Panasonic SA-VK31EE Service Manual
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Panasonic SA-VK31EE Service Manual

Panasonic SA-VK31EE Service Manual

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Specifications
n AMPLIFIER SECTION
RMS power output
THD 10% both channels driven
1 kHz (Low channel)
10 kHz (High channel)
Total Bi-Amp power
Phone jack
Terminal
Aux
Input sensitivity
Input Impedance
Mic jack
Sensitivity
Terminal
n FM TUNER SECTION
Frequency range
Sensitivity
S/N 26 dB
Antenna terminal(s)
n AM TUNER SECTION
Frequency range
75 W per channel (6 Ω)
75 W per channel (6 Ω)
150 W per channel
Stereo, 3.5 mm jack
250 mV
13.3 kΩ
0.7 mV, 680 Ω
Mono, 3.5 mm jack
(2 system)
87.50 - 108.00 MHz (50 kHz steps)
1.8 µV (IHF)
1.5 µV
75 Ω (unbalanced)
522 - 1629 kHz (9 kHz steps)
SA-VK31EE
Colour
(S)... Silver Type
Sensitivity
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
© 2004 Panasonic AVC Networks Singapore Pte.
Ltd. (RCB registration number: 197701580H) All
rights
reserved.
distribution is a violation of law.
ORDER NO. MD0405248C3
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
Unauthorized
copying
560 µV/m
4.8 cm/s
and

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Summary of Contents for Panasonic SA-VK31EE

  • Page 1 CD SECTION 75 Ω (unbalanced) Antenna terminal(s) n AM TUNER SECTION Frequency range 522 - 1629 kHz (9 kHz steps) © 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-VK31EE Discs played [8 cm or 12 cm] (1) CD-Audio (CD-DA) Bit rate 32 kbps - 320 kbps (2) Video CD Sampling frequency (3) CD-R/RW (CD-DA, Video CD, MP3 formatted disc) 32 kHz, 44.1 kHz, 48 kHz (4) MP3 Sampling frequency 44.1 kHz...
  • Page 3 SA-VK31EE 13.2. CD Automatically Adjustment result indication 17.7. (H) Transformer P.C.B. 14 Measurements and Adjustments 17.8. (J) CD Detect P.C.B., (K) Spindle Position P.C.B. & (L) CD 14.1. Cassette Deck Section Loading P.C.B. 14.2. Tuner Section 17.9. (M) VCD P.C.B. (Side A & B) 14.3.

  • Page 4: Before Repair And Adjustment

    SA-VK31EE 1 Before Repair and Adjustment Disconnect AC power, discharge Power Supply Capacitors C950, C5820 and C5820 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

    SA-VK31EE 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-VK31EE 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-VK31EE 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-VK31EE 7 Accessories AC power supply cord FM indoor antenna AM loop antenna Video connection cable Remote control transmitter...

  • Page 9: Operation Procedures

    SA-VK31EE 8 Operation Procedures...

  • Page 10: Operation Checks And Main Component Replacement

    SA-VK31EE 9 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 11: Disassembly Of Top Cabinet And Rear Panel

    SA-VK31EE 9.1. 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 12 SA-VK31EE Step 4 Release the 2 claws, and then remove the CD Lid. Step 5 Press the POWER button to turn the power on. Step 1 Insert the gear tool into the hole on the underside of CD chassis and then rotate in the direction of arrow. The disc tray will be open.

  • Page 13: Disassembly Of Cd Mechanism Unit

    SA-VK31EE Step 3 Repeat Step 2 but rotate the gear tools in anti-clockwise direction. Step 4 The disc tray will be close. 9.2. Disassembly of CD Mechanism Unit · Follow the (Step 1) - (Step 3) of Item 9.1 - Disassembly of Top Cabinet and Rear Panel ·...

  • Page 14: Disassembly Main P.c.b., Transformer P.c.b. & Mp3

    SA-VK31EE 9.3. Disassembly Main P.C.B., Transformer P.C.B. & MP3 P.C.B. 9.3.1. Disassembly for the Main P.C.B. · Follow the (Step 1) - (Step 3) of Item 9.1 - Disassembly of Top Cabinet and Rear Panel · Follow the (Step 1) - (Step 6) of Item 9.1.1 - Disassembly for CD Lid ·...

