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Panasonic SA-AK230GC Service Manual
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Panasonic SA-AK230GC Service Manual

Panasonic SA-AK230GC Service Manual

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Specifications
n AMPLIFIER SECTION
RMS output power
THD 10%, both channels driven
1 kHz
Total RMS power
For GC only
PMPO
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
For GC only
For GN only
Sensitivity
S/N 20 dB (at 999 kHz)
Audio performance (Amplifier)
Input sensitivity/Input impedance
Aux
100 W per channel (5 Ω)
200 W
2000 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)
522 - 1629 kHz (9 kHz steps)
560 µV/m
250 mV,14.7 kΩ
SA-AK230GC
SA-AK230GN
Colour
(S)... Silver Type
Phone jack
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
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
© 2004 Matsushita Electric Industrial Co. Ltd.. All
rights
reserved.
distribution is a violation of law.
ORDER NO. MD0412577C3
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
Unauthorized
copying
4.8 cm/s
and

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Summary of Contents for Panasonic SA-AK230GC

  • Page 1 ORDER NO. MD0412577C3 CD Stereo System SA-AK230GC SA-AK230GN Colour (S)... Silver Type Specifications n AMPLIFIER SECTION Phone jack RMS output power Terminal Stereo, 3.5 mm jack THD 10%, both channels driven n CASSETTE DECK SECTION 1 kHz 100 W per channel (5 Ω)

  • Page 2: Table Of Contents

    SA-AK230GC / SA-AK230GN 44.1 kHz Dimensions (W x H x D) 250 x 330 x 341 mm Decoding 16 bit linear Mass 6.9 kg Digital filter 8 fs Operating temperature range +5 to +35°C D/A converter MASH (1 bit DAC)
  • Page 3 SA-AK230GC / SA-AK230GN 16.2. (B) Main (Tuner) Circuit 18 Wiring Connection Diagram 16.3. (B) Main Circuit 19 Illustration of IC 痴, Transistors and Diodes 16.4. (C) Panel Circuit 20 Terminal Function of IC 痴 16.5. (D) Transformer Circuit, (E) CD Detect Circuit, (F) Spindle 20.1.

  • Page 4: Before Repair And Adjustment

    SA-AK230GC / SA-AK230GN 1 Before Repair and Adjustment Disconnect AC power, discharge Power Supply Capacitors C5820 and C5840 through a 10Ω, 5W resistor to ground. DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.

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

    SA-AK230GC / SA-AK230GN 3 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-AK230GC / SA-AK230GN 5 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-AK230GC / SA-AK230GN 6 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-AK230GC / SA-AK230GN 7 Accessories Remote Control FM Antenna AC Cord (For GN only) AC Cord (For GC only) AM Loop Antenna...

  • Page 9: Operation Procedures

    SA-AK230GC / SA-AK230GN 8 Operation Procedures...
  • Page 10 SA-AK230GC / SA-AK230GN...

  • Page 11: Disassembly And Assembly Of Main Component

    SA-AK230GC / SA-AK230GN 9 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-AK230GC / SA-AK230GN 9.2. 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-AK230GC / SA-AK230GN 9.3. 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-AK230GC / SA-AK230GN 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-AK230GC / SA-AK230GN 9.5. Disassembly of Rear Panel · Follow the (Step 1) - (Step 2) of Item 9.3 - Disassembly of Top Cabinet Step 1 Remove 6 screws and disconnect wire CN2810 (Fan) at rear cabinet as shown. 9.6.

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

    SA-AK230GC / SA-AK230GN 9.7. Disassembly of Main P.C.B. · Follow the (Step 1) - (Step 2) of Item 9.3 - Disassembly of Top Cabinet · Follow the (Step 1) - (Step 6) of Item 9.4 - Disassembly of CD Lid ·...

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

    SA-AK230GC / SA-AK230GN · 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.

  • Page 18: Disassembly Of Front Panel Unit

    SA-AK230GC / SA-AK230GN 9.10. Disassembly of Front Panel Unit · Follow the (Step 1) - (Step 2) of Item 9.3 - Disassembly of Top Cabinet · Follow the (Step 1) - (Step 6) of Item 9.4 - Disassembly of CD Lid ·...

