Panasonic SA-AK230GCP Service Manual
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Panasonic SA-AK230GCP Service Manual

Cd stereo system
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Specifications

n AMPLIFIER SECTION
RMS output power
THD 10%, both channels driven
1 kHz
Total RMS power
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
Terminal
n CASSETTE DECK SECTION
100 W per channel (5 Ω)
200 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
Stereo, 3.5 mm jack
SA-AK230GCP
Colour
(S)... Silver Type
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
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 discs)
(3) MP3
Bit rate
MP3
Sampling frequency
MP3
CD
Decoding
Digital filter
© 2004 Matsushita Electric Industrial Co. Ltd.. All
rights
reserved.
distribution is a violation of law.
ORDER NO. MD0412597C3
CD Stereo System
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
8 fs
and

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Summary of Contents for Panasonic SA-AK230GCP

  • Page 1: Specifications

    ORDER NO. MD0412597C3 CD Stereo System SA-AK230GCP Colour (S)... Silver Type Specifications n AMPLIFIER SECTION Track system 4 track, 2 channel RMS output power Heads THD 10%, both channels driven Record/playback Solid permalloy head 1 kHz 100 W per channel (5 Ω)

  • Page 2: Table Of Contents

    SA-AK23 0GCP D/A converter MASH (1 bit DAC) Mass 6.9 kg Pickup Operating temperature range +5 to +35°C Wavelength 780 nm Operating humidity range 5 to 90% RH (no condensation) Beam Source Semiconductor laser n SYSTEM Audio output (Disc) SC-AK230 (GCP) Music center: SA-AK230 (GCP) Number of channels 2 (Stereo) (FL,FR)
  • Page 3 SA-AK23 0GCP 18 Printed Circuit Board 21.1. IC7002 (MN6627953HB) Servo processor/ Digital signal 18.1. (A) CD Servo P.C.B. processor/ Digital filter/ D/A converter 18.2. (B) Main P.C.B. 21.2. IC7003 (AN8739SBTE2) Focus coil/ Tracking coil/ 18.3. (C) Panel P.C.B. Traverse motor/ Spindle motor drive 18.4.

  • Page 4: Before Use

    SA-AK23 0GCP 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: Handling The Lead-Free Solder

    SA-AK23 0GCP 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 to damage an ES device).

  • Page 6: Handling Precautions For Traverse Deck

    SA-AK23 0GCP 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-AK23 0GCP 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-AK23 0GCP 8 Accessories Remote Control FM Antenna AC Cord AM Loop Antenna AC Plug Adaptor...

  • Page 9: Operation Procedures

    SA-AK23 0GCP 9 Operation Procedures...
  • Page 10 SA-AK23 0GCP...

  • Page 11: Disassembly And Assembly Of Main Component

    SA-AK23 0GCP 10 Disassembly and Assembly of Main Component “ATTENTION SERVICER” Some chassis components may have sharp edges. Be careful when disassemblin g 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-AK23 0GCP 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.

  • Page 13: Disassembly Of Top Cabinet

    SA-AK23 0GCP 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. 10.4.
  • Page 14 SA-AK23 0GCP 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-AK23 0GCP 10.5. Disassembly of Rear Panel · Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet Step 1 Remove 8 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-AK23 0GCP 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 Transformer P.c.b

    SA-AK23 0GCP · Replacement of the Power Amplifier IC/ Voltage Regulator Step 1 Remove 2 screws fixed to the Power Amplifier IC and 1 Step 3 Unsolder the terminals of Power Amp IC, transistor and screw to Voltage Regulator. replace the components. Step 4 Fix back the cut portion with a screw as shown.

  • Page 18: Disassembly Of Front Panel Unit

    SA-AK23 0GCP 10.10. 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 ·...

