554

C0ABBB000244DUAL OP-AMP

IC2810

SUBW

HP_SW

FILTER

1

75

3

2

6

57

SA-AK631GCP

E5800

RSN315H42C-PPOWER HIC

IC5801

Q5812, Q5813

T5950

SYNC

DC_DET

HP _SW

JK6551HEADPHONE

DC DETECTSWITCH

VOLTAGEREGULATOR

(-VP)

D5959Q5951

POW

ER T

RAN

SFO

RM

ER

T5951

POWERSWITCH

CONTROL

F1

Q5953

10V VOLTAGEREGULATOR

VOLTAGE SUPPLY/CURRENT CONTROL

SWITCH

15V VOLTAGEREGULATOR

5V VOLTAGEREGULATOR

CURRENT STABILISER/LIMIT SWITCH/

10V VOLTAGE REGULATOR

Q5952

D5961~D5964Q5950

SYSTEM 6VVOLTAGE

REGULATOR

HIGH CH(6 W)

JK5950AC INLET

LOW CH(6 W)

FP5951

FP5950

FP5833

SUB

TRAN

SFO

RM

ERD5954~D5957Q5804, Q5806, Q5807Q5808

MUTE_H

FAN

Q5802, Q5805

Q5803

Q5801

IN GND14

OUT GND11

10-VCCM

Q5814

HEADPHONEMUTINGSWITCHD5813

18-VD

5(1)-VCC 1(2)

17+VD

4(2)+VCC 1(2)

B

7(9)OUT 1 1(2)

3(6)OUT 2 1(2)

-IN1 1(2)13(12)

-IN2 1(2)16(15)

SYNCHRONISINGSWITCH

D5814

JK5851(JK5852)

Z5950

RSN35H2B-PPOWER HIC

IC5002

AC DET6

-VCCM8

LATCH5

OU

T_L(

R)

4(1)

-IN_L

(R)

10(14)

8AC DET

D5950~D5953,D5970~D5973

SUBW

: MAIN SIGNAL LINE

: FM OSC SIGNAL LINE

: FM SIGNAL LINE

: CD SIGNAL LINE

: AM OSC SIGNAL LINE

: AUX SIGNAL LINE

: AM SIGNAL LINE

: FM/AM SIGNAL LINE

: CD-DA (AUDIO/VIDEO) SIGNAL LINE

: PLAYBACK SIGNAL LINE

: RECORD SIGNAL LINE

B

B

B

B

RL5950

FILTER

FILTER

RCH

TOFL DISPLAY

LCH

LCH

SIGNAL LINES

( ) Indicates the Pin No. of Right Channel. NOTE : Signal Lines are applicable to the Left Channel only.

FILTER

FILTER

S5950

VOLTAGESELECTOR

F3

58

SA-AK631GCP

16 Voltage Measurement

59

SA-AK631GCP

60

SA-AK631GCP

(All schematic diagrams may be modified at any time with thedevelopment of the new technology)Note:SW1 : Push switchSW2 : Push switchSW3 : Open switchSW4 : CD switchSW5 : Load switchS951 : Mode switchS952 : Half switchS971 : Mode switchS972 : Half switchS974 : Recinh_R switchS975 : Recinh_F switchS5950 : AC Voltage Selector switchS6101 : Open/ Close switchS6102 : CD 1 switchS6103 : CD 2 switchS6104 : CD 3 switchS6105 : CD 4 switchS6106 : CD 5 switchS6107 : Left switchS6108 : Down switchS6109 : Right switchS6110 : Up switchS6201 : Rew switchS6202 : Tuner switchS6203 : CD switchS6204 : FF switchS6205 : Stop switchS6206 : Deck 1/2 switchS6207 : Deck 2 switchS6208 : TAPE switchS6209 : AUX switchS6210 : Deck 1 switchS6301 : Power switchS6303 : H.BASS switchS6304 : REC switchS6305 : Demo/Display switchS6306 : Sub-woofer switchS6307 : Delete switchS6308 : Marker switchS6309 : Title Search switchS6310 : Enter switchS7201 : Rest switchVR6491 : VR Volume JogVR6511 : VR Mic Volume

The voltage value and waveforms are the reference voltageof this unit measured by DC electronic voltmeter (highimpedance) and oscilloscope on the basis of chassis.Accordingly, there may arise some error in voltage valuesand waveformsdepending upon the internal impedance ofthe tester or the measuring unit.

