Panasonic SA-VK31GC User manual

nAMPLIFIER SECTION
PMPO 2500 W
RMS power output
THD 10% both channels driven
1 kHz (Low channel) 75 W per channel (6 Ω)
10kHz (High channel) 75 W per channel (6 Ω)
Total Bi-Amp power 150 W per channel
A
UX
Input sensitivity 250 mV
Input Impedance 13.3 kΩ
Phone jack
Terminal Stereo, 3.5 mm jack
MIC jack
Sensitivity 0.7 mV, 680 Ω
Terminal Mono, 3.5 mm jack (2 system)
nFM TUNER SECTION
Frequency range 87.50 - 108.00 MHz (50 kHz steps)
Sensitivity 2.5µV (IHF)
S/N 26 dB 2.2 µV
A
ntenna terminal(s) 75 Ω(unbalanced)
nAM TUNER SECTION
Frequency range 522 - 1629 kHz (9 kHz steps)
520 - 1630 kHz (10 kHz steps)
Sensitivity
©2004 Panasonic AVC Networks Singapore Pte.
Ltd. (RCB registration number: 197701580H) All
rights reserved. Unauthorized copying and
distribution is a violation of law.
SA-VK31GC
SA-VK31GS
Colour
(S)... Silver Type
S/N 20 dB (at 999 kHz) 560 µV/m
nCASSETTE DECK SECTION
Track system 4 track, 2 channel
Heads
Record/playback Solid permalloy head
Erasure Double gap ferrite head
Motor DC servo motor
Recording system AC bias 100 kHz
Erasing system AC erase 100 kHz
Tape speed 4.8 cm/s
Overall frequency response (+3 dB, -6 dB at DECK OUT)
NORMAL (TYPE I) 35 Hz - 14 kHz
S/N 50 dB (A weighted)
Wow and flutter 0.18 % (WRMS)
Fast forward and rewind time Approx. 120 seconds with
C-60 cassette tape
nCD 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 44.1 kHz
Decoding 16 bit linear
CD Stereo System
Specifications
ORDER NO.MD0405174C3
All manuals and user guides at all-guides.com
all-guides.com

Pickup
Beam source/wavelength Semiconductor laser/780 nm
Number of channels Stereo
Frequency response 20 Hz - 20 kHz (+1, -2 dB)
Wow and flutter Below measurable limit
Digital filter 8fs
D/A converter MASH (1 bit DAC)
Video
Video signal system PAL625/50, PAL525/60, NTSC
Output level Composite video, 1 Vp-p, 75 Ω
Terminal Pinjack(1system)
MP3
Bit rate 32 kbps-320 kbps
Sampling frequency 32 kHz, 44.1 kHz, 48kHz
nGENERAL
Power Supply AC 110 V/127 V/220-230 V/240 V,
50/60Hz
1 Safety precautions (for GS only) 4
2 Before Use (For GC Only) 5
3 Before Repair and Adjustment 5
4 Protection Circuitry 5
5 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices 6
6 Handling the Lead Solder 6
6.1. About lead free solder (PbF) 6
7 Handling Precautions For Traverse Deck 7
8 Precaution of Laser Diode 8
9 Accessories 9
10 Operation Procedures 10
11 Operation Checks and Main Component Replacement
Procedures 11
11.1. Disassembly of Top Cabinet and Rear Panel 12
11.2. Disassembly of CD Mechanism Unit 14
11.3. Disassembly Main P.C.B., Transformer P.C.B. & MP3
P.C.B. 15
11.4. Disassembly of Panel P.C.B. & Tact Switch P.C.B. 16
11.5. Disassembly of Deck Mechanism Unit & Deck P.C.B. 17
11.6. CD Mechanism Main Component Replacement
Procedures 17
11.7. Disassembly Deck Mechanism 30
11.8. Replacement for the cassette lid ass 馳34
11.9. Measure for tape trouble 34
12 Service Position 35
Power consumption 251 W
Dimensions (W x H x D) 250 x 330 x 358 mm
Mass 7.9kg
Power consumption in standby mode: 0.85 W
nSYSTEM
SC-VK31 (GC) Music center: SA-VK31 (GC)
Front speaker: SB-VK31 (GC)
SC-VK31 (GS) Music center: SA-VK31 (GS)
Front speaker: SB-VK31 (GC)
Note:
1.Specifications are subject to change without notice. Mass and
dimensions are approximate.
2.Total harmonic distortion is measured by the digital spectrum
analyzer.
3.HIGH stands for High Frequency. LOW stands for Low
Frequency.
12.1. Checking the Main P.C.B., Power P.C.B., Transformer
P.C.B. and Voltage Selector P.C.B. 35
12.2. Checking the Panel P.C.B., Tact Switch P.C.B., Deck
P.C.B. & Deck Mechanism P.C.B. 36
13 Description of Error Code 37
13.1. Abnormality Detection for DECK Mechanism 37
13.2. Abnormality detection for CD/Changer Block 37
13.3. Power Supply Related Error Detection 37
14 Self-Diagnostic Function 38
14.1. Self-diagnostic display 38
14.2. How to enter the Self-Diagnostic Function 38
14.3. Cassette Mechanism Test (For error code H01, H02, H03,
F01) 38
14.4. CD Mechanism Test (F15, F26, F16, F17, F27, F28, F29,
H15) 39
14.5. To clear all Error code 39
14.6. How to get out from Self-Diagnostic function 39
14.7. Power Amplifier Failure (F61) 39
15 CD Test Mode Function 39
15.1. How to set CD test mode 39
15.2. CD Automatically Adjustment result indication 39
16 Measurements and Adjustments 41
16.1. Cassette Deck Section 41
16.2. Tuner Section 42
16.3. Alignment Points 43
17 Block Diagram 44
CONTENTS
Page Page
2
SA-VK31GC / SA-VK31GS
All manuals and user guides at all-guides.com