  • Page 19: Cd Mechanism Main Component Replacement Procedures

    SA-AK23 0GCP Step 7 Unsolder the motor terminals. Step 8 Remove Deck Mechanism P.C.B. 10.12. 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 ·...
  • Page 20 SA-AK23 0GCP Step 6 Lift up the traverse deck ass’y. Step 10 Remove the FFC board from the connector, and then remove the CD Servo P.C.B. Step 7 Remove the traverse deck ass’y from the timing lever. Caution: When removing or inserting the traverse deck avoid touching the OPU lens and pressing onto the turntable.
  • Page 21 SA-AK23 0GCP Note: Step 1 Install the traverse deck ass’y to the timing lever. Be careful not to lose the 3 floating spring because those will Step 2 Align the boss of traverse deck ass’y with the slot of also be removed on removal of the traverse deck ass’y. traverse cam gear.
  • Page 22 SA-AK23 0GCP Step 5 With pressing the claw (B) in the direction of arrow (1), force the connection lever in the direction of arrow (2). 10.12.2. Replacement for the Disc Tray Step 1 Remove 4 screws. Step 2 Remove the upper plate. Step 3 Remove 3 screws.
  • Page 23 SA-AK23 0GCP 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 24 SA-AK23 0GCP 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. 10.12.3. Disassembly and reassembly for mechanism base drive unit Step 1 Remove 3 screws.
  • Page 25 SA-AK23 0GCP 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. Step 8 Release the claw, and then remove the rear lock.
  • Page 26 SA-AK23 0GCP 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 27 SA-AK23 0GCP 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. Step 6 Remove the cushion spring.
  • Page 28 SA-AK23 0GCP 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 29 SA-AK23 0GCP 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 30 SA-AK23 0GCP 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 31 SA-AK23 0GCP 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). Step 14 Install the tray base, traverse ass’y, mechanism cover and upper plate.
  • Page 32 SA-AK23 0GCP 10.12.4. 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. Step 1 Install the belt temporarily.

  • Page 33: Replacement For The Pinch Roller Ass And Head Block

    SA-AK23 0GCP 10.13. 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 34: Replacement For The Deck Motor Ass , Capstan Belt A, Capstan Belt B And Winding Belt

    SA-AK23 0GCP 10.14. 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 35 SA-AK23 0GCP 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 36 SA-AK23 0GCP 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 37: Replacement For The Cassette Lid Ass

    SA-AK23 0GCP 10.15. 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 38: Rectification For Tape Jam Problem

    SA-AK23 0GCP 10.16. 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 39: Checking For Major P.c.bs

    SA-AK23 0GCP 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. and Power P.C.B.) can be carried out using below procedures. For the disassemblin g procedures, refer to Section 10. 11.1.

  • Page 40: Checking Of Transformer P.c.b

    SA-AK23 0GCP 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 41: Checking Of Panel, Deck & Deck Mechanism P.c.b

    SA-AK23 0GCP 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.

  • Page 42: Checking Of Power P.c.b

    SA-AK23 0GCP 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.

  • Page 43: Self-Diagnostic Function

    SA-AK23 0GCP 12 Self-Diagnostic Function 12.1. Self-diagnostic display This unit is equipped with a self-diagnost ic 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 44: To Clear All Error Code

    SA-AK23 0GCP 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. ·...
  • Page 45 SA-AK23 0GCP 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.

  • Page 46: Cd Test Mode Function

    SA-AK23 0GCP 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. 13.1.

  • Page 47: Micon Rom Checksum And Version Display Mode

    SA-AK23 0GCP · 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.

  • Page 48: Measurements And Adjustments

    SA-AK23 0GCP 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 49: Alignment Points

    SA-AK23 0GCP 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. 3.

  • Page 50: Block Diagram

    SA-AK23 0GCP 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 TRVP MOTOR...
  • Page 51 SA-AK23 0GCP 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) VREF SPINDLE SYNC INTERPOLATION INTERFACE SERVO CIRC ECC (TXNCLDCK) CDROM ECC A, B, C, D, E, F 30~35 A,B,C,D,E,F FLAG...
  • Page 52 SA-AK23 0GCP FM ANT Z2620 AM ANT CF2601 CF2602 Q2601 Q1 (RF AMP) MIXER IF AMP BUFFER D2602 L2602 L2601 (FM) DECODER RM AMP BUFFER PHASE PILOT CANCEL STEREO LEVEL S-CURVE SWITCH AM/FM COMP BUFFER TUNING DRIVE PILOT IC2601 X2602 LA1833NMNTLM Z2602 FM/AM IF AMP,...
  • Page 53 SA-AK23 0GCP FL6601 FROM POWER FL DISPLAY TRANSFORMER 21, 23, 24, 3, 5~10, 12, 13, 26~40 15, 16, 18, 19 11~14, 16~29 1, 2, 30~40 IC6601 C0HBB0000044 FL DRIVER C0GAM0000005 MOTOR DRIVE OUT1 OUT2 POWER SUPPLY CONTROL PLLDA Q2907 STAT SWITCH PUSH Q2936...
  • Page 54 SA-AK23 0GCP 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 Q2978 REC:ON/OFF CONTROL/ SWITCH (DECK 2) ERASE HEAD L1002 BIAS OSC...
  • Page 55 SA-AK23 0GCP IC2804 7(8) B1(2) C0AABA000009 DUAL OP-AMP 22(21) 2(6) OUT1(2) 1(7) FILTER 3(5) 5(6) A1(2) FILTER 2(4) IC2803 SEL1(2) C1BB00000732 AUDIO SOUND 32(31) PROCESSOR REC1(2) HP_L(R) 13(14) JK2801 E1(2) 9(10) CD SIGNAL C1(2) Q2571 MUTING SWITCH Q2701, Q2704~Q2706 SWITCH, FREQUENCY D2811 D2901...
  • Page 56 SA-AK23 0GCP JK5952 10(14) 4(1) -IN_L(R) OUT_L(R) LOW CH (6 W) IC5802 RSN35H2B-P +VCC POWER HIC 11(13) +IN_L(R) -VCC AC DET LATCH FILTER IN GND OUT GND -VCCM D5814 FILTER FILTER Q5802, Q5805 Q5812, Q5813 VOLTAGE SUPPLY/ DC_DET DC DETECT CURRENT CONTROL SWITCH SWITCH...

