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Panasonic SA-VK31GC Service Manual

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Specifications
n AMPLIFIER SECTION
PMPO
RMS power output
THD 10% both channels driven
1 kHz (Low channel)
10kHz (High channel)
Total Bi-Amp power
AUX
Input sensitivity
Input Impedance
Phone jack
Terminal
MIC jack
Sensitivity
Terminal
n FM TUNER SECTION
Frequency range
Sensitivity
S/N 26 dB
Antenna terminal(s)
n AM TUNER SECTION
Frequency range
Sensitivity
All manuals and user guides at all-guides.com
2500 W
75 W per channel (6 Ω)
75 W per channel (6 Ω)
150 W per channel
250 mV
13.3 kΩ
Stereo, 3.5 mm jack
0.7 mV, 680 Ω
Mono, 3.5 mm jack (2 system)
87.50 - 108.00 MHz (50 kHz steps)
2.5µV (IHF)
2.2 µV
75 Ω (unbalanced)
522 - 1629 kHz (9 kHz steps)
520 - 1630 kHz (10 kHz steps)
CD Stereo System
SA-VK31GC
SA-VK31GS
Colour
(S)... Silver Type
S/N 20 dB (at 999 kHz)
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 (TYPE I)
S/N
Wow and flutter
Fast forward and rewind time
n CD SECTION
Discs played [8 cm or 12 cm]
(1) CD- Audio (CD-DA)
(2) Video CD
(3) CD-R/RW (CD-DA, MP3 disc)
(4) MP3
Sampling frequency
Decoding
© 2004 Panasonic AVC Networks Singapore Pte.
Ltd. (RCB registration number: 197701580H) All
rights
reserved.
distribution is a violation of law.
ORDER NO. MD0405174C3
560 µV/m
4 track, 2 channel
Solid permalloy head
Double gap ferrite head
DC servo motor
AC bias 100 kHz
AC erase 100 kHz
4.8 cm/s
35 Hz - 14 kHz
50 dB (A weighted)
0.18 % (WRMS)
Approx. 120 seconds with
C-60 cassette tape
44.1 kHz
16 bit linear
Unauthorized
copying
and

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Summary of Contents for Panasonic SA-VK31GC

  • Page 1 (4) MP3 520 - 1630 kHz (10 kHz steps) Sampling frequency 44.1 kHz Sensitivity Decoding 16 bit linear © 2004 Panasonic AVC Networks Singapore Pte. Ltd. (RCB registration number: 197701580H) All rights reserved. Unauthorized copying distribution is a violation of law.

  • Page 2: Table Of Contents

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com Pickup Power consumption 251 W Beam source/wavelength Semiconductor laser/780 nm Dimensions (W x H x D) 250 x 330 x 358 mm Number of channels Stereo Mass 7.9kg Frequency response 20 Hz - 20 kHz (+1, -2 dB) Power consumption in standby mode: 0.85 W...
  • Page 3 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 18 Schematic Diagram 19.9. (M) VCD P.C.B. (Side A & B) 18.1. (A) CD Servo Circuit 20 Wiring Connection Diagram 18.2. (B) Tuner/Main Circuit 21 Illustration of IC 痴, Transistors and Diodes 18.3.

  • Page 4: Safety Precautions (For Gs Only)

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 1 Safety precautions (for GS only)

  • Page 5: Before Use (For Gc Only)

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 2 Before Use (For GC Only) 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 6: Prevention Of Electro Static Discharge (Esd) To

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 5 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 7: Handling Precautions For Traverse Deck

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 7 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.

  • Page 8: Precaution Of Laser Diode

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 8 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...

  • Page 9: Accessories

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 9 Accessories AC power supply cord (For GC only) AC power supply cord (For GS only) FM indoor antenna AM loop antenna Video connection cable Remote control transmitter...

  • Page 10: Operation Procedures

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 10 Operation Procedures...

