Panasonic SA-AK631GCP Service Manual
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Panasonic SA-AK631GCP Service Manual

Cd stereo system
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Specifications

n AMPLIFIER SECTION
RMS output power
THD 10%, both channels driven
1 kHz
(Low channel)
10 kHz
(High channel)
80 Hz
(Subwoofer channel)
Total power output
n FM/AM TUNER, TERMINALS SECTION
Preset station
Frequency Modulation (FM)
Frequency range
Sensitivity
S/N 26 dB
Antenna terminal(s)
Amplitude Modulation (AM)
Frequency range
Sensitivity
S/N 20 dB (at 999 kHz)
Audio performance (Amplifier)
Input sensitivity/Input impedance
Aux
Phone jack
75 W per channel (5 Ω)
70 W per channel (5 Ω)
160 W (8 Ω)
450 W
FM 15 stations
AM 15 stations
87.50 - 108.00 MHz (50 kHz steps)
2.5 µV (IHF)
2.2 µV
75 Ω (unbalanced)
522 - 1629 kHz (9 kHz steps)
520 - 1630 kHz (10 kHz steps)
560 µV/m
250 mV,14.7 kΩ
SA-AK631GCP
Colour
(S)... Silver Type
Terminal
n CASSETTE DECK SECTION
Track system
Heads
Record/playback
Erasure
Motor
Recording system
Erasing system
Tape speed
Overall frequency response (+3 dB, -6 dB at DECK OUT)
NORMAL
S/N ratio
Wow and flutter
Fast forward and rewind time
n DISC SECTION
Discs 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
Sampling frequency
MP3
CD
Decoding
© 2005 Matsushita Electric Industrial Co. Ltd.. All
rights
reserved.
distribution is a violation of law.
ORDER NO. MD0503065C3
CD Stereo System
Stereo, 3.5 mm jack
4 track, 2 channel
Solid permalloy head
Double gap ferrite head
DC servo motor
AC bias 100 kHz
AC erase 100 kHz
35 Hz - 14 kHz
50 dB (A weighted)
0.18 % (WRMS)
Approx. 120 seconds with
C-60 cassette tape
32 kbps - 320 kbps
32 kHz, 44.1 kHz, 48 kHz
16 bit linear
Unauthorized
copying
4.8 cm/s
44.1 kHz
and

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Summary of Contents for Panasonic SA-AK631GCP

  • Page 1: Specifications

    ORDER NO. MD0503065C3 CD Stereo System SA-AK631GCP Colour (S)... Silver Type Specifications n AMPLIFIER SECTION Terminal Stereo, 3.5 mm jack RMS output power n CASSETTE DECK SECTION THD 10%, both channels driven Track system 4 track, 2 channel 1 kHz...

  • Page 2: Table Of Contents

    SA-AK631GCP Digital filter 8 fs Dimensions (W x H x D) 250 x 330 x 341 mm D/A converter MASH (1 bit DAC) Mass 7.1 kg Pickup Operating temperature range +5 to +35°C Wavelength 780 nm Operating humidity range 5 to 90% RH (no condensation)
  • Page 3 SA-AK631GCP 17.4. (C) Panel Circuit 20 Illustration of IC , Transistors and Diodes 17.5. (D) Transformer Circuit 21 Terminal Function of IC 17.6. (E) CD Detect Circuit, (F) Spindle Position Circuit, (G) CD 21.1. IC7002 (MN6627953HB) Servo processor/ Digital signal Loading Circuit &...

  • Page 4: Before Use

    SA-AK631GCP 1 Before Use Be 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 will be used.

  • Page 5: Prevention Of Electro Static Discharge (Esd) To Electrostatically Sensitive (Es) Devices

    SA-AK631GCP 4 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor “chip”...

  • Page 6: Handling Precautions For Traverse Deck

    SA-AK631GCP 6 Handling Precautions For Traverse Deck The laser diode in the traverse deck (optical pickup) may break down due to potential difference caused by static electricity of clothes or human body. So, be careful of electrostatic breakdown during repair of the traverse deck (optical pickup).

  • Page 7: Precaution Of Laser Diode

    SA-AK631GCP 7 Precaution of Laser Diode Caution : This product utilizes a laser diode with the unit turned "ON", invisible laser radiation is emitted from the pick up lens. Wavelength : 780 nm Maximum output radiation power from pick up : 100 µW/VDE Laser radiation from pick up unit is safety level, but be sure the followings: 1.

  • Page 8: Accessories

    SA-AK631GCP 8 Accessories Remote Control FM Antenna AC Cord AM Loop Antenna AC Plug Adaptor...

  • Page 9: Operation Procedures

    SA-AK631GCP 9 Operation Procedures...
  • Page 10 SA-AK631GCP...