Importance safety notice :Components identified by mark have specialcharacteristics important for safety. Furthermore, specialparts which have purposes of fire-retardant (resistors), high-quality sound (capacitors), low-noise (resistors), etc. areused. When replacing any of components, be sure to use

only manufacturers specified parts shown in the parts list.Caution !IC, LSI and VLSI are sensitive to static electricity.Secondary trouble can be prevented by taking care duringrepair.

Cover the parts boxes made of plastics with aluminium foil.

Put a conductive mat on the work table.

Ground the soldering iron.

Do not touch the pins of IC, LSI or VLSI with fingers directly.

17 Schematic Diagram

61

SA-AK631GCP

17.1. (A) CD Servo Circuit

: CD-DA SIGNAL LINE

IC7003AN8739SBTE2

FOCUS COIL/TRACKING COIL/

TRAVERSE MOTOR/SPINDLE MOTOR DRIVE

R76014.7

CN7001

Q7601

Q7601B1ADCF000001LASER POWER DRIVE

37 38

3536

GND

GND

F-

T+

T-

LPD

VREF

A

B

GND

LD GND

LD

E

F

VCC C76016.3V33

R76505.6

C76146.3V100

C76130.1

M7301TRV MOTOR

M7302SP MOTOR

R733122K

R7328 18K

R734915K

C73390.01

R7329 1.5K

C73380.22

R73235.6K

C73520.01

R73271.5K

R7335100

C73350.1

C733410V220

R733610

F+

C76700.1

R73152.7K

R7325560

C73150.22

SCHEMATIC DIAGRAM - 1

CD SERVO CIRCUITOPTICALPICKUP CIRCUIT

: +B SIGNAL LINE

M

M

12

11

10

2

4

6

8

9

7

5

3

1

13

14

15

16

IC7003

VCC

NC

NC

RST

ININ3

IN4

VREFNC

/RST

GND

GND

PVC

C2

PGN

D2

D4+D4-

D3+D3-

PGN

D1

PVC

C1

NC

D2+

D2-

D1+

D1-

IN1

NC

PC2

NC

IN2

NC

3456

24 25 26

8 12

2321

9

20

10

19

11

18

1213

171615 22

7

14

R73391K

C72040.1

C72036.3V220

C

C

C

C

C

LASER DIODE

11

1210

68

5

49

23

12

11

10

2

4

6

8

9

7

5

3

1

13

14

15

16

GND

VCC

AIN

BIN

VREF

NAOUT

GND

NBOUT1

2

3

4 5

6

7

8

62

SA-AK631GCP

: CD-DA SIGNAL LINE

CN7002

16

REST SW

1

/RST

BLKCKMLD

MDATAMCLKP.GND+7.5V

LD SWD.GND

+3.3VRCH OUT

A.GND

S7201REST SW

C7243

0.1

IC7002MN6627953HBSERVO PROCESSOR

DIGITAL SIGNAL PROCESSOR/DIGITAL FILTER/D/A CONVERTER

TO

C71020.47

R72171K

LCH OUT

23

C7253 470P

R72181K

21

C72251000P

C72261000P

R7253C71660.01

C71610.1

SCHEMATIC DIAGRAM - 2

CD SERVO CIRCUIT

: +B SIGNAL LINE : CD SIGNAL LINE

MLDMDATA

TXFLAGMCLK

STATBLKCKNRST

DVSS3X2X1

IOVDD2DQSYTXTD

TXTCKGIO0GIO1GIO2