  • Page 11: Operation Checks And Main Component Replacement

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 11 Operation Checks and Main Component Replacement Procedures “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: Disassembly Of Top Cabinet And Rear Panel

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 11.1. Disassembly of Top Cabinet and Rear Panel Step 1 Remove 3 screws each side and 5 screws at rear panel. Step 2 Lift up both sides of cabinet ass’y, push the cabinet ass’y toward the rear and remove the cabinet ass’y.
  • Page 13 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS [Open the disc tray manually (Using service tools)] Step 4 Release the 2 claws, and then remove the CD Lid. Step 5 Press the POWER button to turn the power on.

  • Page 14: Disassembly Of Cd Mechanism Unit

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com Step 3 Repeat Step 2 but rotate the gear tools in anti-clockwise direction. Step 4 The disc tray will be close. 11.2. Disassembly of CD Mechanism Unit · Follow the (Step 1) - (Step 3) of Item 11.1 - Disassembly of Top Cabinet and Rear Panel ·...

  • Page 15: Disassembly Main P.c.b., Transformer P.c.b. & Mp3

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 11.3. Disassembly Main P.C.B., Transformer P.C.B. & MP3 P.C.B. 11.3.1. Disassembly for the Main P.C.B. · Follow the (Step 1) - (Step 3) of Item 11.1 - Disassembly of Top Cabinet and Rear Panel ·...

  • Page 16: Disassembly Of Panel P.c.b. & Tact Switch

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com Step 2 Unsolder the terminals of Power Amp IC, transistor and replace the components. Step 3 Fix back the cutted portion with a screw as shown. Step 1 Break the joint with a metal cutter as shown below.

  • Page 17: Disassembly Of Deck Mechanism Unit & Deck P.c.b

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS Step 5 Disconnect connector CP600. Step 6 Pull out the volume knob. Step 7 Pull Panel P.C.B. forward. 11.5. Disassembly of Deck Mechanism Unit & Deck P.C.B. · Follow the (Step 1) - (Step 3) of Item 11.1 - Disassembly of Top Cabinet and Rear Panel ·...
  • Page 18 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com Step 4 With pressing the claw (A), rotate the hexagonal wrench clockwise. (The slide plate R moves for a little amount.) Step 5 Pressing the claw (B) in the direction of arrow (1), the connection lever moves in the direction of arrow (2).
  • Page 19 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS Note: Be careful not to lose the 3 floating spring because those will also be removed on removal of the traverse deck ass’y. · Installation of the CD Servo P.C.B. after replacement Step 1 Connect the FFC board.
  • Page 20 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com Step 1 Install the traverse deck ass’y to the timing lever. Step 2 Align the boss of traverse deck ass’y with the slot of traverse cam gear. Step 3 Force the claw of timing lever.
  • Page 21 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS Step 4 With lifting the claw in the direction of (1), draw the CD Step 8 Release the both claws, and then draw the disc tray. Detect P.C.B. in the direction of arrow (2).
  • Page 22 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 11.6.3. Disassembly and reassembly for mechanism base drive unit Step 1 Remove 3 screws. Step 2 Holding the drive rack not to move, install the disc tray. Step 2 Release the claw, and then remove the gear holder.
  • Page 23 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 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.
  • Page 24 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 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 25 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 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 26 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 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 27 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 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.
  • Page 28 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 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 29 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS Step 14 Install the tray base, traverse ass’y, mechanism cover and upper plate. [Operation check after servicing] Check the proper operation of following items with gear and hexagonal screwdriver. 1. Open/close of tray base.

  • Page 30: Disassembly Deck Mechanism

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 11.7. Disassembly Deck Mechanism 11.7.1. Replacement for the pinch roller ass’y and head block · Follow the (Step 1) - (Step 2) of Item 11.1 - Disassembly of Top Cabinet and Rear Panel ·...
  • Page 31 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS Step 3 Remove 2 screws. 11.7.2. Replacement for the Deck motor ass’y, capstan belt A, capstan belt B and winding belt · Follow the (Step 1) - (Step 2) of Item 11.1 - Disassembly of Top Cabinet and Rear Panel ·...
  • Page 32 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 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 33 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 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 34: Replacement For The Cassette Lid Ass 馳

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 11.8. Replacement for the cassette 11.9. Measure for tape trouble lid ass’y · Follow the (Step 1) - (Step 2) of Item 11.1 - Disassembly of Top Cabinet and Rear Panel ·...