  • Page 11: Disassembly And Assembly Of Main Component

    SA-AK631GCP 10 Disassembly and Assembly of Main Component “ATTENTION 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.

  • Page 12: Gear For Servicing (Jig) Information

    SA-AK631GCP 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.

  • Page 13: Disassembly Of Top Cabinet

    SA-AK631GCP 10.3. Disassembly of Top Cabinet Step 1 Remove 2 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 and remove the top cabinet.
  • Page 14 SA-AK631GCP Step 2 Release the 2 claws, and then remove the CD lid cover. Step 6 Press the POWER button to turn the power off. · [Opening the disc tray manually (Using service tools)] Step 3 Repeat Step 2 but rotate the gear tools in anti-clockwise direction.

  • Page 15: Disassembly Of Rear Panel

    SA-AK631GCP 10.5. Disassembly of Rear Panel · Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet Step 1 Remove 10 screws and disconnect wire CN2810 (Fan) at rear cabinet as shown. 10.6. Disassembly of CD Mechanism Unit ·...

  • Page 16: Disassembly Of Main P.c.b

    SA-AK631GCP 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 ·...

  • Page 17: Disassembly Of Power P.c.b

    SA-AK631GCP · Replacement of Power Amplifier IC Step 1 Desolder the terminals of Power Amplifier IC and replace the component. 10.9. Disassembly of Power P.C.B. · Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet ·...

  • Page 18: Disassembly Of Transformer P.c.b. & Voltage Selector

    SA-AK631GCP · Replacement of the Power Amplifier IC/ Voltage Regulator Step 3 Unsolder the terminals of Power Amp IC, transistor and replace the components. Step 1 Remove 2 screws fixed to the Power Amplifier IC and 1 Step 4 Fix back the cut portion with a screw as shown.

  • Page 19: Disassembly Of Front Panel Unit

    SA-AK631GCP 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 Step 1 Lay the unit as shown below.

  • Page 20: Cd Mechanism Main Component Replacement Procedures

    SA-AK631GCP Step 5 Tilt the cassette mechanism unit in the direction of arrow (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.
  • Page 21 SA-AK631GCP Caution: When removing or inserting the traverse deck avoid touching the OPU lens and pressing onto the turntable. Step 8 Remove 3 screws. Step 9 Unsolder the motor terminals (4 points). Step 4 With pressing the claw (A), rotate the hexagonal wrench clockwise.
  • Page 22 SA-AK631GCP Step 11 Remove the pin. · Note for installation of the CD servo P.C.B. Step 12 Release the claw, and then remove the traverse deck ass’y. Note: · Installation for traverse deck ass’y Be careful not to lose the 3 floating spring because those will also be removed on removal of the traverse deck ass’y.
  • Page 23 SA-AK631GCP Step 4 Force the disc tray fully. Step 3 Force the claw of timing lever. Step 5 With pressing the claw (B) in the direction of arrow (1), force the connection lever in the direction of arrow (2). 10.13.2. Replacement for the Disc Tray Step 1 Remove 4 screws.
  • Page 24 SA-AK631GCP Step 6 Insert the gear with hexagonal wrench into the hole. Step 9 With forcing the left guide bar manually because the left guide bar interfers with claw, draw the disc tray. [Installation of the disc tray after replacement] Step 7 Rotate the hexagonal wrench in the direction of arrow, and then open the disc tray fully.
  • Page 25 SA-AK631GCP NOTE: Force the right guide bar of tray base manually not to move upwards. Step 4 Holding the disc tray manually, push the disc tray in the direction of the arrow. 10.13.3. Disassembly and reassembly for mechanism base drive unit Step 1 Remove 3 screws.
  • Page 26 SA-AK631GCP Step 9 Pressing the claw (B) in the direction of arrow (1), force the connection lever in the direction of arrow (2). Step 6 Install the tray lock spring to hook temporary. Step 7 Release the claw, and then remove the tray lock.
  • Page 27 SA-AK631GCP Step 13 Remove the traverse relay gear, traverse cam gear and drive gear. Step 11 Lift up the left end of spindle base unit in the direction of arrow (1), and then remove the unit in the direction of arrow (2).
  • Page 28 SA-AK631GCP Step 3 Rotate the disc lever in the direction of arrow (1), draw the disc lever. NOTE: Hold the loading stopper ass’y manually bacause it is flipped by spring. NOTE: Take care not to lose the disc lever spring.
  • Page 29 SA-AK631GCP 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 12 Squeeze the shaft of lower hook, and then draw it. Step 13 Rotate the lower spindle in the direction of arrow until Step 10 Remove the lower spindle spring with tweezers.
  • Page 30 SA-AK631GCP spread the hold bars of loading stopper and remove the Step 1 Install the traverse cam gear. UP/DOWN base. Step 2 Rotate the traverse cam gear to the direction of arrow. [Installation for loading stopper ass’y] Step 1 Align the claw of loading stoppers ass’y with the slot of spindle base.
  • Page 31 SA-AK631GCP Step 4 Install the slide plate 2 to the mechanism base, and then match to the connection lever. Step 7 Move the slide plate 1 to forward fully. Step 5 Install the slide plate 1 to the mechanism base, and then match to the connection leve and align the trapezoid tooth Step 8 Install the rear lock.
  • Page 32 SA-AK631GCP Step 13 Install the gear holder, and then tighten the screw (a). Step 11 Remove the tray lock spring from hook,and then latch to the tray lock. Step 12 Install the UP/DOWN gear, change gear, change gear spring, pulley gear and belt in the order of (1) - (5).
  • Page 33 SA-AK631GCP 10.13.4. Replacement for the motor ass’y P.C.B. Step 7 Release the claw (B), and then remove the motor ass’y. [Notice for motor ass’y installation] 1. Locate the name plate of motor to the traverse ass’y. 2. Align the hole of motor with the ribs.