18 Schematic Diagram 52
18.1. (A) CD Servo Circuit 53
18.2. (B) Tuner/Main Circuit 55
18.3. (B) Main Circuit 56
18.4. (C) Panel Circuit & (D) Tact Switch Circuit 62
18.5. (E) Deck Circuit & (F) Deck Mechanism Circuit 66
18.6. (G) Power Circuit 68
18.7. (H) Transformer Circuit, (I) Voltage Selector Circuit, (J) CD
Detect circuit, (K) Spindle Position Circuit & (L) CD
Loading Circuit 70
18.8. (M) VCD Module Circuit 71
19 Printed Circuit Board 74
19.1. (A) CD Servo P.C.B. (Side A & B) 74
19.2. (B) Main P.C.B. 76
19.3. (C) Panel P.C.B. 78
19.4. (D) Tact Switch P.C.B. 80
19.5. (E) Deck P.C.B. & (F) Deck Mechanism P.C.B. 81
19.6. (G) Power P.C.B. 82
19.7. (H) Transformer P.C.B. & (I) Voltage Selector P.C.B. 84
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. 86
19.9. (M) VCD P.C.B. (Side A & B) 87
20 Wiring Connection Diagram 88
21 Illustration of IC 痴, Transistors and Diodes 90
22 Terminal Function of IC 痴91
22.1. IC7001 (AN22004A-NF) Servo Amplifier 91
22.2. IC7002 (MN662790RSC) Servo Processor/ Digital Signal
Processor/ Digital Filter/ D/A Converter 91
22.3. IC7003 (AN8739SBTE2) Focus Coil/ Tracking Coil/
Traverse Motor/ Spindle Motor Driver 92
22.4. IC2801 (MN101C30AEA) Mechacon IC 92
22.5. IC600 (C2BBGF000511) Microprocessor 93
23 Troubleshooting Guide 94
24 Parts Location and Replacement Parts List 95
24.1. Deck Mechanism (RAA3412-S) 96
24.2. CD Loading Mechanism (RD-DAC026-S) 99
24.3. Cabinet 102
24.4. Electrical Parts List 105
24.5. Packing Materials & Accessories Parts List 116
24.6. Packaging 116
3
SA-VK31GC / SA-VK31GS
All manuals and user guides at all-guides.com