  • Page 57: Voltage Measurement

    SA-AK23 0GCP 16 Voltage Measurement...
  • Page 58 SA-AK23 0GCP...

  • Page 59: Schematic Diagram

    SA-AK23 0GCP 17 Schematic Diagram (All schematic diagrams may be modified at any time with the development of the new technology) Note: : Push switch : Push switch : Open switch : CD switch : Load switch S951 : Mode switch S952 : Half switch S971...

  • Page 60: A) Cd Servo Circuit

    SA-AK23 0GCP 17.1. (A) CD Servo Circuit SCHEMATIC DIAGRAM - 1 : +B SIGNAL LINE : CD-DA SIGNAL LINE OPTICAL PICKUP CIRCUIT CD SERVO CIRCUIT Q7601 CP701 R7601 B1ADCF000001 C7670 C7203 LASER DIODE C7204 C7601 LASER POWER DRIVE 6.3V220 6.3V33 Q7601 R7650 LD GND...
  • Page 61 SA-AK23 0GCP SCHEMATIC DIAGRAM - 2 : +B SIGNAL LINE : CD-DA SIGNAL LINE : CD 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 C7232 16V10...

  • Page 62: B) Main (Tuner) Circuit

    SA-AK23 0GCP 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 Q2606 TUNER PACK CIRCUIT...

  • Page 63: B) Main Circuit

    SA-AK23 0GCP 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 B1GDCFJJ0023 B1GDCFJJ0023 DECK MOTOR SWITCH CR02 SWITCH...

  • Page 64: Main Circuit

    SA-AK23 0GCP SCHEMATIC DIAGRAM - 5 : CD SIGNAL LINE : +B SIGNAL LINE PANEL CIRCUIT : -B SIGNAL LINE (CN6601) ON : MAIN SIGNAL LINE SCHEMA TIC DIAGRAM-9 MAIN CIRCUIT CN2806 CN2806 30 29 28 27 26 25 15 14 13 12 11 10 C2753 C2751 C2999...
  • Page 65 SA-AK23 0GCP SCHEMATIC DIAGRAM - 6 : +B SIGNAL LINE MAIN CIRCUIT VREF+ 64 63 R2831 MCLK MCLK RESTSW /RESTSW CHG_HLF CHG_HLF CHG_CW R2834 /DCDET CHG_CW DCDET CHG_CCW PCONT CHG_CCW PCONT/EFP_/CE CHG_SW1 CHG_SW1 CHG_SW2 CHG_SW2 CHG_PLR EE_DAT CHG_PLR EE_DAT EE_CLK CHG_AD2 R2856 CHG_AD2...
  • Page 66 SA-AK23 0GCP SCHEMATIC DIAGRAM - 7 : +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 B0BC7R500001 C2952...

  • Page 67: C) Panel Circuit

    SA-AK23 0GCP 17.4. (C) Panel Circuit SCHEMATIC DIAGRAM - 8 : +B SIGNAL LINE : MAIN SIGNAL LINE : -B SIGNAL LINE PANEL CIRCUIT SYS6V S6210 R6458 DECK1 4.7K D6458 S6209 B3AAA00000583 POWER KEY3 S6301 R6399 S6208 OPEN/CLOSE TAPE VREF+ VR6491 R6199 EVEKE2F3524M...