  • Page 34: Replacement For The Pinch Roller Ass And Head Block

    SA-AK631GCP 10.14. Replacement for the pinch roller ass’y 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 ·...

  • Page 35: Replacement For The Deck Motor Ass , Capstan Belt A, Capstan Belt B And Winding Belt

    SA-AK631GCP 10.15. Replacement for the Deck motor ass’y, capstan belt A, capstan belt B and 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 ·...
  • Page 36 SA-AK631GCP 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.
  • Page 37 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 ass’y pulley.

  • Page 38: Replacement For The Cassette Lid Ass

    SA-AK631GCP 10.16. Replacement for the cassette lid ass’y · Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet Step 1 Lift up the lever upward, open the cassette lid ass’y. (For DECK1 and DECK2) Step 2 Push up the cassette lid ass’y in the direction of arrow.

  • Page 39: Rectification For Tape Jam Problem

    SA-AK631GCP 10.17. Rectification for tape jam problem · Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet Step 1 If a cassette tape cannot be removed from the deck (the tape is caught by the capstan or pinch roller during playback or recording), rotate the flywheel F in the direction of the arrow to remove it.

  • Page 40: Checking For Major P.c.bs

    SA-AK631GCP 11 Checking for major P.C.Bs Note: 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.

  • Page 41: Checking Of Transformer P.c.b

    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.

  • Page 42: Checking Of Panel, Deck & Deck Mechanism P.c.b

    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.

  • Page 43: Checking Of Power P.c.b

    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.

  • Page 44: Self-Diagnostic Function

    SA-AK631GCP 12 Self-Diagnostic Function 12.1. Self-diagnostic display This 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.

  • Page 45: To Clear All Error Code

    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).
  • Page 46 SA-AK631GCP 12.8.3. Power supply related error detection Abnormal Items Error Display Method of Detection POWER AMP output abnormal During normal operation, if DCDET becomes ‘L’, normal POWER OFF process shall not be executed, PCNT shall be switched to ‘L’ immediately. GOODBYE shall not be displayed and the error display F61 will be displayed instead.

  • Page 47: Cd Test Mode Function

    SA-AK631GCP 13 CD Test Mode Function This CD test mode is provided to check CD unit without connecting to changer loading mechanism. This mode shall operate CD PLAY with CD unit being connected only and CD Automatic Alignment result is shown on FL display.

  • Page 48: Micon Rom Checksum And Version Display Mode

    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.

  • Page 49: Measurements And Adjustments

    SA-AK631GCP 14 Measurements and Adjustments 14.1. Cassette Deck Section standard value. Bias voltage for Deck 2 14±4mV (Normal) · Measurement Condition Erase voltage for Deck 2 80mV (Normal) − − − − Make sure head, capstan and press roller are clean.

  • Page 50: Alignment Points

    SA-AK631GCP 9. Set AM-SG to 520kHz. 10. Receive 520kHz in the unit. 11. Adjust L2602 (OSC) so that the EVM-DC value is with 1.1±0.5V. Fig.6 14.2.2. AM RF Adjustment 1. Connect the instrument as shown in Fig. 7. 2. Set the unit to AM mode.