1 Safety precautions (for GS only)
4
SA-VK31GC / SA-VK31GS
All manuals and user guides at all-guides.com

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. (If the power supply in your area is 117V or 120V, set to the “127V” position.)
Note that this unit will be seriously damaged if this setting is not made correctly. (There is no voltage selector for some countries,
the correct voltage is already set.)
3 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.
After repairs are completed, restore power gradually using a variac, to avoid overcurrent.
Current consumption at AC 110V, 50/60 Hz and AC 240V, 50 Hz in NO SIGNAL mode should be ~650mA and ~600mA
respectively.
4 Protection Circuitry
The protection circuitry may have operated if either of the following conditions are noticed:
· No sound is heard when the power is turned on.
· Sound stops during a performance.
The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are
“shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.
If this occurs, follow the procedure outlines below:
1.Turn off the power.
2.Determine the cause of the problem and correct it.
3.Turn on the power once again after one minute.
Note:
When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
5
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” components. The following techniques should be used to help reduce the incidence of component damage
caused by electro static discharge (ESD).
1.Immediately before handling any semiconductor component or semiconductor-equiped assembly, drain off any ESD on your
body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,
which should be removed for potential shock reasons prior to applying power to the unit under test.
2.After removing an electrical assembly equiped with ES devices, place the assembly on a conductive surface such as aluminium
foil, to prevent electrostatic charge build up or exposure of the assembly.
3.Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4.Use only an anti-static solder remover device. Some solder removal devices not classified as “anti-static (ESD protected)” can
generate electrical charge to damage ES devices.
5.Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6.Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most
replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminium foil or
comparable conductive material).
7.Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be installed.
Caution
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8.Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the
brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD)
sufficient to damage an ES device).
6 Handling the Lead Solder
6.1. About lead free solder (PbF)
Distinction of PbF P.C.B. :
P.C.B.s (manufactured) using lead free solder will have a PbF stamp on the P.C.B.
Caution:
· Pb free solder has a higher melting point that standard solder; Typically the melting point is 50 - 70°F (30 - 40°C) higher.
Please use a high temperature soldering iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F
(370 ± 10°C).
· Pb free solder will tend to splash when heated too high (about 1100°F/600°C).
· When soldering or unsoldering, please completely remove all of the solder on the pins or solder area, and be sure to heat the
soldering points with the Pb free solder until it melts enough.
6
SA-VK31GC / SA-VK31GS
All manuals and user guides at all-guides.com
all-guides.com

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.
So, be careful of electrostatic breakdown during repair of the traverse deck (optical pickup).
· Handling of traverse deck (optical pickup)
1.Do not subject the traverse deck (optical pickup) to static electricity as it is extremely sensitive to electrical shock.
2.The short land between the No.4(LD) and No.5(GND) pins on the flexible board (FFC) is shorted with a solder build-up to
prevent damage to the laser diode.To connect to the PC board, be sure to open by removing the solder build-up, and finishthe
work quickly.
3.Take care not to apply excessive stress to the flexible board (FFC).
4.Do not turn the variable resistor (laser power adjustment). It has already been adjusted.
· Grounding for electrostatic breakdown prevention
1.Human body grounding
Use the anti-static wrist strap to discharge the static electricity from your body.
2.Work table grounding
Put a conductive material (sheet) or steel sheet on the area where the traverse deck (optical pickup) is placed, and ground
the sheet.
Caution :
The static electricity of your clothes will not be grounded through the wrist strap. So, take care not to let your clothes touch the
traverse deck (optical pickup).
Caution when Replacing the Traverse Deck :
The traverse deck has a short point shorted with solder to protect the laer diode against electroststics breakdown. Be sure to
remove the solder from the short point before making connections.
7
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
Laser radiation from pick up unit is safety level, but be sure the followings:
1.Do not disassemble the optical pick up unit, since radiation from exposed laser diode is dangerous.
2.Do not adjust the variable resistor on the pick up unit. It was already adjusted.
3.Do not look at the focus lens using optical instruments.
4.Do not look at pick up lens.
CAUTION!
THIS PRODUCT UTILIZES A LASER.
USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT
IN HAZARDOUS RADIATION EXPOSURE.
nUse of Caution Labels
8
SA-VK31GC / SA-VK31GS
All manuals and user guides at all-guides.com

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
9
SA-VK31GC / SA-VK31GS
All manuals and user guides at all-guides.com