  • Page 68: Panel Circuit

    SA-AK23 0GCP SCHEMATIC DIAGRAM - 9 : +B SIGNAL LINE : -B SIGNAL LINE : MAIN SIGNAL LINE PANEL CIRCUIT FL6601 A2BD00000111 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 C6631 35V22 C6632...

  • Page 69: D) Transformer Circuit, (E) Cd Detect Circuit, (F) Spindle Position Circuit & (G) Cd Loading Circuit

    SA-AK23 0GCP 17.5. (D) Transformer Circuit, (E) CD Detect Circuit, (F) Spindle Position Circuit & (G) CD Loading Circuit SCHEMATIC DIAGRAM - 10 : +B SIGNAL LINE : -B SIGNAL LINE TRANSFORMER CIRCUIT S5950 VOLTAGE D5950-D5953 SELECTOR B0EAMM000038 VCC+ D5950 D5952 VCC- 250V 1.6A...

  • Page 70: H) Power Circuit

    SA-AK23 0GCP 17.6. (H) Power Circuit SCHEMATIC DIAGRAM - 11 : -B SIGNAL LINE : MAIN SIGNAL LINE : +B SIGNAL LINE POWER CIRCUIT IC5802 IC5802 RSN35H2B-P POWER HIC C5521 100V10 R5450 330K D5814 C5443 B0AACK000004 100V10 C5441 C5243 R5445 C5838 R5853 5.6K...

  • Page 71: I) Deck Circuit & (J) Deck Mechanism Circuit

    SA-AK23 0GCP 17.7. (I) Deck Circuit & (J) Deck Mechanism Circuit SCHEMATIC DIAGRAM -12 : +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 72 SA-AK23 0GCP SCHEMATIC DIAGRAM - 13 : PLAYBACK SIGNAL LINE : +B SIGNAL LINE : RECORD SIGNAL LINE MAIN CIRCUIT (CN2803) ON SCHEMATIC DIAGRAM-4 DECK CIRCUIT CN1001 R1098 R1060 R1057 R1091 2.2K R1097 R1092 R1049 R1084 W1002 2.2K Q1017 B1AARC000002 C1049 3300P MOTOR SWITCH...

  • Page 73: Printed Circuit Board

    SA-AK23 0GCP 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 TP22 TP29 C7204 W7040...

  • Page 74: B) Main

    SA-AK23 0GCP 18.2. (B) Main P.C.B. MAIN P.C.B (REPX0442W) CN2810 W2257 TO FAN W2236 R2940 R290 W2258 CN2805 Q2706 W2259 R2709 D2705 Q2704 W2260 R2715 Q2705 W2261 W2248 Q2936 D2704 W2265 D2936 W2249 D2703 W2262 R2702 R2858 R2860 Q2701 W2250 Q2937 W2263 R2859...
  • Page 75 SA-AK23 0GCP W2257 Q2901 R2902 W2258 C2902 W2259 R2910 Q2902 W2515 W2260 D2901 W2261 W2265 CN2801 W2262 2860 W2263 W2266 R2903 W2268 R2917 D2904 2814 W2267 R2918 W2208 W2269 W2905 Q2906 W2275 W2504 W2508 W2276 W2270 W2904 Q2907 W2277 R2929 C2999 W2271 W2279...

  • Page 76: C) Panel

    SA-AK23 0GCP 18.3. (C) Panel P.C.B. PANEL P.C.B (REPX0441C) W6991 W6994 AK230 FL6601 C6631 W6100 C6623 C6481 W6005 S6101 Z6481 OPEN/CLOSE J6481 W6006 C6612 R6611 W6002 C6635 R6102 S6102 R6111 W6045 W6044 W6046 S6103 W6079 J6108 S6104 W6032 S6204 S6105 W6030 FF/UP S6203...
  • Page 77 SA-AK23 0GCP FL6601 CN6601 W6105 R6458 J6902 W6100 D6458 W6089 W6075 C6636 W6063 S6301 W6083 W6076 POWER W6062 IC6601 W6082 W6085 W6102 W6065 R6611 W6033 W6103 W6094 W6080 W6059 C6632 W6081 W6066 R6199 W6077 W6071 J6108 W6034 R6302 W6010 S6303 SSEQ D6457 W6049...

  • Page 78: D) Transformer

    SA-AK23 0GCP 18.4. (D) Transformer P.C.B. TRANSFORMER P.C.B (REPX0468D) CAUTION RISK OF ELECTRIC SHOCK AC VOLTAGE LINE. PLEASE DO NOT TOUCH THIS P.C.B 250V 1.25A T5951 C5962 SUB-TRANSFORMER R5957 Q5952 250V 1.6A C5963 W5938 RL5950 Q5953 W5918 JK5950 R5951 C5964 W5920 W5989 W5995...