  • Page 51: Block Diagram

    SA-AK631GCP 15 Block Diagram OPTICAL PICKUP SEMICONDUCTOR LASER Q7601 LASER POWER DRIVE PHOTO DETECTOR IC7003 AN8739SBTE2 FOCUS COIL/TRACKING COIL/ TRAVERSE MOTOR/ SPINDLE MOTOR DRIVE /RST RESET SIGNAL GENERATOR FOCUS FOCUS COIL COIL DRIVE TRACKING COIL TRACKING COIL DRIVE TRAVERSE M7301...
  • Page 52 SA-AK631GCP TO MAIN BLOCK X7201 NTEST IOMODE CD_RST NRST TXTCK MICRO COMPUTER TIMING GENERATOR DSL/PLL/VCO INTERFACE TXTD DQSY RFVDD (SBCK) EFM DEMODULATION SUBCODE (SUBC) SPINDLE VREF SYNC INTERPOLATION INTERFACE SERVO CIRC ECC (TXNCLDCK) CDROM ECC A, B, C, D, E, F...
  • Page 53 SA-AK631GCP AM ANT FM ANT Z2620 CF2601 CF2602 Q1 (RF AMP) Q2601 MIXER IF AMP D2602 L2602 L2601 BUFFER (FM) DECODER RM AMP BUFFER PHASE PILOT CANCEL STEREO LEVEL S-CURVE SWITCH AM/FM COMP BUFFER TUNING DRIVE PILOT IC2601 LA1833NMNTLM X2602...
  • Page 54 SA-AK631GCP FL6601 FROM POWER FL DISPLAY TRANSFORMER 50~84 7~14, 30~37 16~23, 1~4, 25~51 53~64 IC6601 C0HBB0000039 FL DRIVER C0GAM0000005 MOTOR DRIVE OUT1 OUT2 POWER SUPPLY CONTROL PLLDA Q2907 STAT SWITCH PUSH Q2936 CD MOTOR PUSH SUPPLY ST/DO SWITCH OPEN PLLCLK...
  • Page 55 SA-AK631GCP IC1001 AN7348S-E1 P.B EQ/REC AMP/ ALC/TPS AMP 24(23) (DECK 1) P.B. HEAD 1(2) 20(5) 22(3) 21(4) 17(8) (DECK 2) R/P HEAD 18(7) LOGIC L/H NOR/CrO & HI/LO LOGIC RIPPLE LOGIC REJECTION REC/PB Q6501, Q6502 JK6501 Q2978 SWITCH (DECK 2)
  • Page 56 SA-AK631GCP IC2804 7(8) B1(2) C0AABA000009 DUAL OP-AMP Q2181 (Q2281) 22(21) 2(6) 13(14) OUT1(2) JK2801 HPF FREQ E1(2) 1(7) FILTER 3(5) SWITCH Q2142 (Q2242) 9(10) CD SIGNAL C1(2) CONTROL IC2806 C0ABBB000244 DUAL OP-AMP 5(6) IC2803 A1(2) C1BB00000732 AUDIO SOUND PROCESSOR 32(31)
  • Page 57 SA-AK631GCP IC2810 C0ABBB000244 DUAL OP-AMP SUBW FILTER Q2553 Q2551 SUBWOOFER SW_LV1 LEVEL SWITCH CONTROL DC_DET Q2554 Q2552 SUBWOOFER SW_LV2 LEVEL SWITCH CONTROL HP_SW SYNC MUTE_H...
  • Page 58 SA-AK631GCP 16(15) 3(6) -IN2 1(2) OUT 2 1(2) HIGH CH (6 W) IC5801 JK5851 (JK5852) RSN315H42C-P POWER HIC 7(9) 13(12) OUT 1 1(2) -IN1 1(2) LOW CH (6 W) 4(2) +VCC 1(2) FILTER 5(1) -VCC 1(2) 4(1) 10(14) D5814 IN GND...

  • Page 59: Voltage Measurement

    SA-AK631GCP 16 Voltage Measurement...
  • Page 60 SA-AK631GCP...

  • Page 61: Schematic Diagram

    SA-AK631GCP 17 Schematic Diagram (All schematic diagrams may be modified at any time with the only manufacturer´s specified parts shown in the parts list. development of the new technology) Caution ! Note: IC, LSI and VLSI are sensitive to static electricity.

  • Page 62: A) Cd Servo Circuit

    SA-AK631GCP 17.1. (A) CD Servo Circuit SCHEMATIC DIAGRAM - 1 : +B SIGNAL LINE : CD-DA SIGNAL LINE OPTICAL PICKUP CIRCUIT CD SERVO CIRCUIT Q7601 LASER DIODE B1ADCF000001 R7601 C7601 C7670 C7204 C7203 LASER POWER DRIVE 6.3V33 6.3V220 Q7601 R7650...
  • Page 63 SA-AK631GCP SCHEMATIC DIAGRAM - 2 : +B SIGNAL LINE : CD SIGNAL LINE : CD-DA SIGNAL LINE CD SERVO CIRCUIT C7626 C7625 C7224 C7223 6.3V220 6.3V100 R7217 C7225 1000P C7226 R7211 1000P R7218 R7221 C7231 C7230 6.3V220 R7212 C7234 C7233...