  • Page 35: Service Position

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 12 Service Position Note: For the disassembling procedure, see Section 11. 12.1. Checking the Main P.C.B., Power P.C.B., Transformer P.C.B. and Voltage Selector P.C.B. 1. Disassembly of Top Cabinet and Rear Panel.

  • Page 36: Checking The Panel P.c.b., Tact Switch P.c.b., Deck

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 12.2. Checking the Panel P.C.B., Tact Switch P.C.B., Deck P.C.B. & Deck Mechanism P.C.B. 1. Disassembly of Top Cabinet and Rear Panel. 2. Disassembly of CD Lid. 3. Disassembly of CD Mechanism Unit.

  • Page 37: Description Of Error Code

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 13 Description of Error Code 13.1. Abnormality Detection for DECK Mechanism Error Error Display Problem condition MODE SW abnormal Normal operation during mecha transition, MODE SW abnormal is memorized. The content of abnormality can be confirmed in the abnormal detection mode explained in the later section.

  • Page 38: Self-Diagnostic Function

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 14 Self-Diagnostic Function 14.1. Self-diagnostic display This unit is equipped with a self-diagnostic display function which, if a problem occurs, will display an error code corresponding to the problem. Use this function when performing maintenance on the unit.

  • Page 39: Cd Mechanism Test

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 14.4. CD Mechanism Test (F15, F26, F16, F17, F27, F28, F29, H15) 1. Press “CD”. 2. Press “OPEN/CLOSE (1)” and place a CD. 3. Press “OPEN/CLOSE (1)” to close the tray.
  • Page 40 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com and CLVS status shall be shown as below: During the above display, executing CD PLAY will display auto adjustment result for CD PLAY mode.

  • Page 41: Measurements And Adjustments

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 16 Measurements and Adjustments 16.1. Cassette Deck Section 16.1.2. Tape Speed Adjustment (Deck 1/2) · Measurement Condition 1. Set the tape edit button to “NORMAL” position. − − − − Reverse-mode selector switch: 2.

  • Page 42: Tuner Section

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 16.1.4. Bias Frequency Adjustment (Deck 1/2) 1. Set the unit to “AUX” position. 2. Insert the Normal blank tape (QZZCRA) into DECK 2 and set the unit to “REC” mode (l use “REC/STOP” key).

  • Page 43: Alignment Points

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 16.3. Alignment Points 16.3.1. Cassette Deck Section 16.3.2. Adjustment Point...