  • Page 15: Disassembly Of Panel P.c.b. & Tact Switch P.c.b

    SA-VK31EE 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. 9.4.

  • Page 16: Disassembly Of Deck Mechanism Unit & Deck P.c.b

    SA-VK31EE Step 4 Disconnect FFC Boards (CN951, CN2903, CN2902 & CN2904). · Disassembly of Tact Switch P.C.B. Step 5 Disconnect connector CP600. Step 6 Pull out the volume knob. Step 7 Pull Panel P.C.B. forward. 9.5. Disassembly of Deck Mechanism Unit & Deck P.C.B.
  • Page 17 SA-VK31EE 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 18 SA-VK31EE 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. Step 2 Install the CD servo P.C.B. in the traverse deck ass’y.
  • Page 19 SA-VK31EE 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. Step 5 With pressing the claw (B) in the direction of arrow (1), force the connection lever in the direction of arrow (2).
  • Page 20 SA-VK31EE 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). Step 5 Remove the mechanism cover.
  • Page 21 SA-VK31EE 9.6.3. 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. Step 3 Align the drive rack with the drive gear.
  • Page 22 SA-VK31EE 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 23 SA-VK31EE 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 24 SA-VK31EE 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 25 SA-VK31EE 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 10 Remove the lower spindle spring with tweezers.
  • Page 26 SA-VK31EE 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 27 SA-VK31EE 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 28 SA-VK31EE 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. 2. Moving the tray base to the stock side.

  • Page 29: Disassembly Deck Mechanism

    SA-VK31EE 9.7. Disassembly Deck Mechanism 9.7.1. Replacement for the pinch roller ass’y and head block · Follow the (Step 1) - (Step 2) of Item 9.1 - Disassembly of Top Cabinet and Rear Panel · Follow the (Step 1) - (Step 6) of Item 9.1.1 - Disassembly for CD Lid ·...
  • Page 30 SA-VK31EE Step 3 Remove 2 screws. 9.7.2. Replacement for the Deck motor ass’y, capstan belt A, capstan belt B and winding belt · Follow the (Step 1) - (Step 2) of Item 9.1 - Disassembly of Top Cabinet and Rear Panel ·...
  • Page 31 SA-VK31EE 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 32 SA-VK31EE 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. Step 12 Put the capstan belt A on the motor ass’y pulley.

  • Page 33: Replacement For The Cassette Lid Ass 馳

    SA-VK31EE 9.8. Replacement for the cassette 9.9. Measure for tape trouble lid ass’y · Follow the (Step 1) - (Step 2) of Item 9.1 - Disassembly of Top Cabinet and Rear Panel · Follow the (Step 1) - (Step 2) of Item 9.1 - Disassembly of...

  • Page 34: Service Position

    SA-VK31EE 10 Service Position Note: For the disassembling procedure, see Section 9. 10.1. Checking the Main P.C.B., Power P.C.B. & Transformer P.C.B. 1. Disassembly of Top Cabinet and Rear Panel. 2. Disassembly of CD Lid. 3. Disassembly of CD Mechanism Unit.

  • Page 35: Checking The Panel P.c.b., Tact Switch P.c.b., Deck P.c.b. & Deck Mechanism

    SA-VK31EE 10.2. 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. 4. Remove volume knob at front panel.

  • Page 36: Description Of Error Code

    SA-VK31EE 11 Description of Error Code 11.1. 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 37: Self-Diagnostic Function

    SA-VK31EE 12 Self-Diagnostic Function 12.1. 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. 12.2. How to enter the Self-Diagnostic Function 12.3.

  • Page 38: Cd Mechanism Test (F15, F26, F16, F17, F27, F28, F29, H15)

    SA-VK31EE 12.4. 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. 4. Press “OPEN/CLOSE (5)” and wait until the tray is open.
  • Page 39 SA-VK31EE 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 40: Measurements And Adjustments

    SA-VK31EE 14 Measurements and Adjustments 14.1. Cassette Deck Section 14.1.2. Tape Speed Adjustment (Deck 1/2) · Measurement Condition 1. Set the tape edit button to “NORMAL” position. − − − − Reverse-mode selector switch: 2. Insert the test tape (QZZCWAT) to DECK 2 and playback −...