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

Some chassis components may have sharp edges.
Be careful when disassembling and servicing.
11 Operation Checks and Main Component Replacement
Procedures
“ATTENTION SERVICER”
1.This section describes procedures for checking the operation of the major printed circuit boards and replacing the
main components.
2.For reassembly after operation checks or replacement, reverse the respective procedures.
Special reassembly procedures are described only when required.
3.Select items from the following index when checks or replacement are required.
Warning:
This product uses a laser diode. Refer to caution statement Precaution of Laser Diode.
11
SA-VK31GC / SA-VK31GS
All manuals and user guides at all-guides.com
all-guides.com

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.
· Disassembly of Rear Panel
Step 3 Remove 8 screws and disconnect wire at CN305 (Fan)
at rear cabinet as shown.
11.1.1. Disasembly for CD Lid
(The CD changer unit can be removed after the CD Lid is
removed)
· Follow the (Step 1) - (Step 2) of Item 11.1 - Disassembly of
Top Cabinet and Rear Panel
When opening the disc tray automatically (Using Power
Supply)
Step 1 Connect the AC power cord.
Step 2 Press the POWER button to power up the main unit.
Step 3 Press the OPEN/CLOSE button, the disc tray will be
open automatically.
11.1. Disassembly of Top Cabinet and Rear Panel
12
SA-VK31GC / SA-VK31GS
All manuals and user guides at all-guides.com

Step 4 Release the 2 claws, and then remove the CD Lid.
Step 5 Press the POWER button to turn the power on.
Step 6 Press the OPEN/CLOSE button, the disc tray will be
close.
[Open the disc tray manually (Using service tools)]
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.
Step 2 Release the 2 claws, and then remove the CD lid cover.
13
SA-VK31GC / SA-VK31GS
All manuals and user guides at all-guides.com

Step 1 Detach the FFC boards (CN309 & CN310).
Step 2 Release the claws of both ends, and then lift up the CD
Mechanism Unit.
Step 3 Repeat Step 2 but rotate the gear tools in anti-clockwise
direction.
Step 4 The disc tray will be close.
Step 3 Remove 4 screws.
Step 4 Remove the CD chassis.
Step 5 Lay the CD mechanism unit as shown.
· Note:
For disassembly of CD mechanism unit, please refer to
Section 11.6 of this manual.
11.2. Disassembly of CD Mechanism Unit
· Follow the (Step 1) - (Step 3) of Item 11.1 - Disassembly of Top Cabinet and Rear Panel
· Follow the (Step 1) - (Step 6) of Item 11.1.1 - Disassembly for CD Lid
14
SA-VK31GC / SA-VK31GS
All manuals and user guides at all-guides.com

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
· Follow the (Step 1) - (Step 6) of Item 11.1.1 - Disassembly
for CD Lid
· Follow the (Step 1) - (Step 5) of Item 11.2 - Disassembly for
the CD Mechanism Unit
Step 1 Disconnect FFC at CN2902, CN2903 & CN2904 from
Panel P.C.B.
Step 2 Lift up Main P.C.B. by disconnect CN500 & CN501 as
arrow shown above.
11.3.2. Disassembly of the Transformer
P.C.B. & Voltage Selector P.C.B.
· Follow the (Step 1) - (Step 3) of Item 11.1 - Disassembly of
Top Cabinet and Rear Panel
· Follow the (Step 1) - (Step 6) of Item 11.1.1 - Disassembly
for CD Lid
· Follow the (Step 1) - (Step 5) of Item 11.2 - Disassembly for
the CD Mechanism Unit
· Follow the (Step 1) - (Step 2) of Item 11.3.1 - Disassembly
for the Main P.C.B.
Step1 Remove 3 screws, disconnect connector CN951.
11.3.3. Disassembly of the Power P.C.B.
· Follow the (Step 1) - (Step 2) of Item 11.1 - Disassembly of
Top Cabinet and Rear Panel
· Follow the (Step 1) - (Step 6) of Item 11.1.1 - Disassembly
for CD Lid
· Follow the (Step 1) - (Step 5) of Item 11.2 - Disassembly of
the CD Mechanism Unit
· Follow the (Step 1) - (Step 2) of Item 11.3.1 - Disassembly
for the Main P.C.B.
· Follow the (Step 1) of Item 11.3.2 - Disassembly for the
Transformer P.C.B.
Step 1 Remove 2 screws fixed to the Main P.C.B.
Step 2 Remove the 2 screws fixed at heat sink.
NOTE:
Insulate Power P.C.B. with insulation material to avoid short
circuit.
· Replacement of Power Amplifier IC & Voltage Regulator
11.3. Disassembly Main P.C.B., Transformer P.C.B. & MP3 P.C.B.
15
SA-VK31GC / SA-VK31GS
All manuals and user guides at all-guides.com

