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ORDER NO. MD0601013C3 CD Stereo System SA-AK640GCP Colour (S)... Silver Type Notes: This model’s CD mechanism changer unit is CRS1. Please refer to the original Service Manual (Order No. MD0509368C0) for this mechanism. Specifications n AMPLIFIER SECTION S/N 20dB (at 999 kHz) 560 µV/m...
SA-AK640GCP Disc played [8 cm or 12 cm] AC 110 to 127/220 to 240 V, 50/60Hz (1) CD-Audio (CD-DA) Power consumption 130 W (2) CD-R/RW (CD-DA, MP3, WMA formatted disc) Power consumption in standby 0.6 W mode (3) MP3/WMA Dimensions (W x H x D)
SA-AK640GCP 1 Safety Precautions 1.1. General Guidelines 1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit. 2. After servicing, ensure that all the protective devices such as insulation barriers and insulation papers shields are properly installed.
SA-AK640GCP · 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 are “shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.
SA-AK640GCP 3 Handling Precautions For Traverse Deck The laser diode in the traverse deck (optical pickup) may break down due to potential difference caused by the static electricity of clothes or our human body. So, be careful of electrostatic breakdown during repair of the traverse deck (optical pickup).
SA-AK640GCP 4 Precaution of laser diode CAUTION: This unit utilizes a class 1 laser diode in the optical pickup unit . Invisible laser radiation is emitted from the optical pickup lens. Wavelength: 780nm When the unit is turned on: 1. Do not look directly into the optical pickup lens.
SA-AK640GCP 5 Handling the Lead-free Solder 5.1. 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 - 70°F (30 - 40°C) higher. Please use a high temperature soldering iron.
SA-AK640GCP 6 New Features 6.1. CRS1 Mechanism Overview 6.1.1. General Feature · This is a five disc changer mechanism for CD/DVD. The outline figure is shown below.
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SA-AK640GCP · The mechanism has "CHANGE WHILE PLAY" function. It open other trays for disc exchanging while one tray is at PLAY position performing recording or reproducing. · The mechanism can quickly change all trays with "CHANGE ALL" function. All trays can be move to OPEN position with one operation.
SA-AK640GCP Note: * represent tray number (from 1 ~ 5) 6.1.4. New CD Mechanism (CRS1) Note: This service manual does not contain the following information for the mention CD Mechanism drive: · Schematic Diagram, Block Diagram and P.C.B. layout of CD Loading P.C.B.
SA-AK640GCP 9 Self diagnosis and special mode setting This unit is equipped with functions for checking and inspecting namely: Self-Diagnostic and Test Mode. 9.1. Special Mode Table Item FL Display Key Operation Mode Name Description Front Key Self -Diagnostic enter...
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SA-AK640GCP Item FL Display Key Operation Mode Name Description Front Key FL Display Test To check In doctor mode: segments display (All 1. Press [DIMMER] button on remote control. segments will light up and LED will blink at 0.5 second interval)
SA-AK640GCP 9.2. Error code Table Self-Diagnosis Function (refer Section 9.1) provides information on any problems occuring for the unit and its respective components by displaying the error codes. These error code such as U**, H** and F** are stored in memory and held unless it is...
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SA-AK640GCP The error code is automatically display after entering into self-diagnostic mode. Error Code Diagnosis Contents Description of error Automatic FL Display Remarks Mode SW, plunger For deck mechanism unit (For deck 1/2). and capstan motor Press [ ] on main unit for abnormal next error.
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SA-AK640GCP Error Code Diagnosis Contents Description of error Automatic FL Display Remarks ITOP UD assembly UD Rack does not move For CD changer unit (CRS1). Press [SINGLE CHANGE] on main unit to front direction. This lead to UD base not for next error.
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SA-AK640GCP Error Code Diagnosis Contents Description of error Automatic FL Display Remarks SRVC_TRV To unlock the 1. All trays For CD changer unit (CRS1). traverse unit for “STOCK” position Press [SINGLE CHANGE] on main unit. service 2. Mechanism set to tray 5 3.
SA-AK640GCP 10 Assembling and Disassembling 10.1. Caution Special Note: This model uses a new CD changer unit CRS1. In this following section does not contain the necessary disassembly & assembly information for the CD changer unit (CRS1) except the disasembly & assembly of traverse unit. Kindly refer to the original service manual for the CD changer unit.
