Panasonic sa vk31gc

Page 2

SA-VK31 GC / SA-VK31 GS

Pickup

Beam source/wavelength Semiconductor laser/780 nm
Stereo

20 Hz - 20 kHz (+1, -2 dB)

Below measurable limit

Number of channels
Frequency response
Wow and flutter
Digital filter 81s
D/A converter MASH (1 bit DAC)
Video

Video signal system PAL625/50, PAL525/60, NTSC

Output level Composite video, 1 Vp-p, 75 9
Terminal Pin jack (1 system)
MP3

Bit rate 32 kbps-32O kbps

Sampling frequency 32 kHz, 44.1 kHz, 48kHz
n GENERAL
Power Supply AC 110 V/127 V/220-230 V/240 V,

50/60HZ

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

n SYSTEM
SC-VK31 (GC) Music center: SA-VK31 (60)
Front speaker: SB-VK31 (GC)
Music center: SA-VK31 (GS)
(

Front speaker: SB-VK31 GC)

sc-vx31 (GS)

Note:

1.8pecifications 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.

A WARNING

This service information is designed for experienced repair technicians only and is not designed for use by the general public.

It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.

CONTENTS

1 Safety precautions (for G3 only)
2 Before Use (For 60 Only)-
3 Before Repair and Adjustment

4 Protection Circuitry ----------------------------------------------------------------- 5
5 Prevention of Electro Static Discharge (ESD) to

Electrostatically Sensitive (Es) Devices ................................. s

6 Handling the Lead Solder ------------------------------------------------------- 5

6.1. About lead free solder (PbF) .......................................... 6

7 Handling Precautions For Traverse Deck ............................... 7

8 Precaution of Laser Diode

9 Accessorie

10 Operation Procedures-
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 355 D ........................ 34
11.9. Measure for tape trouble ---------------------------------------------- 34

12 Service Position -------------------------------------------------------------------- 35

Page

12.1. Checking the Main P.C.B, Power P.C.B, Transformer
P.C.B. and Voltage Selector P.C.B
12.2. Checking the Panel P.C.B., Tact Switch P.C.B, Deck

'35

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---

14.2. How to enter the Self-Diagnostic Function-
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 Amplilier Failure (F61) --------------------------------------- 39
15 CD Test Mode Function -------------------------------------------------------- 39

15.1. How to set CD test mode -----------
15.2. CD Automatically Adjustment result indication

16 Measurements and Adjustments ......................

16.1. Cassette Deck Section ------------------------------------------------- 41
16.2. Tuner Section -------------------------------------------------------------- 42
16.3. Alignment Points ---------------------------------------------------------- 43

17 Block Diagram ...................................................................... 44