Step 1 Break the joint with a metal cutter as shown below.
· Follow the (Step 1) - (Step 6) of Item 11.1.
· Follow the (Step 1) - (Step 6) Disassembly for the CD Lid of
Item 11.1.1.
· Follow the (Step 1) - (Step 6) Disassembly for the CD
Changer Unit of Item 11.1.2.
Step 1 Lay the unit as shown below.
Step 2 Remove 2 screws, release 2 claws, and then draw the
front panel ass’y forward.
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 3 Remove the 8 screws.
Step 4 Disconnect FFC Boards (CN951, CN2903, CN2902 &
CN2904).
· Disassembly of Tact Switch P.C.B.
11.4. Disassembly of Panel P.C.B. & Tact Switch P.C.B.
16
SA-VK31GC / SA-VK31GS
All manuals and user guides at all-guides.com
all-guides.com

Step 5 Disconnect connector CP600.
· Follow the (Step 1) - (Step 3) of Item 11.1 - Disassembly of
Top Cabinet and Rear Panel
· Follow the (Step 1) - (Step 6) of Item 11.1.1 - Disassembly
for CD Lid
· Follow the (Step 1) - (Step 5) of Item 11.2 - Disassembly for
the CD Mechanism Unit
Step 1 Detach FFC board. (CN951, CN2902, CN2903 &
CN2904)
Step 2 Disconnect FFC flat cable from the connector
(CN2903).
Step 3 Remove the 5 screws.
· Follow the (Step 1) - (Step 3) of Item 11.1 - Disassembly of
Top Cabinet and Rear Panel
· Follow the (Step 1) - (Step 6) of Item 11.1.1 - Disassembly
for CD Lid
· Follow the (Step 1) - (Step 5) of Item 11.2 - Disassembly for
the CD Mechanism Unit
Step 6 Pull out the volume knob.
Step 7 Pull Panel P.C.B. forward.
Step 4 Push the lever upward, and then open the cassette lid
ass’y (For DECK1 and DECK2).
Step 5 Tilt the cassette mechanism unit in the direction of
arrow (1), and then remove it in the direction of arrow (2).
· For replacement of Deck P.C.B.
Step 6 Unsolder the motor terminals.
Step 7 Remove 4 screws.
Step 8 Remove Deck P.C.B.
11.6.1. Replacement of the Traverse Deck
Step 1 Remove the CD changer unit.
11.5. Disassembly of Deck Mechanism Unit & Deck P.C.B.
11.6. CD Mechanism Main Component Replacement Procedures
17
SA-VK31GC / SA-VK31GS
All manuals and user guides at all-guides.com

Step 2 Insert the gear with hexagonal wrench into the hole.
Step 3 Rotate the hexagonal wrench in the direction of arrow
(clockwise), and then open the disc tray fully.
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).
Step 6 Lift up the traverse deck ass’y.
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.
Step 8 Remove 3 screws.
Step 9 Unsolder the motor terminals (4 points).
18
SA-VK31GC / SA-VK31GS
All manuals and user guides at all-guides.com

Step 10 Remove the FFC board from the connector, and then
remove the CD Servo P.C.B.
Step 11 Remove the pin.
Step 12 Release the claw, and then remove the traverse deck
ass’y.
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.
Step 3 Remove 3 screws.
Step 4 Solder.
· Note for installation of the CD servo P.C.B.
· Installation for traverse deck ass’y
19
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.
Step 4 Force the disc tray fully.
Step 5 With pressing the claw (B) in the direction of arrow (1),
force the connection lever in the direction of arrow (2).
11.6.2. Replacement for the Disc Tray
Step 1 Remove 4 screws.
Step 2 Remove the upper plate.
Step 3 Remove 3 screws.
20
SA-VK31GC / SA-VK31GS
All manuals and user guides at all-guides.com