SA-AK640GCP 10.2. Disassembly flow chart The following chart is the procedure for disassembling the casing and inside parts for internal inspection when carrying out the servicing. To assemble the unit, reverse the steps shown in the chart as below.
SA-AK640GCP 10.4. Disassembly of Top Cabinet Step 1 Remove 3 screws at each side and 5 screws at rear panel. Step 2 Lift up both sides of the top cabinet, push the top cabinet towards the rear to remove the top cabinet.
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SA-AK640GCP Step 2 Detach the FFC cables (CN2801 & CN2805). Step 3 Release the claws on both ends. Step 5 Remove 2 screws. Step 6 Remove the Mecha Chassis. Note: For disassembly & assembly of traverse unit, please refer to section 10.14 of this service manual.Please refer to original...
SA-AK640GCP 10.7. Disassembly of Main P.C.B. · Follow the (Step 1) - (Step 2) of Item 10.4 - Disassembly of Top Cabinet · Follow the (Step 1) - (Step 4) of Item 10.6 - Disassembly of CD Changer Unit · Follow the (Step 1) - (Step 3) of Item 10.5 - Disassembly of Rear Panel Step 1 Disconnect FFC cables (CN2803, CN2806 and CN2951).
SA-AK640GCP 10.9. Disassembly of Power P.C.B. · Follow the (Step 1) - (Step 2) of Item 10.4 - Disassembly of Top Cabinet · Follow the (Step 1) - (Step 4) of Item 10.6 - Disassembly of CD Changer Unit · Follow the (Step 1) - (Step 3) of Item 10.5 - Disassembly of Rear Panel ·...
SA-AK640GCP 10.10. Disassembly of Front Panel Unit · Follow the (Step 1) - (Step 2) of Item 10.4 - Disassembly of Top Cabinet · Follow the (Step 1) - (Step 4) of Item 10.6 - Disassembly of CD Changer Unit Step 1 Disconnect connectors (CN2803, CN2806, CN2951, Step 3 Release 2 claws outwards.
SA-AK640GCP 10.11. Disassembly for Panel P.C.B. · Follow the (Step 1) - (Step 2) of Item 10.4 - Disassembly of Top Cabinet · Follow the (Step 1) - (Step 4) of Item 10.6 - Disassembly of CD Changer Unit · Follow the (Step 1) - (Step 4) of Item 10.10 - Disassembly of Front Panel Unit Step 1 Remove the volume knob.
SA-AK640GCP 10.12. Disassembly of Deck mechanism unit · Follow the (Step 1) - (Step 2) of Item 10.4 - Disassembly of Top Cabinet · Follow the (Step 1) - (Step 4) of Item 10.6 - Disassembly of CD Changer Unit ·...
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SA-AK640GCP Step 3: Remove the traverse unit as arrow shown. · Assembly of Traverse Unit Step 1: Press and hold the plunger lever and rotate the gear as arrows shown until it stop. Step 1: Turn over the unit and install the traverse unit.
SA-AK640GCP Step 2: Push the traverse slide plate as arrow shown to lock the traverse unit. 10.15. Disassembly of optical pickup unit (CD mechanism) · Follow the (Step 1) - (Step 2) of Item 10.4 - Disassembly of Top Cabinet ·...
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SA-AK640GCP Step 8 Remove the catch of the drive rack, and take out the drive rack. Step 4 Remove the traverse deck. Note: As floating springs (4 pieces) come off at the same time, be careful not to lose them.
SA-AK640GCP 10.16. Disassembly of Deck Mechanism · Follow the (Step 1) - (Step 2) of Item 10.4 - Disassembly of Top Cabinet · Follow the (Step 1) - (Step 4) of Item 10.6 - Disassembly of CD Changer Unit · Follow the (Step 1) - (Step 4) of Item 10.10 - Disassembly of Front Panel Unit ·...
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SA-AK640GCP Step 1 Release the catch, and then remove the pinch roller (F). Step 2 Release 2 claws and detach the head block connector. Step 3 Remove 2 screws. Step 4 Remove head block. 10.16.2. Disassembly of capstan motor ass’y, capstan belt A, capstan belt B and winding belt Step 1 Detach the head block connector (Deck P.C.B.).
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SA-AK640GCP Step 7 Put the capstan belt A temporarily as shown below. 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 the winding arm in the direction of arrow.