GOUT0GOUT1

EXT1

EXT2

PWM

SEL

SPO

UT

TRVP

TRVM

TRVP

2TR

VM2

TRP

TRM

FOP

FOM

IOVD

D3

DVD

D1

DVS

S1AD

PVC

CTE

INFE

IN

SPPO

L

EXT0

RFIN

FE

FEOUTFENTENTEOUTVREFPD

DB

ADCDETRFVDD

RFOUT

CEA

LD

C

RFENV

RESERVE

AVD

D2

NTE

ST

CAG

C

PLFF

0

ARFO

UT

AVSS

2AR

FIN

DSL

FIR

EFPL

LF

AVSS

1N

C

OU

TR

IOVD

D1

REG

ON

IOM

OD

E

DVS

S2

AVD

D1

OU

TL

DVD

D2

1234567891011121314151617181920

2122232425262728293031323334353637383940

41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

64

616263

68

656667

72

697071

7374757677787980

STAT

MAIN CIRCUIT(CN2801) ONSCHEMATICDIAGRAM-5

29

C71070.022

C71050.1

C71060.1

R71061K

R71041K

C7147390P

R714447K

C71420.022

C7110470P

R71024.7K

R710539K

C71493900P

C71550.1

30

C72

1668

0P

R721182K

C72

440.

015

C72

170.

1C

7241

1000

PC

7218

0.08

2

R7212820

C72240.1

C72236.3V100

R7221100

C72

630.

1 C723416V10

25

10

R7254

1K

R72201M

R7214680X7201

H2B169500002

C72330.1

C72326.3V220

C72300.1

C72316.3V220

C72640.1

C723516V10

C76260.1

C76256.3V220

15

2620

22

GND

IN OUT

16

123456

14

12

10

87

9

11

13

15

63

SA-AK631GCP

17.2. (B) Main (Tuner) Circuit

MAIN (TUNER) CIRCUIT

SCHEMATIC DIAGRAM - 3

C26471000P

JK2601

IC2602LC72131MDTRM

PLL FREQUENCY SYNTHESIZER

IC2601LA1833NMNTLM

FM/AM IF AMPDET/AM OSC MIX/

FM MPX

CF2601J0B1065A0019

X260

3H

0H72

0400

007

D2601B0BC5R000009

Q2606

Q2606B1GCCFJJ0016

TUNER 15VSUPPLY SWITCH

R26

34

4

70

R26

35

1

KQ2601

Q2601B1AABC000003

FM IF AMP

+7.5VSD

DO/ST

15VTGND

PLLCLKDO/STPLLDALCH

CERCH

DO

/ST

CE

PLLD

A

PLLC

LK

DO

/ST

SD

C26030.01

C26041000P

R26041K

R2606470K

R2607330

R26010

R2605470

C26010.01

C260216V10

R2603270

TUNER PACK CIRCUIT

C26070.047

R26101K

R2612100K

C26088P

C26361000P

R26145.6K

R26520

C26100.01

TOMAINCIRCUIT(2B) ONSCHEMATICDIAGRAM-8

R26383.3K

R263010K

C263412P

C263312P

C26120.01

R26

1556

0

R26161K

C261150V4.7

R26

1310

K C262516V22

C26321000P

C26306.3V100

R26

5182

C26

1310

00P

R26193.3K

R2611390

R262882

R261747K

R26183.3K

C262716V22

Z2602G2BAD0000003

C26261

C26060.01

C261450V3.3

C26091000P

C26

1550

V4.7 C

2616

0.03

3

R262047K

R264322K

C26380.01

R26

2368

K

C262016V10

R2621

22K

R26

024.

7KC

2639

50V4

.7

C2619680P

C26

180.