  • Page 79: E) Cd Detect P.c.b., (F) Spindle Position P.c.b., (G) Cd

    SA-AK23 0GCP 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 LOADING P.C.B (REP2578A-N) OPEN PUSH PUSH CD DETECT P.C.B SPINDLE POSITION P.C.B (REP2578A-N) (REP2578A-N) LOAD TUNER PACK P.C.B (REP1999B)

  • Page 80: H) Power

    SA-AK23 0GCP 18.6. (H) Power P.C.B. POWER P.C.B (REPX0469K) H5950/W5950 Q5801 Q5802 Q5803 Q5804 W5809 R5814 R5823 R5813 D5801 R5828 C5804 C5809 C5806 C5811 FP5833 R5825 W5834 C5805 W5835 Q5806 W5836 R5826 W5846 W582 W5824 R5802 W5864 R5818 R5827 W5804 Q5814 R5834 R5812...
  • Page 81 SA-AK23 0GCP IC5802 W5870 W5869 R5453 W5881 R5450 R5253 D5802 W5825 W5824 5814 JK5952 R5446 W5803 Q5813 Q5812 1-LG 2-RG W5847 SPEAKER R5455 C5545 R5854 R5246 R5856 D5814 W5863 C5846 W5861 R5855 W5878 CN5800...

  • Page 82: I) Deck P.c.b. & (J) Deck Mechanism

    SA-AK23 0GCP 18.7. (I) Deck P.C.B. & (J) Deck Mechanism P.C.B. DECK P.C.B DECK MECHANISM P.C.B (REPX0331D) (REPX0321A) R1024 IC1004 C1006 C1009 R1027 CS1002 TP10 Q1003 J1002 L1002 TP11 R1004 R1001 Q1007 W1002 C1002 C1026 J1003 TP12 S951 C1021 C1020 C1011 Q1017 MODE...

  • Page 83: Wiring Connection Diagram

    SA-AK23 0GCP 19 Wiring Connection Diagram FM ANT AM ANT H5950/ W5950 JK2601 JK2801 TUNER PACK To Fan CD LOADING P.C.B P.C.B CN5801 CN2809 CN2810 SOLDER SIDE MAIN P.C.B SOLDER SIDE CN2805 CD DETECT P.C.B SOLDER SIDE 13 14 POWER P.C.B SOLDER SIDE CN2808 CN2801...

  • Page 84: Illustration Of Ic , Transistors And Diodes

    SA-AK23 0GCP 20 Illustration of IC’s, Transistors and Diodes C2CBJG000565 (100P) C0AABA000009 C1AA00000612 C0GAM0000005 C0HBB0000044 (48P) AN7348S-E1 (24P) MN6627953HB (80P) LA1833NMNTLM (24P) LC72131MDTRM (20P) C1BB00000732 (32P) RSN35H2B-P AN8739SBTE2 CNB13030R2AU B1BACG000023 2SB0709AHL B1BCCG000002 2SD0601AHL B1ADCF000001 B1ABCF000131 B1ABCE000016 B1GDCFJJ0023 B1GBCFJJ0051 B1GFGCAA0001 B1AAGC000007 B1AAKD000009 B1GACFGG0004 B1AARC000002...

  • Page 85: Terminal Function Of Ic

    SA-AK23 0GCP 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 converter AVDD1 Power supply 1 for analog...

  • Page 86: Ic2801 (C2Cbjg000565) System Microprocessor

    SA-AK23 0GCP Pin No. Mark Function Pin No. Mark Function Motor driver (2) forward- action MUTE_A Audio Mute output EE_CS/EFP_/EPM O EEPROM Chip Select Motor driver (3) reverse- action EE_CLK EEPROM Clock output EE_DAT I/O EEPROM Data Crystal oscillating circuit input (f = N.C.

  • Page 87: Troubleshooting Guide

    SA-AK23 0GCP 22 Troubleshooting Guide...

  • Page 88: Parts Location And Replacement Parts List

    SA-AK23 0GCP 23 Parts Location and Replacement Parts List Notes: · Important safety notice: Components identified by mark have special characteristic s 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.

  • Page 89: Deck Mechanism (Raa4502-S)

    SA-AK23 0GCP 23.1. Deck Mechanism (RAA4502-S) 23.1.1. Deck Mechanism Parts Location...
  • Page 90 SA-AK23 0GCP...