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SA-AK640GCP Step 10 Install 3 screws. Step 11 Put the capstan belt B as shown below. Step 12 Put the capstan belt A on the motor ass’y pulley.
SA-AK640GCP 10.17. Replacement for cassette lid · Follow the (Step 1) - (Step 2) of Item 10.4 - Disassembly of Top Cabinet Step 1 Lift up the lever upward, open the cassette deck. (For Step 2 Push up the cassette lid (L/R) in the direction of arrow.
SA-AK640GCP 11 Service Fixture and Tools Service Tools Extension 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) 12 Service Positions Note: For description of the disassembly procedures, see the Section 10.
SA-AK640GCP 13 Adjustment Procedures 13.1. Cassette Deck Section 13.1.2. Bias Voltage Check · Measurement Condition 1. Set the unit “AUX” position. − − − − Reverse-mode selector switch: 2. Insert the Normal blank tape (QZZCRA) into DECK 2 and − − − − Deck Tape Select: NORMAL the unit to “REC”...
SA-AK640GCP 13.2. Tuner Section This section include details on the alignment of AM-IF and AM RF adjustment. 13.2.1. AM-IF Alignment 1. Set up the equipments as shown in Fig. 5. 2. Select [TUNER] mode on selector and set to [AM] mode.
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SA-AK640GCP Fig. 7 13.2.3. Adjustment Point Below is the locations of alignment points on the Main (Tuner) P.C.B.
SA-AK640GCP 14 Voltage and Waveform Chart Note: Circuit voltage and waveform described herein shall be regarded as reference information when probing defect point, because it may differ from an actual measuring value due to difference of Measuring instrument and its measuring condition and product itself.
SA-AK640GCP 15 Wiring Connection Diagram FM ANT AM ANT H5104/ W5104 JK2601 CN5103 To Fan CN2810 TUNER PACK P.C.B POWER P.C.B MAIN P.C.B SOLDER SIDE SOLDER SIDE TUNER PACK CN2801 CN5102 BLACK CN2809 MOTOR CN2808 CN2805 JK5102 JK5101 CN2806 CN2803 30 .
SA-AK640GCP 17 Schematic Diagram (All schematic diagrams may be modified at any time with the development of the new technology) 17.1. Notes of Schematic Diagrams S951 : MODE Switch S952 : HALF Switch S971 : MODE Switch S972 : HALF Switch...
: FM/AM SIGNAL LINE : TAPE RECORD SIGNAL LINE : CD SIGNAL LINE MAIN CIRCUIT : TAPE PLAYBACK SIGNAL LINE : MIC SIGNAL LINE : -B SIGNAL : MAIN SIGNAL LINE SA-AK640GCP MAIN CIRCUIT C2263 R2161 R2261 50V1 4.7K 4.7K W2511...
SA-AK640GCP 17.7. (E) Power Circuit SCHEMATIC DIAGRAM - 6 POWER CIRCUIT : +B SIGNAL LINE : -B SIGNAL LINE : MAIN SIGNAL LINE SA-AK640GCP POWER CIRCUIT SA-AK64 IC5301 IC5401 IC5501 C1BA00000407 C1BA00000407 C1BA00000407 2-CH DIGITAL AMP 2-CH DIGITAL AMP 2-CH DIGITAL AMP...
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SA-AK640GCP : -B SIGNAL LINE : MAIN SIGNAL LINE CIRCUIT SA-AK640GCP POWER CIRCUIT IC5301 IC5401 IC5501 C1BA00000407 C1BA00000407 C1BA00000407 2-CH DIGITAL AMP 2-CH DIGITAL AMP 2-CH DIGITAL AMP R5418 R5519 R5520 R5419 R5140 R5142 R5522 R5138 C5314 C5318 C5414 C5418...
SA-AK640GCP 20 Terminal Function of IC's 20.1. IC7001 (MN6627954MA) Servo Processor,Digital Signal Processor/Digital filter and D/A Converter Pin No. Mark Function Pin No. Mark Function DRAM address signal O/P 11 IREF Reference I/P DRAM address signal O/P 9 PLLF PLL Loop Filter Terminal (Phase...