01

C26170.01

C264250V1

R26426.8K

C264150V1

R26416.8K

R26261K

R26

2547

0

R2629 27K

R26

2747

0

C2624100P

R263210K

C26480.01

R26

2433

X260

2H

3F10

65A0

002 C26

2250

V1R

2622

2.7K

C262150V0.47

R2631120

R2644120

R26331K

C26296.3V100

C26490.1

C262350V1

R2645100K

C26436800P

C26446800P

R2646100K

TOMAINCIRCUIT(2A) ONSCHEMATICDIAGRAM-8

1A

1B

1

2

3

4

CF2602J0B1065A0019

R26

36

1

K

R26

37

1

K

L2601GNS-A0882DC

L2602G2BPC0000016

D2602B0CDBB000015

: +B SIGNAL LINE

STR

Q

SDC

LW

AIN

PD

AOU

T

VDD

FMIN

AMIN

IFIN

MO

NO

FMAMCE

DI

CL

DO

VSS

XOU

TXI

N

IC2601 PIL

OT

OU

T

MPX

IN

PILO

T IN

DET

OU

TST

AM O

UT

RC

H

LCH

MO

NO

FM/A

M

OSC AF

C

AM R

F IN

AGC

AM M

IX O

UT

REG

AM IF

IN

GN

D

SD FM D

ET

VCC

STR

Q

OSC

OU

TFM

IF IN

1 2 3 4

21222324

5

20

6

19

7

18

8

17

9

16

10

15

11

14

12

13

AM LOOP ANT

AM EXTANT

75 OHM

FM EXT ANT

GND

C26

37

C26

3115

0P

3300

P

1 2

1920

3

18

4

17

5

16

6

15

7

14

8

13

9

12

10

11

1

2

3

5 6

4

1 3

2

1 3

2

1

2

3

4

5

7

6

8

5.6P 2SK544

100K 1000P

220

100K180P

2.2P

1.2U

680K

3.3P

18P

2SC2786M

390

0.47U

1000P

390

680K 5.6P

2SC2787FL1TA

2SC1675l1l2

2.2P

390560K

4.7P

2.2P

2.7K

100K

: FM/AM SIGNAL LINE: FM SIGNAL LINE: FM OSC SIGNAL LINE

: AM SIGNAL LINE: AM OSC SIGNAL LINE

64

SA-AK631GCP

17.3. (B) Main Circuit

MAIN CIRCUIT

SCHEMATIC DIAGRAM - 4

14

13

12

11

10

2

4

6

8

9

7

5

3

1

CN2805

BOTTOMSW

PLUNGER

POSITION

5V

DGND

CD_SW2

PGND

CD_SW1

OPEN

CLAMP

CHG_CCW

CD8V

CHG_HALF

CHG_CW

TOCD LOADINGCIRCUIT(CN1) ONSCHEMATICDIAGRAM-12

CHG_CW

CHG_HLF

CHG_CCW

CHG_SW1

CHG_SW2

VREF+

CHG_AD1

TODECKCIRCUIT(CN1001) ONSCHEMATICDIAGRAM-15

CHG_AD2

CN2803

: +B SIGNAL LINE

: -B SIGNAL LINE : MAIN SIGNAL LINE

: AUX SIGNAL LINE

R294410K

R294547K

R294647K

R294310K

R2942 22K

R2941 12K

SW5VR2940 220

R2939 22K

R2938 12K

CD8V

CHG_PLR

Q2937

MOT10V

C29360.47

D2936B0EAKM000117

Q2936 Q2937B1GBCFJJ0051

PLUNGER MOTORSUPPLY CONTROL SWITCH

R293710K

R29361K

Q2936B1ACKD000005

CD MOTOR SUPPLY SWITCH

10

11

12

13

14

1

2

4

6

8

9

7

5

3

CR02

MOTOR

BP1DECK1_H

DMT

MOT+B

REC_H

+15V

RECINR

RECINL

AFGND

PBR

PBL

MOT10V

/REC

+15V

REC_R

REC_L

PBR

PBL

JK2801

RCH

AUX

LCH

R221612K

R22172.7KC2217100P

C2216680P

R211612K

R21172.7K

C2117100P

C2116680P AUXL

C29980.1

-9V

R21920

R21911K

C21920

R2193100K

C21930.1

R22920

R22911K

C22920

R2293100K

C22930.1

C219416V10

R21971KLO_L

C229416V10

R22971K

LO_R

Q2181 C21828200P

C21818200P

R21835.6K

HI_L

C21831

R21843.3K

R21812.7K

R218222K

Q2281

R22835.6K

C22831

R22812.7K

R228222K

HI_R

C22828200P

C22818200P

R21520

Q2181,Q2281B1ABCE000016HPF FREQ AMP SWITCH

R22843.3K

DEC

K1_H

/MTR

C297616V10

R22520

MOGND

AUXR

: RECORD SIGNAL LINE

: PLAYBACK SIGNAL LINE

SW5V

Q2978

R2976

0

R29770

C21841500P

C22841500P

C21910

C22910

+9V

Q2978B1GDCFJJ0047

SWITCH

Q2980B1GDCFJJ0047DECK MOTOR SWITCH

R2154100K

R2254100K

+9V

D2813B0ACCK000005

DC

DET

D2811B0ADCJ000020

SW5V

CD

7.5V

R289947K

VREF