  • Page 19: Cd Mechanism Main Component Replacement Procedures

    SA-AK230GC / SA-AK230GN Step 7 Unsolder the motor terminals. Step 8 Remove Deck Mechanism P.C.B. 9.12. CD Mechanism Main Component Replacement Procedures · Follow the (Step 1) - (Step 2) of Item 9.3 - Disassembly of Top Cabinet · Follow the (Step 1) - (Step 6) of Item 9.4 - Disassembly of CD Lid ·...
  • Page 20 SA-AK230GC / SA-AK230GN 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-AK230GC / SA-AK230GN 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.
  • Page 22 SA-AK230GC / SA-AK230GN Step 5 With pressing the claw (B) in the direction of arrow (1), force the connection lever in the direction of arrow (2). 9.12.2. Replacement for the Disc Tray Step 1 Remove 4 screws. Step 2 Remove the upper plate.
  • Page 23 SA-AK230GC / SA-AK230GN 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-AK230GC / SA-AK230GN 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. 9.12.3. Disassembly and reassembly for mechanism base drive unit Step 1 Remove 3 screws.
  • Page 25 SA-AK230GC / SA-AK230GN 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 26 SA-AK230GC / SA-AK230GN 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-AK230GC / SA-AK230GN 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 28 SA-AK230GC / SA-AK230GN 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.
  • Page 29 SA-AK230GC / SA-AK230GN 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-AK230GC / SA-AK230GN 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-AK230GC / SA-AK230GN 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 32: Replacement For The Pinch Roller Ass 馳 And Head Block

    SA-AK230GC / SA-AK230GN 9.12.4. Replacement for the motor ass’y Step 1 Install the belt temporarily. NOTE: Take care not apply the grease to the belt. Step 6 Release the 2 claws (A), and then remove the Motor Step 2 Upset the CD loading unit.

  • Page 33: Replacement For The Deck Motor Ass 馳, Capstan Belt A, Capstan Belt B And Winding Belt

    SA-AK230GC / SA-AK230GN Step 1 Release the 2 claws, and then remove the pinch roller (R), (F). Step 2 Release the 2 claws, and then remove the head connector. Step 3 Remove 2 screws. 9.14. Replacement for the Deck motor ass’y, capstan belt A, capstan belt B and winding belt ·...
  • Page 34 SA-AK230GC / SA-AK230GN Step 5 Remove the flywheel R. Step 6 Release the claw of tape side, and then remove the winding lever and spring. Step 7 Remove the flywheel F. [Installation of the belt] Step 1 The boss and marking should be positioned Step 2 Put the winding belt on the pulley temporarily.
  • Page 35 SA-AK230GC / SA-AK230GN Step 7 Put the capstan belt A temporarily as shown below. Step 10 Remove 3 screws. Step 11 Put the capstan belt B as shown below. Step 8 Put the capstan belt B on the motor ass’y pulley.

  • Page 36: Replacement For The Cassette Lid Ass 馳

    SA-AK230GC / SA-AK230GN 9.15. Replacement for the cassette lid ass’y · Follow the (Step 1) - (Step 2) of Item 9.3 - 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 37: Rectification For Tape Jam Problem

    SA-AK230GC / SA-AK230GN 9.16. Rectification for tape jam problem · Follow the (Step 1) - (Step 2) of Item 9.3 - 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 38: Checking For Major P.c.bs

    SA-AK230GC / SA-AK230GN 10 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 disassembling procedures, refer to Section 9.

  • Page 39: Checking Of Transformer P.c.b

    SA-AK230GC / SA-AK230GN 10.2. 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 40: Checking Of Panel, Deck & Deck Mechanism P.c.b

    SA-AK230GC / SA-AK230GN 10.3. 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 41: Checking Of Power P.c.b

    SA-AK230GC / SA-AK230GN 10.4. 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 42: Self-Diagnostic Function

    SA-AK230GC / SA-AK230GN 11 Self-Diagnostic Function 11.1. 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. 11.2. How to enter the Self-Diagnostic Function 11.3.

  • Page 43: To Clear All Error Code

    SA-AK230GC / SA-AK230GN 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 44 SA-AK230GC / SA-AK230GN 11.8.3. 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’...

  • Page 45: Cd Test Mode Function

    SA-AK230GC / SA-AK230GN 12 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 46: Micon Rom Checksum And Version Display Mode

    SA-AK230GC / SA-AK230GN · 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 47: Measurements And Adjustments

    SA-AK230GC / SA-AK230GN 13 Measurements and Adjustments 13.1. 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 48: Alignment Points

    SA-AK230GC / SA-AK230GN 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 13.2.2. AM RF Adjustment 1. Connect the instrument as shown in Fig. 7.