SA-AK640GCP 20.2. IC7002 (BA5948FPE2) IC 4CH Drive Pin No. Mark Function Pin No. Mark Function Motor Driver 92 Input Motor Drive (3) reverse - action output Turntable Motor Drive Signal (“L”:ON) Motor Drive (3) forward - action output Motor Drive (1) Input...
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SA-AK640GCP Pin No. Mark Function OPEN_SW Open_Sw for CRS1 CHG_CW CRS1 motor CW CHG_CCW CRS1 motor CCW ST_SW Stock_Sw for CRS1 PLAY_SW Play_Sw for CRS1 CHG_PLR Plunger for CRS1 BOTTOM_SW Bottom_SW for CRS1 UP_SENSOR UD-Sensor for CRS1 DECK2 DECK CONDITION INPUT 2...
SA-AK640GCP 22 Replacement Parts List Notes: · Important safety notice: Components identified by mark have special characteristics important for safety. Furthermore, special parts which have purposes of fire-retardent (resistors), high-quality sound (capacitors), low noise (resistors), etc are used. When replacing any of these components, be sure to use only manufacturer’s specified parts shown in the parts list.
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SA-AK640GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks RMS0398-1 MOVING CORE B1AAAC000016 TRANSISTOR RSJ0003 PLUNGER ASS’Y B1AAAD000015 TRANSISTOR RMC0061 PACK SPRING B1AAAD000015 TRANSISTOR RXF0061-1 FLYWHEEL F ASS’Y Q1003 B1AAGC000007...
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SA-AK640GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks DIODES VARIABLE RESISTORS B0CBAD000004 DIODE VR6491 EVEKE2F3524B VR VOLUME JOG B0CBAD000004 DIODE VR6511 EVUF2AF15B14 VR MIC VOLUME JOG B0CBAD000004 DIODE D951...
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SA-AK640GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks L5402 J0JKB0000037 FILTER JK6751 K2HC1YYA0002 JK MUSIC PORT L5403 J0JKB0000037 FILTER L5501 G0C220Z00002 COIL EARTH TERMINALS L5502 J0JKB0000037 FILTER L5503 J0JKB0000037...
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SA-AK640GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R1040 ERJ3GEY0R00V 0 1/16W R2282 ERJ3GEY0R00V 0 1/16W R1049 ERJ3GEY0R00V 0 1/16W R2283 D0GB104JA007 100K 1/16W R1050 ERJ3GEY0R00V 0 1/16W R2311...
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SA-AK640GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R2510 D0AF221JA039 220 1/4W R2702 ERJ3GEYJ102V 1K 1/16W R2511 D0GB222JA041 2.2K 1/16W R2703 D0GB224JA007 220K 1/16W R2512 D0GB104JA007 100K 1/16W R2704...
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SA-AK640GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R2929 ERJ3GEYJ103V 10K 1/16W R5205 D0GB104JA007 100K 1/16W R2930 ERJ3GEYJ103V 10K 1/16W R5206 D0GB105JA007 1M 1/16W R2931 ERJ3GEYJ103V 10K 1/16W R5207 ERJ3GEYJ682V 6.8K 1/16W...
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SA-AK640GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R6306 D0GB272JA007 2.7K 1/16W W2520 ERJ3GEY0R00V CHIP JUMPER R6307 D0GB472JA041 4.7K 1/16W W2523 ERJ3GEY0R00V CHIP JUMPER R6308 ERJ3GEYJ682V 6.8K 1/16W W2525...
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SA-AK640GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks W7015 ERJ3GEY0R00V CHIP JUMPER C2113 ECJ1VB1H682K 6800P 50V W7016 ERJ3GEY0R00V CHIP JUMPER C2114 ECJ1VB1C105K 1 16V W7017 ERJ3GEY0R00V CHIP JUMPER C2121...
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SA-AK640GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C2421 ECJ1VB1A224K 0.22 10V C2673 ECJ1VC1H101K 100P 50V C2423 ECJ1VB1H103K 0.01 50V C2674 F1H1H103A219 0.01 50V C2424 ECJ1VB1A105K 1 10V C2678 F1H1H103A219 0.01 50V...
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SA-AK640GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C5203 ECJ1VC1H101K 100P 50V C5434 ECJ1VB1H223K 0.022 50V C5204 ECJ1VC1H101K 100P 50V C5435 ECJ1VB1H223K 0.022 50V C5205 ECJ1VB1H104K 0.1 50V C5436...