  • Page 41: Tuner Section

    SA-VK31EE 14.1.4. 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). 3. Adjust L1002 so that the output frequency is within the standard value.

  • Page 42: Alignment Points

    SA-VK31EE 14.3. Alignment Points 14.3.1. Cassette Deck Section 14.3.2. Tuner Adjustment Point...

  • Page 43: Block Diagram

    SA-VK31EE 15 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 /RST RESET SIGNAL GENERATOR FOCUS FOCUS COIL...
  • Page 44 SA-VK31EE 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 DIGITAL AUDIO INTERFACE PLLF PLLF PLLF2 DIGITAL AUDIO INTERFACE...
  • Page 45 SA-VK31EE AM ANT FM ANT Z1120 CF1201 CF1202 Q1101,Q1102 (RF AMP) Z1101 FM IF AMP MIXER COIL COIL BUFFER (FM) DECODER RM AMP PHASE PILOT BUFFER CANCEL LEVEL S-CURVE STEREO SWITCH AM/FM BUFFER COMP TUNING DRIVE PILOT IC1101 X1102 LA1833NMNTLM...
  • Page 46 SA-VK31EE IC2360 C0ABBB000126 OP-AMP 5(3) 7(1) VCD SIGNAL 6(2) X2350 48(45) 47(46) SW2800 AUX03 PAL/NTSC SW L2350 JK2800 VDAC VIDEO IC2350 C1AB00001855 RST# VCD AUDIO/ VIDEO 8,81,83, 85,93,95, DECODER 97,99 DSC_D0~7 AUX13 86~89, 92,94, 96,98 32~39 BLKCK SUBQ 55~62 TDMFS(INPUT)
  • Page 47 SA-VK31EE 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# C3ABMG000160 16M DRAM CASL# Q2923 18~21, 24~28 A0~8 PLUNGER MOTOR SUPPLY CONTROL 2~5, POWER 7~10,...
  • Page 48 SA-VK31EE 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 LOGIC L/H (Q1013) (Q1021) MUTING MUTING SWITCH IC1004 C1AA00000612...
  • Page 49 SA-VK31EE 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 (Q2707) (Q2702) 8(35) REC1(2) MUTING MUTING SWITCH SWITCH IC2903...
  • Page 50 SA-VK31EE 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) 4(2) 13(12) +VCC 1(2) LPF FREQ -IN1 1(2) FILTER...

  • Page 51: Schematic Diagram

    SA-VK31EE 16 Schematic Diagram · Cover the parts boxes made of plastics with aluminium foil. (All schematic diagrams may be modified at any time with the development of the new technology) · Put a conductive mat on the work table.

  • Page 52: A) Cd Servo Circuit

    SA-VK31EE 16.1. (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 LASER POWER DRIVE C7104 R7152 R7650 W7046 R7151 0.47 4.7K...
  • Page 53 SA-VK31EE 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 680P +3.3V BCLK C7224 SRDATA BCLK LRCK...

  • Page 54: B) Tuner/Main Circuit

    SA-VK31EE 16.2. (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 : AM OSC SIGNAL LINE R1104 Q1106 Z1120...

  • Page 55: B) Main Circuit

    SA-VK31EE 16.3. (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 CHG_HALF CHG_CCW CHG_CCW R2944 CLAMP CHG_AD1 OPEN CHG_AD2 R2945...
  • Page 56 SA-VK31EE 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 : AM/FM SIGNAL LINE SCHEMATIC DIAGRAM - 3...
  • Page 57 SA-VK31EE 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 R2752 C2744 C2941 C2943 4.7K 16V10 0.22 0.22 C2739...
  • Page 58 SA-VK31EE SCHEMATIC DIAGRAM - 7 : -B SIGNAL LINE : PLAYBACK SIGNAL LINE : MIC SIGNAL LINE MAIN CIRCUIT : +B SIGNAL LINE : RECORD SIGNAL LINE : MAIN SIGNAL LINE Q2815 Q2814 KTA12710YTA KTC3199GRTA SWITCH SWITCH AGND RECL R2813...
  • Page 59 SA-VK31EE SCHEMATIC DIAGRAM - 8 : VCD AUDIO SIGNAL LINE MAIN CIRCUIT : +B SIGNAL LINE : VCD VIDEO SIGNAL LINE VIDEO_OUT VIDEO_OUT L2850 R2961 J0JCC0000120 DGND R2964 100K R2984 L2851 C2827 J0JCC0000120 6.3V470P GND1 R2985 C2826 16V330 +A9V LRCK_5V...
  • Page 60 SA-VK31EE 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 MN101C30AEB R2836 STAT EE_DATA MECHACON IC R2809 MDATA EE_CS...