  • Page 44: Block Diagram

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 17 Block Diagram OPTICAL PICKUP SEMICONDUCTOR LASER ENV(3TOUT) Q7601 LASER POWER /RFDET /RFDET DRIVE IC7001 AN22004A-NF SERVO AMP FEOUT PHOTO DETECTOR TEOUT IC7003 AN8739SBTE2 FOCUS COIL/TRACKING COIL/ TRAVERSE MOTOR/ SPINDLE MOTOR DRIVE...
  • Page 45 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS TO MAIN BLOCK IC7002 MN662790RSC SERVO PROCESSOR/ DIGITAL SIGNAL PROCESSOR/ DIGITAL FILTER/ D/A CONVERTER CLVS BLKCK BLKCK OUTL /CLDCK SBCK SUBC OUTR DEMPH SSEL SQCK SQCK SUBQ SUBQ FLAG IPFLAG...
  • Page 46 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com AM ANT FM ANT CF1201 CF1202 Q1101 Q1 (RF AMP) Z1101 FM IF AMP MIXER COIL COIL BUFFER (FM) DECODER RM AMP PHASE PILOT BUFFER CANCEL LEVEL S-CURVE STEREO SWITCH...
  • Page 47 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS IC2360 C0ABBB000126 OP-AMP 5(3) 7(1) VCD SIGNAL 6(2) X2350 48(45) 47(46) SW2800 AUX03 PAL/NTSC SW JK2800 L2350 VIDEO VDAC IC2350 C1AB00001855 RST# VCD AUDIO/ VIDEO 8,81,83, 85,93,95, DECODER 97,99 DSC_D0~7...
  • Page 48 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com C0GAM0000005 MOTOR DRIVE 13~15, 17~21 D0~7 OUT1 /RESET OUT2 IC2120 C3FBJC000057 FLASH ROM 2~12, 23,25~30 A0~17 Q2924 RAS# CD MOTOR SUPPLY SWITCH IC2100 CASH# C3ABMG000113 16M DRAM CASL# Q2923 18~21,...
  • Page 49 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS IC1001 AN7348S-E1 P.B. EQ/REC AMP/ ALC/TPS AMP 24(23) (DECK 1) Q1014(Q1015) P.B. HEAD 1(2) 20(5) BUFFER 22(3) 21(4) 17(8) (DECK 2) R/P HEAD 18(7) NOR/CrO & HI/LO LOGIC Q1012 Q1020...
  • Page 50 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 4(39) IN B1(2) IC2901 C0AABB000117 HEADPHONE AMP 3(40) 19(24) 3(5) 1(7) VCD SIGNAL IN A1(2) OUT1(2) Q2101(Q2701) 5(38) D2101 IN C1(2) (D2701) IC2900 CONTROL C1BB00000747 AUDIO SOUND PROCESSOR Q2107 Q2102...
  • Page 51 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 3(6) OUT2 1(2) HIGH CH (6W) Q2105(Q2705) JK5951 (JK5952) 16(15) HPF FREQ -IN2 1(2) 7(9) FILTER AMP SWITCH OUT1 1(2) LOW CH (6W) AC DET IC5801 RSN315H42B-P POWER HIC Q2104(Q2704)

  • Page 52: Schematic Diagram

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 18 Schematic Diagram (All schematic diagrams may be modified at any time with the repair. development of the new technology) · Cover the parts boxes made of plastics with aluminium foil.

  • Page 53: A) Cd Servo Circuit

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 18.1. (A) CD Servo Circuit SCHEMATIC DIAGRAM - 1 : CD-DA SIGNAL LINE CD SERVO CIRCUIT : +B SIGNAL LINE OPTICAL PICKUP CIRCUIT R7601 C7103 Q7601 W7036 6.3V100 B1ADCF000001 Q7601...
  • Page 54 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM - 2 : CD-DA SIGNAL LINE CD SERVO CIRCUIT : +B SIGNAL LINE R7221 R7255 R7216 5.6K R7254 W7018 C7231 C7232 C7233 6.3V220 6.3V220 C7230 W7002 C7223 C7216 LDSW 6.3V220...

  • Page 55: B) Tuner/Main Circuit

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 18.2. (B) Tuner/Main Circuit SCHEMATIC DIAGRAM - 3 : +B SIGNAL LINE : FM SIGNAL LINE : AM SIGNAL LINE TUNER/MAIN CIRCUIT : FM/AM SIGNAL LINE : FM OSC SIGNAL LINE...