  • Page 64: B) Main (Tuner) Circuit

    SA-AK631GCP 17.2. (B) Main (Tuner) Circuit SCHEMATIC DIAGRAM - 3 : +B SIGNAL LINE : FM SIGNAL LINE : AM SIGNAL LINE : FM/AM SIGNAL LINE : FM OSC SIGNAL LINE : AM OSC SIGNAL LINE MAIN (TUNER) CIRCUIT R2604...

  • Page 65: B) Main Circuit

    SA-AK631GCP 17.3. (B) Main Circuit SCHEMATIC DIAGRAM - 4 : PLAYBACK SIGNAL LINE : AUX SIGNAL LINE : +B SIGNAL LINE : -B SIGNAL LINE : RECORD SIGNAL LINE : MAIN SIGNAL LINE MAIN CIRCUIT Q2980 Q2978 B1GDCFJJ0047 B1GDCFJJ0047 DECK MOTOR SWITCH...

  • Page 66: Main Circuit

    SA-AK631GCP SCHEMATIC DIAGRAM - 5 : CD SIGNAL LINE : +B SIGNAL LINE PANEL CIRCUIT : -B SIGNAL LINE (CN6601) ON : MAIN SIGNAL LINE SCHEMATIC DIAGRAM-10 MAIN CIRCUIT CN2806 36 35 34 33 32 31 30 29 28 27 26 25...
  • Page 67 SA-AK631GCP SCHEMATIC DIAGRAM - 6 : -B SIGNAL LINE : +B SIGNAL LINE TO FAN UNIT MAIN CIRCUIT CN2810 R2595 R2591 R2338 R2414 R2420 D2332 330K B0ADCC000002 C2415 R2415 R2337 R2413 C2334 R2333 C2332 470K 0.22 R2331 R2419 R2412 5.6K...
  • Page 68 SA-AK631GCP SCHEMATIC DIAGRAM - 7 : +B SIGNAL LINE MAIN CIRCUIT VREF+ 64 63 R2827 R2830 R2831 100K MCLK MCLK RESTSW /RESTSW R2834 CHG_HLF CHG_HLF DCDET CHG_CW CHG_CW DCDET PCONT CHG_CCW CHG_CCW PCONT/EFP_/CE CHG_SW1 CHG_SW1 CHG_SW2 CHG_SW2 CHG_PLR EE_DAT CHG_PLR...
  • Page 69 SA-AK631GCP SCHEMATIC DIAGRAM - 8 : +B SIGNAL LINE : AUX SIGNAL LINE : MAIN SIGNAL LINE : -B SIGNAL LINE : CD SIGNAL LINE : PLAYBACK SIGNAL LINE : RECORD SIGNAL LINE : FM/AM SIGNAL LINE MAIN CIRCUIT D2951...

  • Page 70: C) Panel Circuit

    SA-AK631GCP 17.4. (C) Panel Circuit SCHEMATIC DIAGRAM - 9 : +B SIGNAL LINE : MAIN SIGNAL LINE : -B SIGNAL LINE PANEL CIRCUIT SYS6V S6210 S6310 R6458 DECK1 ENTER 4.7K R6310 D6458 S6209 B3AAA00000583 S6309 POWER KEY3 TITLE SEARCH R6309 S6301 6.8K...

  • Page 71: Panel Circuit

    SA-AK631GCP SCHEMATIC DIAGRAM - 10 : +B SIGNAL LINE : -B SIGNAL LINE : MAIN SIGNAL LINE PANEL CIRCUIT MICSW L6502 R6506 C6505 R6503 2.2K C6510 0.047 50V1 R6501 R6509 C6509 C6506 C6501 0.01 C6503 0.01 50V1 C6504 0.047 L6501...

  • Page 72: D) Transformer Circuit

    SA-AK631GCP 17.5. (D) Transformer Circuit SCHEMATIC DIAGRAM - 11 : +B SIGNAL LINE : -B SIGNAL LINE TRANSFORMER CIRCUIT S5950 D5950-D5953, D5970-D5973 B0EAMM000038 VCC+ D5952 D5950 VCC- C5960 A: 240V D5972 D5970 250V 1.6A B: 120V POWER D5973 D5971 CIRCUIT...