  • Page 61: C) Panel Circuit & (D) Tact Switch Circuit

    SA-VK31EE 16.4. (C) Panel Circuit & (D) Tact Switch Circuit SCHEMATIC DIAGRAM - 10 : MIC SIGNAL LINE PANEL CIRCUIT : MAIN SIGNAL LINE : +B SIGNAL LINE C672 L634 0.01 J0JKB0000020 C671 0.022 MICSW Q606 KTC3199GRTA L605 Q900 JK600...
  • Page 62 SA-VK31EE 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 R617 4.7K R619 4.7K IC601 IC601 C1BB00000574 I/O EXPANDER...
  • Page 63 SA-VK31EE 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 64 SA-VK31EE SCHEMATIC DIAGRAM - 13 : -B SIGNAL LINE : MIC SIGNAL LINE PANEL CIRCUIT : MAIN SIGNAL LINE : +B SIGNAL LINE Q604 Q603 D613 B1ACCF000063 B1ACCF000063 B0BA5R600016 TRANSFORMER VREF SUPPLY SWITCH DECK SUPPLY SWITCH L601 Z600 CIRCUIT SYS6V...

  • Page 65: E) Deck Circuit & (F) Deck Mechanism Circuit

    SA-VK31EE 16.5. (E) Deck Circuit & (F) Deck Mechanism Circuit SCHEMATIC DIAGRAM - 14 : +B SIGNAL LINE : TAPE PLAYBACK SIGNAL LINE DECK CIRCUIT : TAPE RECORD SIGNAL LINE R1038 R1039 R1055 C1038 4.7K 2.2K 220P R1098 C1034 50V3.3...
  • Page 66 SA-VK31EE 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 R1060 C1064 50V3.3 R1095 R1091 Q1017 100K 2.2K...

  • Page 67: G) Power Circuit

    SA-VK31EE 16.6. (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 G0AR76Y00001 R5453 L5401 R5253 R5250 L5201 C5242 C5243...
  • Page 68 SA-VK31EE 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 0.047 B0AACK000004 E5801 R5856 R5857 RSQX0001-1 R5256 R5456...

  • Page 69: Position Circuit & (L) Cd Loading Circuit

    SA-VK31EE 16.7. (H) Transformer Circuit, (J) CD Detect circuit, (K) Spindle Position Circuit & (L) CD Loading Circuit SCHEMATIC DIAGRAM - 18 : -B SIGNAL LINE TRANSFORMER CIRCUIT : +B SIGNAL LINE D950-D953 B0EAMM000038 VCC+ D952 D950 VCC- POWER CIRCUIT...

  • Page 70: M) Vcd Module Circuit

    SA-VK31EE 16.8. (M) VCD Module Circuit SCHEMATIC DIAGRAM - 19 VCD MODULE CIRCUIT : +B SIGNAL LINE R2120 IC2120 C3FBJC000057 FLASH ROM R2122 L2308 J0JCC0000119 R2303 4.7K 64 63 L2309 J0JCC0000119 D5V2 VDD5 LA12 LA12 AUX4 DSA_STRB LA13 LA13 AUX3...
  • Page 71 SA-VK31EE 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 470P L2307 L2305 G1C100K00020 G1C100K00020 D5V2 C2362 C2364 16V100...
  • Page 72 SA-VK31EE 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 ESS_RST D5V2 +A9V MICRO_DSA_STRB C2203 C2202 R2206 MICRO_DSA_ACK 16V10...