  • Page 91: Deck Mechanism Parts List

    SA-AK23 0GCP 23.1.2. Deck Mechanism Parts List Ref. No. Part No. Part Name & Description Remarks CASSETTE DECK RED0069 R/P HEAD BLOCK UNIT RED0070 P/B HEAD BLOCK UNIT RDG0300 REEL BASE GEAR RDG0301 WINDING RELAY GEAR RDK0026 MAIN GEAR RDV0033-4 WINDING BELT RDV0064 CAPSTAN BELT A...

  • Page 92: Cd Loading Mechanism (Rd-Dac026-S)

    SA-AK23 0GCP 23.2. CD Loading Mechanism (RD-DAC026-S) 23.2.1. CD Loading Mechanism Parts Location...
  • Page 93 SA-AK23 0GCP...

  • Page 94: Cd Loading Mechanism Parts List

    SA-AK23 0GCP 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+6G SCREW RMX0141 PUSH SPACER RML0517 TIMING LEVER RMQ0749 UPPER SPINDLE RML0516 PLUNGER LEVER RHM0001 MAGNET...

  • Page 95: Cabinet

    SA-AK23 0GCP 23.3. Cabinet 23.3.1. Cabinet Parts Location...
  • Page 96 SA-AK23 0GCP...

  • Page 97: Electrical Parts List

    SA-AK23 0GCP 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- S1J CASS LID (R) RKMX0105- S TOP CABINET L6FALEFH0030 RMBX0036 CASS OPEN SPRING REEX0202 10P FFC (PANEL) RMCX0021...
  • Page 98 SA-AK23 0GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks D1003 B0ACCK000005 DIODE S6209 EVQ21405R SW AUX D1004 B0BC3R700004 DIODE S6210 EVQ21405R SW DECK 1 D2601 B0BC5R000009 DIODE S6301 EVQ21405R SW POWER D2602 B0CDBB000015...
  • Page 99 SA-AK23 0GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks X7201 H2B169500002 RESONATOR W2926 ERJ3GEY0R00V CHIP JUMPER W2927 ERJ3GEY0R00V CHIP JUMPER DISPLAY TUBE W2928 ERJ3GEY0R00V CHIP JUMPER W2929 ERJ3GEY0R00V CHIP JUMPER FL6601 A2BD00000111 W2930...
  • Page 100 SA-AK23 0GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R1012 ERJ3GEYJ472V 4.7K 1/16W R2252 ERJ3GEY0R00V 0 1/16W R1013 ERJ3GEYJ472V 4.7K 1/16W R2254 ERJ3GEYJ104V 100K 1/16W R1014 ERJ3GEYJ472V 4.7K 1/16W R2266 ERJ3GEYJ330V 33 1/16W...
  • Page 101 SA-AK23 0GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R2646 ERJ3GEYJ104V 100K 1/16W R2918 ERJ3GEYJ103V 10K 1/16W R2651 ERJ3GEYJ820V 82 1/16W R2919 ERJ3GEYJ472V 4.7K 1/16W R2652 ERJ3GEY0R00V 0 1/16W R2920 ERJ3GEYJ472V 4.7K 1/16W...
  • Page 102 SA-AK23 0GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R5832 ERDS2TJ151T 150 1/4W R7218 ERJ3GEYJ102V 1K 1/16W R5834 D0C1330JA020 33 1W R7220 ERJ3GEYJ105V 1M 1/16W R5847 ERDS1FVJ220T 22 1/2W R7221 ERJ3GEYJ101V 100 1/16W...
  • Page 103 SA-AK23 0GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C1056 ECEA1CKA100B 10 16V C2604 ECJ1VB1H102K 1000P 50V C1057 ECJ1VB1H102K 1000P 50V C2606 ECJ1VB1H103K 0.01 50V C1058 ECJ1VB1H102K 1000P 50V C2607 ECJ1VB1E473K 0.047 25V...

  • Page 104: Packing Materials & Accessories Parts List

    SA-AK23 0GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C2906 ECJ1VB1H102K 1000P 50V C6551 F1D1E103A004 0.01 25V C2907 ECJ1VB1H471K 470P 50V C6552 F1D1E103A004 0.01 25V C2936 ECJ1VF1C474Z 0.47 16V C6553 F1D1E103A004 0.01 25V...

  • Page 105: Packaging

    SA-AK23 0GCP 23.6. Packaging PRT0412 D/S/J/N/A/E...

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