  • Page 49: Block Diagram

    SA-AK230GC / SA-AK230GN 14 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...
  • Page 50 SA-AK230GC / SA-AK230GN 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) SYNC INTERPOLATION VREF SPINDLE INTERFACE SERVO CIRC ECC (TXNCLDCK) CDROM ECC A, B, C, D, E, F...
  • Page 51 SA-AK230GC / SA-AK230GN FM ANT Z2620 AM ANT CF2601 CF2602 Q1 (RF AMP) Q2601 MIXER IF AMP BUFFER D2602 L2602 L2601 (FM) DECODER RM AMP BUFFER PILOT PHASE CANCEL STEREO LEVEL S-CURVE SWITCH AM/FM COMP BUFFER TUNING DRIVE PILOT IC2601...
  • Page 52 SA-AK230GC / SA-AK230GN 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...
  • Page 53 SA-AK230GC / SA-AK230GN 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)
  • Page 54 SA-AK230GC / SA-AK230GN IC2804 7(8) B1(2) C0AABA000009 DUAL OP-AMP 22(21) 2(6) OUT1(2) 1(7) FILTER 3(5) 5(6) A1(2) 2(4) IC2803 FILTER 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...
  • Page 55 SA-AK230GC / SA-AK230GN 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...

  • Page 56: Voltage Measurement

    SA-AK230GC / SA-AK230GN 15 Voltage Measurement...
  • Page 57 SA-AK230GC / SA-AK230GN...

  • Page 58: Schematic Diagram

    SA-AK230GC / SA-AK230GN 16 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...

  • Page 59: A) Cd Servo Circuit

    SA-AK230GC / SA-AK230GN 16.1. (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...
  • Page 60 SA-AK230GC / SA-AK230GN 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...

  • Page 61: B) Main (Tuner) Circuit

    SA-AK230GC / SA-AK230GN 16.2. (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...

  • Page 62: B) Main Circuit

    SA-AK230GC / SA-AK230GN 16.3. (B) Main Circuit SCHEMATIC DIAGRAM - 4 : PLAYBACK SIGNAL LINE : AUX SIGNAL LINE : +B SIGNAL LINE : MAIN SIGNAL LINE : -B SIGNAL LINE : RECORD SIGNAL LINE MAIN CIRCUIT Q2980 Q2978 B1GDCFJJ0023...
  • Page 63 SA-AK230GC / SA-AK230GN 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 30 29 28 27 26 25 15 14 13 12 11 10...
  • Page 64 SA-AK230GC / SA-AK230GN SCHEMATIC DIAGRAM - 6 : +B SIGNAL LINE MAIN CIRCUIT VREF+ 64 63 GC ONLY GN ONLY R2831 R2832 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...
  • Page 65 SA-AK230GC / SA-AK230GN 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...

  • Page 66: C) Panel Circuit

    SA-AK230GC / SA-AK230GN 16.4. (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...
  • Page 67 SA-AK230GC / SA-AK230GN 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...

  • Page 68: D) Transformer Circuit, (E) Cd Detect Circuit, (F) Spindle Position Circuit & (G) Cd Loading Circuit

    SA-AK230GC / SA-AK230GN 16.5. (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 D5950-D5953 B0EAMM000038 VCC+ D5950 D5952 VCC-...

  • Page 69: H) Power Circuit

    SA-AK230GC / SA-AK230GN 16.6. (H) Power Circuit SCHEMATIC DIAGRAM - 11 : MAIN SIGNAL LINE : +B SIGNAL LINE : -B SIGNAL LINE POWER CIRCUIT IC5802 IC5802 RSN35H2B-P POWER HIC C5521 100V10 R5450 330K D5814 C5443 B0AACK000004 100V10 C5441 C5243...

  • Page 70: I) Deck Circuit & (J) Deck Mechanism Circuit

    SA-AK230GC / SA-AK230GN 16.7. (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...
  • Page 71 SA-AK230GC / SA-AK230GN 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...

  • Page 72: Printed Circuit Board

    SA-AK230GC / SA-AK230GN 17 Printed Circuit Board Note: Circuit board diagrams may be modified at any time with the development of new technology. 17.1. (A) CD Servo P.C.B. CD SERVO P.C.B (REPX0443A) C7670 R7217 C7223 C7601 C7106 C7105 W7011 R7212...