  • Page 73: Printed Circuit Board

    SA-VK31EE 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. (Side A & B) CD SERVO P.C.B (REPX0437B) TP30 X7201 C7107 C7217 R7214 C7244...
  • Page 74 SA-VK31EE CD SERVO P.C.B (REPX0437B) (SIDE B)

  • Page 75: B) Main

    SA-VK31EE 17.2. (B) Main P.C.B. MAIN P.C.B (REPX0439B) W2701 W2129 L2854 W2116 W2130 X2801 C2801 SW2800 IC2801 PAL/NTSC W2136 W2156 W2160 R2827 D2811 C2817 Q2814 Q2970 Q2974 R2998 Q2971 W2793 C2824 R2823 Q2816 W2162 R2824 W2113 D2812 W2137 Q2815 W2138...
  • Page 76 SA-VK31EE W2129 L2854 W2116 W2130 X2801 R2807 C2801 R2808 R2809 R2841 R2846 R2836 R2843 R2837 R2810 R2838 R2844 R2840 R2845 R2839 R2842 W2105 IC2801 W2106 W2102 W2136 W2991 W2104 W2160 R2827 C2803 W2952 C2817 R2815 W2793 C2824 R2823 R2824 W2113...

  • Page 77: C) Panel

    SA-VK31EE 17.3. (C) Panel P.C.B. PANEL P.C.B (REPX0382D) S604 OPEN/CLOSE J557 S605 S606 FL600 L610 C661 C641 S607 J665 J901 C660 S608 C657 D613 J609 J929 R627 S609 J666 IC603 Q610 J667 J645 C603 R657 Q611 R635 R656 Q612 J643...
  • Page 78 SA-VK31EE D600 S601 POWER CP601 J601 SENSOR J620 J616 C658 J688 J686 J610 D614 C642 J612 R649 R620 J644 R619 C644 R664 R618 IC601 R663 R617 R662 Z600 R661 J929 R660 Q610 J621 Q609 Q611 Q612 J643 J697 R917 Q613...

  • Page 79: D) Tact Switch P.c.b

    SA-VK31EE 17.4. (D) Tact Switch P.C.B. TACT SWITCH P.C.B (REPX0382D) VOLUME S904 S901 S903 R901 R902 CD PLAY S902 S905 S910 TUNER STOP DISPLAY VR600 R910 S906 S909 DECK2 OPEN R909 DECK1 OPEN S907 R908 TAPE CP900 R905 1 2 3 4 5 6 7 8...

  • Page 80: E) Deck P.c.b. & (F) Deck Mechanism P.c.b

    SA-VK31EE 17.5. (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 R1005 C1009 C1003 J1000 CS1002 TP10 J1002 L1002 TP11 Q1007 R1004 R1001 R1008 J1003 TP12 C1002 C1026 C1011 C1021...

  • Page 81: G) Power

    SA-VK31EE 17.6. (G) Power P.C.B. POWER P.C.B (REPX0440B) E5801 IC5801 JK5951 Q5804 11 12 13 14 15 16 17 18 D5801 W5870 R5828 W5808 C580 W5869 C5811 R582 W5830 C5805 D5802 R5450 W5825 R5253 HIGH CHANNEL W5857 SPEAKERS L5201 R5802...
  • Page 82 SA-VK31EE H5950/W5950 W5809 FP5833 Q5804 R5823 R5814 R5813 D5801 R5828 C5804 C5809 C5806 R5858 C5811 W5835 R5825 W5834 C5805 R5817 R5826 W5846 W5864 R5802 Q5806 R5834 R5827 R5818 W5804 R5812 R5803 R5820 R5819 R5804 R5805 R5824 Q5808 E5800 W5831 CN5801...

  • Page 83: H) Transformer P.c.b

    SA-VK31EE 17.7. (H) Transformer P.C.B. TRANSFORMER P.C.B (REPX0327M) T951(SUB-TRANSFORMER C963 Q952 R957 C962 Q953 C954 J920 R951 F1 T1.6AL 2 J918 C964 Q954 C952 C953 T950 (POWER TRANSFORMER) Q950 C960 CN951 C958 D952 Q951 C957 D950 FP951 D953 D958 J917...
  • Page 84 SA-VK31EE ORMER L950 F1 T1.6AL 250V JK950 J989 J988 AC IN 230V-240V 50Hz (POWER TRANSFORMER) J990 J987 J912 RL950 D965 PRIMARY H THIS P.C.B...