  • Page 73: E) Cd Detect Circuit, (F) Spindle Position Circuit, (G) Cd Loading Circuit & (L) Sub-Power Circuit

    SA-AK631GCP 17.6. (E) CD Detect Circuit, (F) Spindle Position Circuit, (G) CD Loading Circuit & (L) Sub-Power Circuit SCHEMATIC DIAGRAM - 12 : +B SIGNAL LINE : -B SIGNAL LINE C0GAM0000005 MOTOR DRIVE 0.01 50V5.6P 100K CD DETECT B0BA4R600003 CIRCUIT...

  • Page 74: H) Power Circuit

    SA-AK631GCP 17.7. (H) Power Circuit SCHEMATIC DIAGRAM - 13 : -B SIGNAL LINE : MAIN SIGNAL LINE : +B SIGNAL LINE POWER CIRCUIT IC5801 IC5801 RSN315H42C-P POWER HIC A_GND -VCCM SUB-POWER RIGHT CIRCUIT CHANNEL AC_DET R5857 SPEAKER (H5004/W004) HIGH -VCC...

  • Page 75: I) Deck Circuit & (J) Deck Mechanism Circuit

    SA-AK631GCP 17.8. (I) Deck Circuit & (J) Deck Mechanism Circuit SCHEMATIC DIAGRAM -14 : +B SIGNAL LINE : PLAYBACK SIGNAL LINE : RECORD SIGNAL LINE DECK CIRCUIT C1038 R1055 C1057 220P C1034 2.2K 1000P 50V3.3 C1044 10V33 R1101 R1100 R1015 C1032 0.018...
  • Page 76 SA-AK631GCP SCHEMATIC DIAGRAM - 15 : PLAYBACK SIGNAL LINE : +B SIGNAL LINE : RECORD SIGNAL LINE MAIN CIRCUIT (CN2803) ON SCHEMATIC DIAGRAM-4 DECK CIRCUIT CN1001 14 13 12 11 10 R1098 R1060 R1057 2.2K R1097 R1091 R1092 W1002 R1049...

  • Page 77: Printed Circuit Board

    SA-AK631GCP 18 Printed Circuit Board Note: Circuit board diagrams may be modified at any time with the development of new technology. 18.1. (A) CD Servo P.C.B. CD SERVO P.C.B (REPX0443A) C7670 R7217 C7223 C7601 C7106 C7105 W7011 R7212 TP29 TP22...

  • Page 78: B) Main P.c.b

    SA-AK631GCP 18.2. (B) Main P.C.B. MAIN P.C.B (REPX0442P) CN2810 W2257 TO FAN R2940 W2258 CN2805 Q2706 W2259 R2709 D2705 Q2704 W2260 R2715 Q2705 W2261 Q2936 W2248 D2704 W2265 W2249 D2936 D2703 W2262 R2702 R2858 R2860 Q2701 W2250 Q2937 W2263 R2859...
  • Page 79 SA-AK631GCP W2257 Q2901 R2902 W2258 C2902 W2259 R2910 Q2902 W2515 W2260 W2261 D2901 W2265 CN2801 W2262 W2263 W2266 R2903 W2268 R2917 2814 D2904 W2267 R2918 W2208 W2269 W2905 Q2906 W2275 W2504 W2508 W2276 W2270 W2904 Q2907 W2277 R2929 C2999 W2271...

  • Page 80: C) Panel

    SA-AK631GCP 18.3. (C) Panel P.C.B. PANEL P.C.B (REPX0474E) SENSOR FL6601 W6991 49 50 W6992 C6631 C6623 C6481 Z6481 S6101 W6107 OPEN/CLOSE IC6601 J6481 W6005 C6635 W6006 R6102 S6102 S6110 S6309 R6111 S6107 TITLE LEFT SEARCH W6045 W6044 W6046 S6103 S6109...
  • Page 81 SA-AK631GCP 6601 CN6601 R6458 11 13 15 17 19 21 23 25 27 29 31 33 35 W6102 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 J6902 D6458 W6089 W6075 S6301 W6063 W6083...

  • Page 82: D) Transformer P.c.b

    SA-AK631GCP 18.4. (D) Transformer P.C.B. TRANSFORMER P.C.B (REPX0468H) CAUTION RISK OF ELECTRIC SHOCK AC VOLTAGE LINE. PLEASE DO NOT TOUCH THIS P.C.B 250V 3.15A T5951 C5962 SUB-TRANSFORMER R5957 Q5952 250V1.6A C5963 W5938 Q5953 RL5950 R5951 W5920 C5964 W5989 C5952 W5995...