  • Page 56: B) Main Circuit

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 18.3. (B) Main Circuit SCHEMATIC DIAGRAM - 4 : -B SIGNAL LINE MAIN CIRCUIT : +B SIGNAL LINE : MAIN SIGNAL LINE R2940 R2941 R2942 R2943 VREF+ CHG_CW CHG_CW CHG_HALF...
  • Page 57 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS SCHEMATIC DIAGRAM - 5 : VCD AUDIO SIGNAL LINE : PLAYBACK SIGNAL LINE : AUX SIGNAL LINE TUNER/MAIN CIRCUIT : RECORD SIGNAL LINE : MIC SIGNAL LINE (1A) ON : -B SIGNAL LINE...
  • Page 58 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM - 6 : AUX SIGNAL LINE : -B SIGNAL LINE : VCD VIDEO SIGNAL LINE MAIN CIRCUIT : +B SIGNAL LINE : MAIN SIGNAL LINE C2745 16V10 LINE_R...
  • Page 59 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS SCHEMATIC DIAGRAM - 7 : -B SIGNAL LINE : PLAYBACK SIGNAL LINE : MIC SIGNAL LINE MAIN CIRCUIT : +B SIGNAL LINE : RECORD SIGNAL LINE : MAIN SIGNAL LINE...
  • Page 60 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM - 8 : VCD AUDIO SIGNAL LINE MAIN CIRCUIT : +B SIGNAL LINE : VCD VIDEO SIGNAL LINE VIDEO_OUT VIDEO_OUT L2850 J0JCC0000120 R2961 DGND 100K L2851 C2827 J0JCC0000120 6.3V470P...
  • Page 61 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS SCHEMATIC DIAGRAM - 9 MAIN CIRCUIT : +B SIGNAL LINE R2815 RESTSW DSA_STRB DRIVER_MUTE CLOSE_SW C2803 OPEN_SW 470P R2827 OPEN DC_DET BLKCK CLOSE BLKCK /DISC /MCS IC2801 R2810 /CDRST EE_CLK...

  • Page 62: C) Panel Circuit & (D) Tact Switch Circuit

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 18.4. (C) Panel Circuit & (D) Tact Switch Circuit SCHEMATIC DIAGRAM - 10 : MIC SIGNAL LINE PANEL CIRCUIT : MAIN SIGNAL LINE : +B SIGNAL LINE C672 0.01 C671 0.022...
  • Page 63 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS SCHEMATIC DIAGRAM - 11 PANEL CIRCUIT : +B SIGNAL LINE R681 R621 4.7K C636 C644 0.01 R600 4.7K SW5V R623 R601 R602 R603 R604 R605 4.7K 1.2K 1.8K 2.2K R622 4.7K...
  • Page 64 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM - 12 : -B SIGNAL LINE PANEL CIRCUIT : +B SIGNAL LINE R656 R657 FL600 A2BD00000061 FL DISPLAY 1 2 3 4 5 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 41 42 43 44 45 46 47 48 49 50 51 52 53...
  • Page 65 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS SCHEMATIC DIAGRAM - 13 : -B SIGNAL LINE : MIC SIGNAL LINE PANEL CIRCUIT : +B SIGNAL LINE : MAIN SIGNAL LINE Q604 Q603 D613 B1ACCF000063 B1ACCF000063 B0BA5R600016 TRANSFORMER VREF SUPPLY SWITCH...

  • Page 66: E) Deck Circuit & (F) Deck Mechanism Circuit

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 18.5. (E) Deck Circuit & (F) Deck Mechanism Circuit SCHEMATIC DIAGRAM - 14 : +B SIGNAL LINE : TAPE PLAYBACK SIGNAL LINE DECK CIRCUIT : TAPE RECORD SIGNAL LINE R1038...
  • Page 67 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS SCHEMATIC DIAGRAM - 15 : +B SIGNAL LINE MAIN CIRCUIT (CN2904) ON : TAPE PLAYBACK SIGNAL LINE SCHEMATIC DIAGRAM - 7 DECK CIRCUIT : TAPE RECORD SIGNAL LINE CN1001 C1054 50V3.3...

  • Page 68: G) Power Circuit

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 18.6. (G) Power Circuit SCHEMATIC DIAGRAM - 16 : +B SIGNAL LINE POWER CIRCUIT : -B SIGNAL LINE : MAIN SIGNAL LINE IC5801 IC5801 RSN315H42B-P POWER HIC L5201, 5202, 5401, 5402...
  • Page 69 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS SCHEMATIC DIAGRAM - 17 : +B SIGNAL LINE POWER CIRCUIT : -B SIGNAL LINE : MAIN SIGNAL LINE L CH R CH R5854 R5855 C5244 JK5951 C5245 C5445 0.047 D5814 0.047...