  • Page 85: J) Cd Detect P.c.b., (K) Spindle Position P.c.b. & (L) Cd

    SA-VK31EE 17.8. (J) CD Detect P.C.B., (K) Spindle Position P.C.B. & (L) CD Loading P.C.B. CD LOADING P.C.B (REP2578A-N) 2 3 4 5 6 7 8 9 10 OPEN PUSH PUSH SPINDLE POSITION P.C.B CD DETECT P.C.B (REP2578A-N) (REP2578A-N) LOAD...

  • Page 86: M) Vcd P.c.b. (Side A & B)

    SA-VK31EE 17.9. (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 C2373 R2122 C2374 C2356 L2308 R2308 R2303 R2309 R2310...

  • Page 87: Wiring Connection Diagram

    SA-VK31EE 18 Wiring Connection Diagram CD LOADING P.C.B. 20 ...1 CN2000 SOLDER SIDE 14 ..2 1..4 1.
  • Page 88 SA-VK31EE H5950/ W5950 1 ..9 JK5951 HIGH CHANNEL SPEAKERS POWER P.C.B SOLDER SIDE LOW CHANNEL SPEAKERS JK5952 CN5800 CN5801 12 ....1 12 .

  • Page 89: Illustration Of Ic 痴, Transistors And Diodes

    SA-VK31EE 19 Illustration of IC’s, Transistors and Diodes C0GAM0000005 (10p) C1BB00000086 (18p) C0AABB000117 C3FBJC000057 C1BB00000574 (16p) MN662790RSC (80p) AN7348S-E1 (24p) C1BB00000747 (42p) C1AB00001854 (100p) C1BB00000716 (16p) C1AB00001855 (100p) LA1833NMNTLM (24p) C2BBGF000556 (100p) LC72131MDTRM (20p) MN101C30AEB C0ABBB000126 (8p) C3ABMG000160 (50p) KIA4558FEL (8p)

  • Page 90: Terminal Function Of Ic 痴

    SA-VK31EE 20 Terminal Function of IC’s 20.1. 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. Mark Function (BLKCKf = 75Hz during normal playback)

  • Page 91: Ic7003 (An8739Sbte2) Focus Coil/ Tracking Coil

    SA-VK31EE 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 (Not connected, open) PGND1 Ground connection (1) for driver VCOF2 VCO Loop filter for 33.8688MHz...

  • Page 92: Ic600 (C2Bbgf000579) Microprocessor

    SA-VK31EE Pin No. Mark Function Pin No. Mark Function DRIVER_MUTE Not used (GND) CHG_SW1 CD Changer Switch 1 Input CLOSE_SW Not used (GND) CDPCONT CD Power Control (Active Level: OPEN_SW Not used (GND) MM_RST Mechacon Reset (Active: L) OPEN Not used (GND)

  • Page 93: Troubleshooting Guide

    SA-VK31EE 21 Troubleshooting Guide...

  • Page 94: Parts Location And Replacement Parts List

    SA-VK31EE 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 95: Deck Mechanism (Raa3412-S)

    SA-VK31EE 22.1. Deck Mechanism (RAA3412-S) 22.1.1. Deck Mechanism Parts Location...
  • Page 96 SA-VK31EE...
  • Page 97 SA-VK31EE 22.1.2. Deck Mechanism Parts List Ref. No. Part No. Part Name & Description Remarks CASSETTE DECK RED0071 R/P HEAD BLOCK UNIT RED0072 P/B HEAD BLOCK UNIT RDG0300 REEL BASE GEAR RDG0301 WINDING RELAY GEAR RDK0026 MAIN GEAR RDR0029-3 RELAY PULLEY...

  • Page 98: Cd Loading Mechanism (Rd-Dac026-S)

    SA-VK31EE 22.2. CD Loading Mechanism (RD-DAC026-S) 22.2.1. CD Loading Mechanism Parts Location...
  • Page 99 SA-VK31EE...
  • Page 100 SA-VK31EE 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 RML0516 PLUNGER LEVER...