  • Page 83: E) Cd Detect P.c.b., (F) Spindle Position P.c.b., (G) Cd

    SA-AK631GCP 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. CD DETECT P.C.B SPINDLE POSITION P.C.B (REP2578A-N) (REP2578A-N) LOAD CD LOADING P.C.B (REP2578A-N) OPEN PUSH PUSH TUNER PACK P.C.B (REP1999B)

  • Page 84: H) Power P.c.b. & (L) Sub-Power

    SA-AK631GCP 18.6. (H) Power P.C.B. & (L) Sub-Power P.C.B. POWER P.C.B (REPX0447D) H5950/W5950 Q5803 Q5804 Q5801 Q5802 W5872 IC5801 R5814 C5809 W5811 D5801 R5823 R5828 R5822 C5442 C5801 R5250 W5841 C5804 R5802 R5813 C5811 W5810 C5241 C5242 C5243 W5849 R5803...
  • Page 85 SA-AK631GCP IC5801 5841 C5442 C5801 R5250 W5845 C5241 C5243 C5242 C5441 W5856 JK5851 W5842 W5874 R5249 R5862 R5449 W5855 W5844 R5247 RIGHT W5847 W5848 2-LG C5240 CHANNEL D5802 W5843 SPEAKER W5839 C5443 W5854 W5838 4-HG J5254 C5249 R5450 W5837 R5452...

  • Page 86: I) Deck P.c.b. & (J) Deck Mechanism

    SA-AK631GCP 18.7. (I) Deck P.C.B. & (J) Deck Mechanism P.C.B. DECK P.C.B DECK MECHANISM P.C.B (REPX0331D) (REPX0321B) R1024 IC1004 C1006 C1009 R1027 CS1002 TP10 TO R/P HEAD Q1003 J1002 L1002 TP11 R1004 R1001 Q1007 W1002 C1002 C1026 J1003 MOTOR TP12...

  • Page 87: Wiring Connection Diagram

    SA-AK631GCP 19 Wiring Connection Diagram FM LOOP AM LOOP H5950/ W5950 JK2601 JK2801 CN5801 TUNER PACK To Fan CD LOADING P.C.B P.C.B CN2809 CN2810 SOLDER SIDE MAIN P.C.B SOLDER SIDE CN2805 CD DETECT P.C.B SOLDER SIDE POWER P.C.B 13 14...

  • Page 88: Illustration Of Ic , Transistors And Diodes

    SA-AK631GCP 20 Illustration of IC’s, Transistors and Diodes RSN315H42C-P (18P) C2CBJG000561 (100P) C0AABA000009 C1AA00000612 C0HBBB0000039 (64P) AN7348S-E1 (24P) MN6627953HB (80P) LA1833NMNTLM (24P) LC72131MDTRM (20P) C1BB00000732 (32P) AN8739SBTE2 CNB13030R2AU RSN35H2B-P (14P) C0GAM0000005 C0ABBB000244 B1BACG000023 B1BCCG000002 B1GACFLL0008 B1ACCF000094 2SB0709AHL B1GACFJJ0018 2SD0601AHL B1ACKD000005...

  • Page 89: Terminal Function Of Ic

    SA-AK631GCP 21 Terminal Function of IC’s 21.1. IC7002 (MN6627953HB) Servo Pin No. Mark Function AVDD2 Analog circuit power supply 2 processor/ Digital signal OUTL LCH output signal processor/ Digital filter/ D/A AVSS1 Audio output circuit GND 1 N.C. No Connection...

  • Page 90: Ic2801 (C2Cbjg000561) System Microprocessor

    SA-AK631GCP Pin No. Mark Function Pin No. Mark Function Motor driver (2) forward-action MUTE_H HIC Mute output MUTE_A Audio Mute Motor driver (3) reverse-action EE_CS/EFP_/EP EEPROM Chip Select output Crystal oscillating circuit input (f = EE_CLK EEPROM Clock 16.9344MHz) EE_DAT...
  • Page 91 SA-AK631GCP Pin No. Mark Function VREF Reference for A-D (5V) AVcc Analog Power Supply Input Demo Selector (H= default demo on, L= default demo off.)

  • Page 92: Troubleshooting Guide

    SA-AK631GCP 22 Troubleshooting Guide...

  • Page 93: Parts Location And Replacement Parts List

    SA-AK631GCP 23 Parts Location and 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.

  • Page 94: Deck Mechanism (Raa3412-S)

    SA-AK631GCP 23.1. Deck Mechanism (RAA3412-S) 23.1.1. Deck Mechanism Parts Location...
  • Page 95 SA-AK631GCP...

  • Page 96: Deck Mechanism Parts List

    SA-AK631GCP 23.1.2. Deck Mechanism Parts List Ref. No. Part No. Part Name & Description Remarks CASSETTE DECK RED0071 R/P HEAD BLOCK UNIT RED0072 P/B HEAD BLOCK UNIT RDG0300 REEL BASE GEAR RDG0301 WINDING RELAY GEAR RDK0026 MAIN GEAR RDR0029-3 RELAY PULLEY...