  • Page 73: B) Main

    SA-AK230GC / SA-AK230GN 17.2. (B) Main P.C.B. MAIN P.C.B (REPX0442R...GC) (REPX0442S...GN) CN2810 W2257 TO FAN W2236 R2940 W2258 CN2805 Q2706 W2259 R2709 D2705 Q2704 W2260 R2715 Q2705 W2261 Q2936 W2248 D2704 W2265 W2249 D2936 D2703 W2262 R2702 R2858 R2860 Q2701...
  • Page 74 SA-AK230GC / SA-AK230GN W2257 Q2901 R2902 W2258 C2902 W2259 R2910 Q2902 W2515 W2260 W2261 D2901 W2265 CN2801 W2262 R2860 W2263 R2859 W2266 R2903 W2268 R2917 D2904 C2814 W2267 R2918 W2208 W2269 W2905 Q2906 W2275 W2504 W2508 2255 W2276 2256 W2270...

  • Page 75: C) Panel

    SA-AK230GC / SA-AK230GN 17.3. (C) Panel P.C.B. PANEL P.C.B (REPX0441C) W6991 FL6601 AK230 C6631 W6996 W6100 C6623 C6481 W6005 Z6481 S6101 J6481 W6006 C6612 W6002 R6611 OPEN/ CLOSE C6635 R6102 S6102 R6111 W6045 W6044 W6046 S6103 W6079 J6108 S6104 W6032...
  • Page 76 SA-AK230GC / SA-AK230GN FL6601 CN6601 W6105 R6458 J6902 W6100 D6458 W6089 W6075 C6636 W6063 W6083 W6076 S6301 W6062 IC6601 W6082 W6085 W6102 W6065 R6611 W6033 POWER W6103 W6094 W6080 W6059 C6632 W6081 W6066 R6199 W6077 W6071 J6108 W6034 R6302 W6010...

  • Page 77: D) Transformer

    SA-AK230GC / SA-AK230GN 17.4. (D) Transformer P.C.B. TRANSFORMER P.C.B (REPX0468B) CAUTION RISK OF ELECTRIC SHOCK AC VOLTAGE LINE. PLEASE DO NOT TOUCH THIS P.C.B 250V 1.25A T5951 D5986 SUB-TRANSFORMER R5957 Q5952 C5963 C5971 W5938 RL5950 Q5953 JK5950 R5951 W5920 W5989...

  • Page 78: E) Cd Detect P.c.b., (F) Spindle Position P.c.b., (G) Cd

    SA-AK230GC / SA-AK230GN 17.5. (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 79: H) Power

    SA-AK230GC / SA-AK230GN 17.6. (H) Power P.C.B. POWER P.C.B (REPX0469H) 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...
  • Page 80 SA-AK230GC / SA-AK230GN IC5802 W5870 W5869 J5453 W5881 R5450 J5253 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 81: I) Deck P.c.b. & (J) Deck Mechanism

    SA-AK230GC / SA-AK230GN 17.7. (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...

  • Page 82: Wiring Connection Diagram

    SA-AK230GC / SA-AK230GN 18 Wiring Connection Diagram FM ANT AM ANT H5950/ W5950 JK2601 JK2801 To Fan CD LOADING P.C.B CN5801 CN2809 CN2810 TUNER PACK SOLDER SIDE P.C.B MAIN P.C.B SOLDER SIDE CN2805 CD DETECT P.C.B SOLDER SIDE 13 14 BLACK POWER P.C.B...

  • Page 83: Illustration Of Ic 痴, Transistors And Diodes

    SA-AK230GC / SA-AK230GN 19 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 (14P) AN8739SBTE2 CNB13030R2AU B1GFGCAA0001 2SB0709AHL 2SD0601AHL B1ADCF000001 B1ABCF000131 B1GDCFJJ0023 B1GBCFJJ0039 B1AAGC000007 B1BACD000017...

  • Page 84: Terminal Function Of Ic 痴

    SA-AK230GC / SA-AK230GN 20 Terminal Function of IC’s 20.1. 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.

  • Page 85: Ic2801 (C2Cbjg000565) System Microprocessor

    SA-AK230GC / SA-AK230GN Pin No. Mark Function Pin No. Mark Function Motor driver (2) forward-action output REG 1 Region Setting 1 (Tuner) Motor driver (3) reverse-action MUTE_H O HIC Mute output MUTE_A O Audio Mute Crystal oscillating circuit input (f = EE_CS/EFP_/EPM O EEPROM Chip Select 16.9344MHz)
  • Page 86 SA-AK230GC / SA-AK230GN Pin No. Mark Function PHOTO_2 Rotation Detection Signal (Deck AVss Analog Power Supply Input (Connect to GND) PHOTO_1 Rotation Detection Signal (Deck VREF Reference for A-D (5V) AVcc Analog Power Supply Input Demo Selector (H= default demo on, L=...