  • Page 101: Cabinet

    SA-VK31EE 22.3. Cabinet 22.3.1. Cabinet Parts Location...
  • Page 102 SA-VK31EE...
  • Page 103 SA-VK31EE...

  • Page 104: Electrical Parts List

    SA-VK31EE 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 RHD30004-2S SCREW RKA0059-K LEG RUBBER REEX0202 10P FFC RKFX0093-K CASS. HOLDER (L) REEX0391 19P FFC WIRE RKFX0094-K CASS.
  • Page 105 SA-VK31EE Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks Q1015 B1ABCF000011 TRANSISTOR D954 B0EAKM000125 DIODE Q1016 B1GDCFJJ0023 TRANSISTOR D955 B0EAKM000125 DIODE Q1017 B1AARC000002 TRANSISTOR D956 B0EAKM000125 DIODE Q1020 B1ABEB000001 TRANSISTOR...
  • Page 106 SA-VK31EE Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks S905 EVQ21405R SW STOP L2306 G1C100K00020 CHIP INDUCTOR S906 EVQ21405R SW DECK 2 OPEN L2307 G1C100K00020 CHIP INDUCTOR S907 EVQ21405R SW TAPE...
  • Page 107 SA-VK31EE Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R614 ERDS2TJ102T 1K 1/4W EYF52BC FUSE HOLDER R615 ERDS2TJ101T 100 1/4W EYF52BC FUSE HOLDER R616 ERDS2TJ101T 100 1/4W R617 ERDS2TJ472T 4.7K 1/4W...
  • Page 108 SA-VK31EE Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R900 ERDS2TJ103T 10K 1/4W R1016 ERJ3GEYJ470V 47 1/16W R901 ERDS2TJ102T 1K 1/4W R1017 ERJ3GEYJ822V 8.2K 1/16W R902 ERDS2TJ102T 1K 1/4W R1018 D0GB392JA002 3.9K 1/16W...
  • Page 109 SA-VK31EE Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R1131 ERJ3GEYJ680V 68 1/16W R2159 ERJ3GEY0R00V 0 1/16W R1132 ERJ3GEYJ103V 10K 1/16W R2160 ERJ3GEY0R00V 0 1/16W R1133 ERJ3GEYJ102V 1K 1/16W R2199...
  • Page 110 SA-VK31EE Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R2732 D0GB332JA002 3.3K 1/16W R2853 ERJ3GEYJ104V 100K 1/16W R2733 ERJ3GEYJ102V 1K 1/16W R2901 ERJ3GEYJ472V 4.7K 1/16W R2734 ERJ3GEYJ104V 100K 1/16W R2902...
  • Page 111 SA-VK31EE Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R5449 ERDS2TJ683T 68K 1/4W R7331 ERJ3GEYJ682V 6.8K 1/16W R5450 ERDS2TJ683T 68K 1/4W R7335 D0GB101JA002 100 1/16W R5451 ERDS2TJ563T 56K 1/4W R7336...
  • Page 112 SA-VK31EE Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C672 ECBT1H103KB5 0.01 50V C1045 ECEA1AKA220B 22 10V C901 ECBT1H101KB5 100P 50V C1046 ECEA1CKA221B 220 16V C902 ECBT1H101KB5 100P 50V C1047...
  • Page 113 SA-VK31EE Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C2110 ECUVNC104KBV 0.1 16V C2374 ECJ1VB1C103K 0.01 16V C2111 ECEA1CKA100B 10 16V C2400 ECEV1CA100SR 10 16V C2112 ECEA1CKA100B 10 16V C2401...

  • Page 114: Packing Materials & Accessories Parts List

    SA-VK31EE Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C2828 ECJ2VB1H471K 470P 50V C5447 F1D1H473A012 0.047 50V C2829 ECUV1C104KBV 0.1 16V C5448 ECBT1H103KB5 0.01 50V C2832 ECEA1AKA101B 100 10V C5801 ECBT1H103KB5 0.01 50V...

  • Page 115: Packaging

    SA-VK31EE 22.6. Packaging PRT0405 D/E/J/N/S/A...

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