  • Page 97: Cd Loading Mechanism (Rd-Dac026-S)

    SA-AK631GCP 23.2. CD Loading Mechanism (RD-DAC026-S) 23.2.1. CD Loading Mechanism Parts Location...
  • Page 98 SA-AK631GCP...

  • Page 99: Cd Loading Mechanism Parts List

    SA-AK631GCP 23.2.2. CD Loading Mechanism Parts List Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks TRAVERSE DECK XTN2+6GFJ SCREW RMX0141 PUSH SPACER RML0517 TIMING LEVER RMQ0749 UPPER SPINDLE RML0516 PLUNGER LEVER...

  • Page 100: Cabinet

    SA-AK631GCP 23.3. Cabinet 23.3.1. Cabinet Parts Location...
  • Page 101 SA-AK631GCP...

  • Page 102: Electrical Parts List

    SA-AK631GCP 23.3.2. Cabinet Parts List Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks CABINET AND CHASSIS RKFX0126-1S CASS LID R RKMX0105-S TOP CABINET L6FALEFH0030 RMBX0036 CASS OPEN SPRING REEX0202 10P FFC (PANEL)
  • Page 103 SA-AK631GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks Q5954 B1BACD000018 TRANSISTOR D5980 B0EAKM000117 DIODE Q6411 B1ACKD000005 TRANSISTOR D5981 B0EAKM000117 DIODE Q6415 B1ACKD000005 TRANSISTOR D5988 B0EAKM000117 DIODE Q6421 B1GACFLL0008 TRANSISTOR...
  • Page 104 SA-AK631GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks CN5803 K1KA09A00227 9P CONNECTOR H5950 RJS1A5509 9P CABLE HOLDER CN5950 K1KA09A00227 9P CONNECTOR H6555 K1YZ09000002 WIRE HOLDER CN5951 K1KA09A00047 9P CONNECTOR...
  • Page 105 SA-AK631GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks W7019 ERJ3GEY0R00V CHIP JUMPER R1057 ERJ3GEYJ222V 2.2K 1/16W W7020 ERJ3GEY0R00V CHIP JUMPER R1060 ERJ3GEYJ391V 390 1/16W W7021 ERJ3GEY0R00V CHIP JUMPER R1084 ERJ3GEYJ222V 2.2K 1/16W...
  • Page 106 SA-AK631GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R2270 ERJ3GEYJ1R0V 1 1/16W R2558 ERJ3GEYJ332V 3.3K 1/16W R2271 ERJ3GEYJ332V 3.3K 1/16W R2559 ERJ3GEYJ183V 18K 1/16W R2281 ERJ3GEYJ332V 3.3K 1/16W R2560 ERJ3GEYJ332V 3.3K 1/16W...
  • Page 107 SA-AK631GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R2712 ERDS1FVJ220T 22 1/2W R2929 ERJ3GEYJ103V 10K 1/16W R2713 ERJ3GEYJ104V 100K 1/16W R2930 ERJ3GEYJ103V 10K 1/16W R2714 ERJ3GEYJ124V 120K 1/16W R2931...
  • Page 108 SA-AK631GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R5824 ERDS1FVJ2R2T 2.2 1/2W R6412 ERDS2TJ102T 1K 1/4W R5825 ERDS1FVJ2R2T 2.2 1/2W R6415 ERDS2TJ223T 22K 1/4W R5826 ERDS1FVJ2R2T 2.2 1/2W R6416...
  • Page 109 SA-AK631GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C1006 ECEA1HKA010B 1 50V C2202 ECJ1VB1C104K 0.1 16V C1007 F0A2A472A034 4700P 100V C2203 ECJ1VB1H102K 1000P 50V C1008 ECEA1HKA010B 1 50V C2206...
  • Page 110 SA-AK631GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C2586 ECJ1VB1H103K 0.01 50V C2856 ECJ1VB1C105K 1 16V C2587 ECJ1VB1H103K 0.01 50V C2857 ECEA1HKA2R2B 2.2 50V C2588 ECJ1VB1C104K 0.1 16V C2901 ECJ1VB1C104K 0.1 16V...

  • Page 111: Packing Materials & Accessories Parts List

    SA-AK631GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C5962 ECA1EM102B 1000 25V C7149 ECJ1VB1H392K 3900P 50V C5963 ECEA1VKA4R7B 4.7 35V C7155 ECJ1VB1C104K 0.1 16V C5964 F1B1H103A153 0.01 50V C7161 ECJ1VB1C104K 0.1 16V...

  • Page 112: Packaging

    SA-AK631GCP 23.6. Packaging PRT0503 S/J/N/A/E...

This manual is also suitable for:

Sb-ak630Sa-ak631Sb-wak630

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