  • Page 70: Loading Circuit

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 18.7. (H) Transformer Circuit, (I) Voltage Selector Circuit, (J) CD Detect circuit, (K) Spindle Position Circuit & (L) CD Loading Circuit SCHEMATIC DIAGRAM - 18 VOLTAGE SELECTOR CIRCUIT : -B SIGNAL LINE...

  • Page 71: M) Vcd Module Circuit

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 18.8. (M) VCD Module Circuit SCHEMATIC DIAGRAM - 19 VCD MODULE CIRCUIT : +B SIGNAL LINE R2120 IC2120 C3FBJC000052 FLASH ROM R2122 L2308 J0JCC0000119 R2303 4.7K 64 63 L2309 J0JCC0000119...
  • Page 72 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM - 20 : VCD AUDIO SIGNAL LINE VCD MODULE CIRCUIT : +B SIGNAL LINE : VCD VIDEO SIGNAL LINE L2311 J0JCC0000119 L2350 G1C2R7K00005 C2360 C2368 C2367 R2360 470P...
  • Page 73 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS SCHEMATIC DIAGRAM - 21 : VCD AUDIO SIGNAL LINE VCD MODULE CIRCUIT : +B SIGNAL LINE : VCD VIDEO SIGNAL LINE D5V2 D5V2 R2701 R2702 R2703 VIDEO_OUT 4.7K 4.7K 4.7K...

  • Page 74: Printed Circuit Board

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 19 Printed Circuit Board Note: Circuit board diagrams may be modified at any time with the development of new technology. 19.1. (A) CD Servo P.C.B. (Side A & B) CD SERVO P.C.B (REPX0437A)...GS (REPX0437B)...GC...
  • Page 75 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS CD SERVO P.C.B (REPX0437A)...GS (REPX0437B)...GC (SIDE B)

  • Page 76: Bmain P.c.b

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 19.2. (B) Main P.C.B. MAIN P.C.B (REPX0439A)...GC (REPX0439C)...GS W2700 W2129 L2854 W2116 W2130 X2801 C2801 SW2800 IC2801 PAL/NTSC W2136 W2156 R2827 W2160 D2811 C2817 Q2814 Q2970 Q2974 Q2971 C2824 R2823...
  • Page 77 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS W2129 L2854 W2116 W2130 R2807 X2801 C2801 R2808 R2809 R2841 R2846 R2836 R2843 R2837 R2810 R2838 R2844 R2840 R2845 R2839 R2842 W2105 IC2801 W2106 W2102 W2136 W2991 W2104 R2827 W2160...

  • Page 78: C) Panel P.c.b

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 19.3. (C) Panel P.C.B. PANEL P.C.B (REPX0382C) S604 J600 OPEN/CLOSE S605 S606 FL600 L610 C661 C641 S607 1 2 3 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 41 42 43 44 45 46 47 48 49 50 51 52 5...
  • Page 79 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS D600 S601 POWER CP601 J601 SENSOR J620 J616 C658 J688 J686 J610 C642 D614 J612 4 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53...

  • Page 80: D) Tact Switch P.c.b

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 19.4. (D) Tact Switch P.C.B. TACT SWITCH P.C.B (REPX0382C) S904 S901 S903 R901 R902 CD PLAY S902 S905 S910 TUNER STOP DISPLAY VR600 R910 S906 S909 DECK2 OPEN R909 DECK1 OPEN...

  • Page 81: E) Deck P.c.b. & (F) Deck Mechanism P.c.b

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 19.5. (E) Deck P.C.B. & (F) Deck Mechanism P.C.B. DECK P.C.B. DECK MECHANISM P.C.B. (REPX0331A) (REPX0321B) IC1004 Q1001 C1006 R1006 C1009 R1005 C1003 J1000 CS1002 TP10 J1002 L1002 TP11 Q1007...