+

SUB1

R229610K

R219610K

C2552100P

L2996ERJ3GEY0R00V

65

SA-AK631GCP

MAIN CIRCUIT

SCHEMATIC DIAGRAM - 5

TOCD SERVO CIRCUIT(CN7002) ONSCHEMATIC DIAGRAM-2

CN2801

: +B SIGNAL LINE : CD SIGNAL LINE

: MAIN SIGNAL LINE

CN2806

R22713.3K

R21713.3K

R22701 R21701

R216933

R216733

R216833

R216633

C21661000P

R226933

R226733

R226833

R226633

C22661000P

Q2142,Q2242B1ABCE000016

AGC CONTROLQ2242

R22461KC2245

16V10R2247100K

D2241B0ACCK000005

R22486.8K

R22492.2K

HP_

R

HP_

L

R2928 10K

R29

230

R29

170

R29

150

R29

130

R29

260

R29

110

R29

16

4

.7K

C29010.1

C29

05

1

6V10

0

C29

0216

V10

/RES

TSW

RESTSW

BLKCK

CDSTAT

CD_RST

MCLK

MDATAMLD

/RST

STAT

BLKC

LKM

LDM

DAT

AM

CLK

PGN

D+7

.5V

LD_S

W

CD

3.3V

RC

H_O

UT

AGN

DLC

H_O

UT

: -B SIGNAL LINE

C29

0747

0P

CD

_GN

D

R2929 10K

R2930 10KR2931 10K

C2906 1000P

R29

14

4

.7K

R29

12

4

.7K

R29274.7K

Q2901B1ACKD000005

SWITCH

SYS6

V

C215116V10

C225116V10

R21492.2K

C22421

R22412.7K

C22411 OUT2

R2243100K

R224222K

R214222K

Q2571

R21461K

Q2142C2142

1R21412.7K

C21411

R2143100K

Q2571B1GFGCAA0001

MUTING SWITCH

OUT1

R25012.2K MUTE_A

R2503150K

-9V

R250256K C250150V2.2

PCO

NT

SYN

CSW

5V

VREF

+R

MT

PHO

TO_1

PHO

TO_2

KEY1

KEY2

KEY3

DEC

K2

SSEQ

_LED

FL_C

LKFL

_DO

UT

FL_C

SFL

_RST

v_JO

G_B

V_JO

G_A

MO

T10V

/PLG

2/P

LG1

/MO

DE_

1/H

ALF_

1H

P_R

HP_

L

C27510.1

HP_

R

HP_

L

/HAL

F_1

/MO

DE_

1

/PLG

2/P

LG1

MO

T10V

v_JO

G_B

V_JO

G_A

FL_R

STFL

_CS

FL_D

OU

TFL

_CLK

SSEQ

_LED

DEC

K2

KEY1

KEY2

KEY3

PHO

TO_1

PHO

TO_2

RM

TVR

EF+

SYN

CSW

5V

PCO

NT

SYS6

V

C27530.1

C29990.1

R29330

D2904B0EAKM000117

R290315

R290212

R290110K

C29030.01

R2910330

R29092.2K

C290416V100

Q2902

R29071K

R2908330

R29320

D2901B0ADCC000002

SW5V

CD8V

R29

18

1

0K

R29

24

1

0K

C22011

C21011

R22011.2K

R21011.2K

R21021.8K

R22021.8K

C22020.1

C21020.1

C22031000P

C21031000P

LCHRCH

R29194.7K

Q2906

R29254.7K

Q2907

SW5V

R292210K

R29204.7K

R29214.7K

Q2902B1AACF000064

SWITCH

Q2906,Q2907B1ABCE000016

SWITCH

R2403330K

C240110P

C240247P

R25320

IC2804 IC2804C0AABA000009DUAL OP-AMP

CONN

CONNR2402 15K

R240482K

IC2806

C25200.01

-9V

C230247P

R2303330K

R25

31 0

C230110P

R230215K

CONN1

CO

NN

1

R230482K

CO

N

CO

N

C25210.01 C25120.47

R252210K

-9V

R2523100K

C25130.1

R252010K

C2526220P

R2518100K

R251918K

C2527 1

R25382.2K

IC2806C0ABBB000244

DUAL OP-AMP

R252110K

CONN3

CO

NN

3

+9V

IC2805

C25251

CONN4

-9V

R25120

R2511220K

C25110.022

R240147K

R230147K

R25134.7K

C25221

R2514100K

R2517100K

C25231R25161K

CO

NN

4 R253533KR25158.2K

R253310K

R2539100K

33

D25

12B0

JCAE

0000

01

R25341.5K

TOPANEL CIRCUIT(CN6601) ONSCHEMATIC DIAGRAM-10

IC2805C0ABBB000244

DUAL OP-AMPQ2501

B1GDCFJJ0047MUTING CONTROL

CD

7.5V

SUB1

+9V

SW_L

EDSW

_LED

+9V

MIC

MIC

R20

07 0

C27520.1

R214510K

R224510K

1 2

78

3

6

4

5

1 2

78

3

6

4

5

1 2

78

3

6

4

5

1

2

34

5

6

N

15 14 13 12 11 10 24689 7 5 3 130 29 28 27 26 25 1719212324 22 20 18 1636 35 34 33 32 31