  • Page 87: Troubleshooting Guide

    SA-AK230GC / SA-AK230GN 21 Troubleshooting Guide...

  • Page 88: Parts Location And Replacement Parts List

    SA-AK230GC / SA-AK230GN 22 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 89: Deck Mechanism (Raa4502-S)

    SA-AK230GC / SA-AK230GN 22.1. Deck Mechanism (RAA4502-S) 22.1.1. Deck Mechanism Parts Location...
  • Page 90 SA-AK230GC / SA-AK230GN...
  • Page 91 SA-AK230GC / SA-AK230GN 22.1.2. 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...

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

    SA-AK230GC / SA-AK230GN 22.2. CD Loading Mechanism (RD-DAC026-S) 22.2.1. CD Loading Mechanism Parts Location...
  • Page 93 SA-AK230GC / SA-AK230GN...
  • Page 94 SA-AK230GC / SA-AK230GN 22.2.2. 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...

  • Page 95: Cabinet

    SA-AK230GC / SA-AK230GN 22.3. Cabinet 22.3.1. Cabinet Parts Location...
  • Page 96 SA-AK230GC / SA-AK230GN...

  • Page 97: Electrical Parts List

    SA-AK230GC / SA-AK230GN 22.3.2. Cabinet Parts List Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks CABINET AND CHASSIS RKFX0125-S1J CASS LID (L) RKFX0126-S1J CASS LID (R) 8025M12SND4 [M]GC RKMX0105-S TOP CABINET...
  • Page 98 SA-AK230GC / SA-AK230GN Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks D971 MA2C16500E DIODE S6209 EVQ21405R SW AUX D1003 B0ACCK000005 DIODE S6210 EVQ21405R SW DECK 1 D1004 B0BC3R700004 DIODE S6301...
  • Page 99 SA-AK230GC / SA-AK230GN Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks X7201 H2B169500002 RESONATOR W2929 ERJ3GEY0R00V CHIP JUMPER W7001 ERJ3GEY0R00V CHIP JUMPER DISPLAY TUBE W7002 ERJ3GEY0R00V CHIP JUMPER W7003 ERJ3GEY0R00V...
  • Page 100 SA-AK230GC / SA-AK230GN Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R1017 ERJ3GEYJ822V 8.2K 1/16W R2269 ERJ3GEYJ330V 33 1/16W R1018 ERJ3GEYJ392V 3.9K 1/16W R2270 ERJ3GEYJ1R0V 1 1/16W R1019 ERJ3GEYJ392V 3.9K 1/16W...
  • Page 101 SA-AK230GC / SA-AK230GN Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R2704 ERJ3GEY0R00V 0 1/16W R2922 ERJ3GEYJ103V 10K 1/16W R2705 ERJ3GEYJ222V 2.2K 1/16W R2923 ERJ3GEY0R00V 0 1/16W R2706 ERJ3GEYJ222V 2.2K 1/16W...
  • Page 102 SA-AK230GC / SA-AK230GN Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R5854 ERDS2TJ223T 22K 1/4W R7315 ERJ3GEYJ272V 2.7K 1/16W R5855 ERDS1FVJ100T 10 1/2W R7323 ERJ3GEYJ562V 5.6K 1/16W R5856 ERDS2TJ223T 22K 1/4W...
  • Page 103 SA-AK230GC / SA-AK230GN Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C2102 ECJ1VB1C104K 0.1 16V C2610 ECJ1VB1H103K 0.01 50V C2103 ECJ1VB1H102K 1000P 50V C2611 ECEA1HKA4R7B 4.7 50V C2106 ECJ1VB1H332K 3300P 50V...

  • Page 104: Packing Materials & Accessories Parts List

    SA-AK230GC / SA-AK230GN Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C2976 ECA1CM100B 10 16V C6602 ECBT1H102KB5 1000P 50V C2977 ECA1CM101B 100 16V C6603 ECBT1H101KB5 100P 50V C2998 ECJ1VB1C104K 0.1 16V...

  • Page 105: Packaging

    SA-AK230GC / SA-AK230GN 22.6. Packaging PRT0412 D/S/J/N/A/E...

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