  • Page 82: G) Power P.c.b

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 19.6. (G) Power P.C.B. POWER P.C.B (REPX0440A) IC5801 JK5951 Q5804 11 12 13 14 15 16 17 18 D5801 W5870 R5828 W5808 C580 W5869 C5811 R582 W5830 C5805 D5802 W5825...
  • Page 83 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS H5950/W5950 W5809 FP5833 Q5804 R5823 R5814 R5813 D5801 R5828 C5809 C5804 C5806 R5858 C5811 W5835 R5825 W5834 C5805 R5817 R5826 W5846 W5864 5802 R5834 Q5806 R5827 R5818 W5804 R5812 R5803...

  • Page 84: H) Transformer P.c.b. & (I) Voltage Selector P.c.b

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 19.7. (H) Transformer P.C.B. & (I) Voltage Selector P.C.B. TRANSFORMER P.C.B (REPX0327G) T951 (SUB-TRANSFORMER) Q952 C963 R957 F1 T3.15AL C962 Q953 C954 J920 R951 J918 C964 Q954 C952 T950 (POWER TRANSFORMER)
  • Page 85 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 27G) (BLACK) T951 (SUB-TRANSFORMER) F1 T3.15AL JK950 J989 J988 AC IN T950 (POWER TRANSFORMER) 110V J990 127V 220~230V J987 240V 50/60Hz J912 (ORANGE) (RED) RL950 (VIOLET) (BLUE) D965 (BROWN) SECONDARY...
  • Page 86 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 19.8. (J) CD Detect P.C.B., (K) Spindle Position P.C.B., (L) CD Loading P.C.B. & (N) Tuner Pack P.C.B. CD LOADING P.C.B (REP2578A-N) 2 3 4 5 6 7 8 9 10...

  • Page 87: M) Vcd P.c.b. (Side A & B)

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 19.9. (M) VCD P.C.B. (Side A & B) VCD P.C.B (REPX0343B) C2400 C2401 CN2000 C2369 C2403 C2162 IC2700 C2201 C2203 C2200 C2364 C2361 R2358 C2366 C2301 IC2120 X2350 C2304 L2359...

  • Page 88: Wiring Connection Diagram

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 20 Wiring Connection Diagram CD LOADING VOLTAGE P.C.B. SELECTOR P.C.B. CN2000 20 ...1 SOLDER SIDE SOLDER SIDE 14 ..2 (VIOLET) 1.
  • Page 89 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS H950/ W950 1 ..9 JK5951 HIGH CHANNEL SPEAKERS POWER P.C.B SOLDER SIDE LOW CHANNEL SPEAKERS JK5952 CN5800 CN5801 12 ....1 12 .

  • Page 90: Illustration Of Ic 痴, Transistors And Diodes

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 21 Illustration of IC’s, Transistors and Diodes C0GAM0000005 (10p) C1BB00000086 (18p) C0AABB000117 C3FBJC000057 MN662790RSC (80p) C1BB00000574 (16p) MN101C30AEA (64p) C1BB00000747 (42p) C1AB00001854 (100p) C1BB00000716 (16p) C1AB00001855 (100p) LA1833NMNTLM (24p) C2BBGF000511 (100p)

  • Page 91: Terminal Function Of Ic 痴

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 22 Terminal Function of IC’s 22.1. IC7001 (AN22004A-NF) Servo Pin No. Mark Function /TLOCK Tracking servo feeding signal Amplifier output (“L” : Feed) BLKCK Sub-code block clock signal output Pin No.

  • Page 92: Ic7003 (An8739Sbte2) Focus Coil/ Tracking Coil

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com Pin No. Mark Function Pin No. Mark Function PLL extraction clock output (fPCK Motor driver (1) input = 4.321 MHz during normal PVCC1 N.C. playback) PGND1 Power supply (1) for driver...