15 14 13 12 11 10 24689 7 5 3 116

R20060

66

SA-AK631GCP

MAIN CIRCUIT

SCHEMATIC DIAGRAM - 6: +B SIGNAL LINE

Q2701

C270516V10

C270816V100

C27060.01

C27010.01

D2705B0ACCK000005

R270810K

R2709100K

R2710220K

R2711100

R2713100K

R271510K

R27052.2K

R27012.2M

Q2705

Q2704

C270710V10

12CN2810

DC

DET

-9V

SW5V

Q27012SD0592ARA

SWITCH

D2703B0ACCK000005

FAN

D2704B0ACCK000005

Q27062SD0601AHL

SWITCH

R271222

R27071K

TO FAN UNIT

R2714120K

R27023.3K

R27040

Q2704,Q27052SB0709AHL

LOW FREQUENCY AMPLIFIER

R233239K

R2591330K

+9V

R23310

R23330

C23320

D2332B0ADCC000002

C23340.22

R2337470K

R23381K

LM_L

R25371KQ2511B1GDCFJJ0047

SWITCH

R25271K

HAR

MO

NIC

_SW

R2525100K

Q2512B1ABCE000016

SWITCH

CO

NN

4

R27062.2K

: -B SIGNAL LINE

R2561

3.3K16V10

C25560.01

R2564330K

C2555100P

R25653.9K

R25

63

C25580.18

C255947P

C25601

R25662.2K

C25570.01

C25530.01

C255416V1IC2810

R255918K R2558

3.3K

R25561K

R25571K

Q2554 Q2553

R2568100K

Q2552 Q2551

SW_L

V2

SW_L

V1

R256247K

D2551UDZSTE172R4B

D2552UDZSTE172R4B

39K

C2551 R2560

47K

C25611

-9V

R25551K

SUBW

12

7 8

3

6

4

5

IC2810C0ABBB000244

DUAL OP-AMP

Q2553,Q2554B1ABCE000016

SUBWOOFER LEVEL CONTROL

Q2551,Q2552B1GDCFJJ0047

SWITCH

R231410K

MIC

12

7 8

3

6

4

5

IC2808

C231447P

C231310P

R231568K R2312

68K

R23

20 0

C23151

R231368K

R25961K

C25860.01

D2596B0BC4R300002

R23195.6K

VIN

1

SEL1

+9V

D25

95B0

BC4R

3000

02

C25870.01

C241447P

C241310P

R241268K

R23392.2K

R24195.6K

R241568K

R25920

R24392.2K

C23311

IC2808C0ABBB000244

DUAL OP-AMP

-9V

R25951K R24200

VIN

2

R241410K

MIC

R241368K

SEL2

C24151

67

SA-AK631GCP

R28341K

4344454647484950

424140393837363534333231

3029282726

100999897969594939291908988878685

81828384

25242322212019181716151413121110987654321

DCDET

PCONT

EE_DATEE_CLKEE_CS

MUTE_A

C28

11

C28

15C

2814

C28

13C

2812