  • Page 93: Ic600 (C2Bbgf000511) Microprocessor

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS Pin No. Mark Function Pin No. Mark Function RESTSW CD pickup head limit switch CHG_PLGR Changer Plunger Output input CHG_SW2 CD Changer Switch 2 Input DRIVER_MUTE Not used (GND) CHG_SW1...

  • Page 94: Troubleshooting Guide

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 23 Troubleshooting Guide...

  • Page 95: Parts Location And Replacement Parts List

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 24 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 96: Deck Mechanism (Raa3412-S)

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 24.1. Deck Mechanism (RAA3412-S) 24.1.1. Deck Mechanism Parts Location...
  • Page 97 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS...
  • Page 98 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 24.1.2. 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...

  • Page 99: Cd Loading Mechanism (Rd-Dac026-S)

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 24.2. CD Loading Mechanism (RD-DAC026-S) 24.2.1. CD Loading Mechanism Parts Location...
  • Page 100 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com...
  • Page 101 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 24.2.2. CD Loading Mechanism Parts List Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks TRAVERSE DECK RMS0632 TRAVERSE PIN XTN2+6G...

  • Page 102: Cabinet

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com 24.3. Cabinet 24.3.1. Cabinet Parts Location...
  • Page 103 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS...
  • Page 104 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com...

  • Page 105: Electrical Parts List

    All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS 24.3.2. Cabinet Parts List Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks CABINET AND CHASSIS RGWX0080-S VOLUME KNOB RHD30004-2S SCREW...
  • Page 106 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks Q950 B1BACD000017 TRANSISTOR SVC211SPA-AL DIODE Q951 2SB621ARSTA TRANSISTOR D600 SLI325URCT31 DIODE Q952...
  • Page 107 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks RLQZPR47KT-Y COIL S601 EVQ21405R SW POWER L600 RLQB3R3KT-1Y COIL S602 EVQ21405R SW DECK 1/2...
  • Page 108 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks X601 RSXZ4M19D01T CERAMIC OSCILLATOR ERDS2TJ272T 2.7K 1/4W X602 H0A327200073 CERAMIC OSCILLATOR ERDS2TJ684T...
  • Page 109 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R674 ERDS2TJ223T 22K 1/4W R970 ERDS2TJ681T 680 1/4W R675 ERDS2TJ472T 4.7K 1/4W...
  • Page 110 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R1113 ERJ3GEYJ103V 10K 1/16W R2140 ERJ3GEYJ472V 4.7K 1/16W R1114 D0GB562JA002 5.6K 1/16W...
  • Page 111 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R2714 ERJ3GEYJ102V 1K 1/16W R2834 D0GB101JA002 100 1/16W R2715 ERJ3GEYJ473V 47K 1/16W...
  • Page 112 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R5245 ERDS2TJ332T 3.3K 1/4W R7212 D0GB271JA002 270 1/16W R5246 ERDS2TJ153T 15K 1/4W...
  • Page 113 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C642 ECEA1VKA220B 22 35V C1014 ECJ1VB1H102K 1000P 50V C644 F1D1H1040002 0.1 50V...
  • Page 114 SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C1133 ECJ1VC1H270J 27P 50V C2304 ECEV1CA100SR 10 16V C1134 ECJ1VC1H270J 27P 50V...
  • Page 115 All manuals and user guides at all-guides.com SA-VK31GC / SA-VK31GS Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C2742 ECJ1VC1H101K 100P 50V C5247 F1D1H473A012 0.047 50V C2743 ECJ1VB1H681K 680P 50V...

  • Page 116: Packing Materials & Accessories Parts List

    SA-VK31GC / SA-VK31GS All manuals and user guides at all-guides.com Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks W7033 ERJ3GEY0R00V 0 1/16W W7036 ERJ3GEY0R00V 0 1/16W W7034 ERJ3GEY0R00V 0 1/16W...

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