RESTSWCHG_HLFCHG_CWCHG_CCWCHG_SW1CHG_SW2CHG_PLRCHG_AD2CHG_AD1

DECK2KEY3KEY2KEY1PHOTO_2

PHOTO_1

VREF+VCC

7677787980 64 636566676869707172737475 515253545556575859606162

MO

DE_

1SW

_LEDN

CPL

G1

PLG

2M

TRR

ECD

ECK1

_HNC

VCC

NC

VSS

NC

NC

V_JO

G_B

V_JO

G_A

SSEQ

_LED NC

HAL

F_1

EX1_

CLK

EX1_

DAT

FL_R

ESET

FL_C

SFL

_DO

UT

FL_C

LK/CD

CD

_RST

STAT

US

MLD

MD

ATA

MD

ATA

REG8REG7REG6REG5

PCONT/EFP_/CE

EE_CS/EFP_/EPM

NCNC

NC

DCDET

REG1REG2

REG4

EE_CLKEE_DAT

NCNC

REG3

MUTE_HMUTE_A

CN

VSS/

EFP_

CN

VSS

/RES

ET/E

FP_R

ESET

XC_O

UT

X_O

UT

X_IN

VCC

RM

TBL

KCK

SYN

CST

/DO

HAR

MO

NIC

_SW

SD S

W_L

V1SW

_LV2

NCPLL

CE

RD

S_D

ATR

DS_

CLK

NC

NC

BYTE

XC_I

N

VSS

LM_L

/NM

I

ASP_

DAT

ASP

_CLK

PLLC

KPL

LDA

LM_R

CHG_SW1CHG_SW2

AVCCVREF

CHG_AD1CHG_AD2CHG_PLR

CHG_CCWCHG_CWCHG_HLF/RESTSW

DEMO SELECTOR

MCLK

DECK2KEY3KEY2KEY1

AVSSPHOTO_2

PHOTO_1R

2841

10K

/REC

/MTR

DEC

K1_H

/PLG

2/P

LG1

/MO

DE_

1/H

ALF_

1

MLD

CD

_RST

SSEQ

_LED

EXP_

DAT

EXP_

CLK

V_JO

G_B

V_JO

G_A

VCC

R28920

C2821 100P

D2802B0ADCJ000020

R28

03

10K

R28

0210

0

R2891 47K

C285416V100

C285216V100

SYS6V

RM

TBL

KCK

SYN

CD

O/S

T

ASP_

DAT

ASP_

CLK

LM_L

VCC

XC_I

NXC

_OU

T

X_O

UT

XIN

C2851

C28530.1

Q2806

Q2806B1GBCFJJ0051

POWER RESETCONTROL SWITCH

D2804B0ACCK000005

C285750V2.2 VREF+

C284118P

C284018P

R2881220

R2883330K

R288210M X2801

H0A327200073

IC2801C2CBJG000561

MICROPROCESSOR

MAIN CIRCUIT

SCHEMATIC DIAGRAM - 7

: +B SIGNAL LINE

MUTE_H

0.1

HAR

MO

NIC

_SW

SD

R2858 100R2859 100R2860 100

MCLK

FL_R

STFL

_CS

FL_D

OU

TFL

_CLK

CD

STAT

R2867100K

R28

44

1

0K

R28

42

1

0KR

2843

1K

R28

45

1

0KR

2846

4.7

K

C28561

C2831 0.022C2832 330P

C2833330P

R2878

4.7K

R2876 22K

EE_C

LK

EE_C

S

EE_D

AT

5 6 7 8

34 2 1

VREF

+

IC2802C3EBDG000052

E-EPROM IC(NOT SUPPLIED)

R28

1710

0K

R28

1810

0K

R28

1910

0K

R28

2010

0K

R28

2110

0K

R28

2210

0K

R28

2310

0K

R28

2410

0K

PLLC

E

R28861M

X2802H2B100500004

R28110

PLLD

APL

LCK

R2804 47K SW5V

R2862

100

C28

1710

0P

R2861100

C28

1610

0P10

0P10

0P10

0P10

0P10

0P

R25

24

1K

R2856 100R2857 100

C2820 100P

C2819 100P

C2818 100PR2805 47K

R2807 10KR2806 10K

R2877 22K

R2810 22K

R280110K

CN

VSS

SW_L

V2SW

_LV1

BUSYCLKRXDTXD

R28

2610

K

VREF+

SW_L

ED/CD

VREF+

R2831100K

R283010K

R282710K

GND

IN OUT

68

SA-AK631GCP

TOPOWERCIRCUIT(CN5800) ONSCHEMATICDIAGRAM-13

CN2809

MAIN CIRCUIT

SCHEMATIC DIAGRAM - 8

TOPOWERCIRCUIT(CN5801) ONSCHEMATICDIAGRAM-13

CN2808

TOMAIN (TUNER)CIRCUIT(1A) ONSCHEMATICDIAGRAM-3

TOMAIN (TUNER)CIRCUIT(1B) ONSCHEMATICDIAGRAM-3

: +B SIGNAL LINE

: CD SIGNAL LINE

: AUX SIGNAL LINE

: PLAYBACK SIGNAL LINE

: RECORD SIGNAL LINE

PBL

PBR

REC_R

REC_L

R2318 2.7K

VIN2

P_GNDFL_GNDUP GND

CD8V

MOT10V+9V-9V

SW5V

CD8V

MOT10V+9V-9VSW5V

R2571

2.2K

T GND

DC_DETFAN

MUTE_H+15V +15V

HIGH_LIN

HIGH_RINA_GND

LO_LLO_R

LOW_LINLOW_RIN

PLLCE

PLLDA

2A

2B

D29

51

D2951B0BC7R500001

DCDETMUTE_H

HI_LHI_R

+7.5VSD

DO/ST

+15V

PLLCLKDO/STPLLDA

LCHCE

RCH

+9V

+15V

SD

PLLCLK

FAN

AGND

: -B SIGNAL LINE

: FM/AM SIGNAL LINE

: MAIN SIGNAL LINE

VIN1

DO/ST

C297716V100

R23164.7K

C23120.15

C23110.18

R24164.7K

IC2803C1BB00000732

AUDIO SOUND PROCESSOR

R2317100K

C21201

C24120.15

C24110.18

R2418 2.7K

R2417100K

C22201

R211110K

R211222K

C21110.1

C21121500P

R221110K

R221222K

C22110.1

C22121500P

R2206 100

C22063300P

R2952 4.7K

C21210.1

C22210.1

R21036.8K

C21260.1

C22260.1

R21086.8K

C21310.22

C22310.1

R21138.2K

C21360.22

C22360.1

R21188.2K

OUT1

OUT2

C25830.22

ASP_

CLK

R25861.2K

SW5V

R2584330K

C2584220P

R2585330K

C2585220P

ASP_

DAT

R25871.2K

C25880.1

C258216V100

R25820

+9V

C258110V33

AUXR

C22191000P

C22180.1

AUXL

C21191000P

C21180.1

C22140.01

C21140.01

R220747K

R2106 100

C2207 0.1

C22081000P

C21063300P

R210747K

C21081000P

C21070.1

RC

H

LCH

C29510.01

TGND

C29520.01

R295427

R295310K

SUBWSUBW

SEL2

SEL1

121110

2

4

6

89

7

5

3

1

121110

2

4

6

89

7

5

3

1

B1(L)

C1(L)

VIN1

SEL1

VIN2

A1(L)

SEL2

IC2803

BNF1

REC1

REC2

MNF1

MOUT1

MNF2

MOUT2

C2(R)

D1

D2

E1(L) CAP

OUT2

OUT1

BOUT2

BNF2

B2(R)

E2(R)

FILTER

GND SC

SI

VCC

BOUT1

A2(R)

1

2 31

32

3 30

4 29

5 28

6 27

7 26

8 25

9 24

10 23

11 22

12 21

13 20

14 19

15 18

16 17

69

SA-AK631GCP

17.4. (C) Panel Circuit

: MAIN SIGNAL LINE

H6555/W6555

-VP