Panasonic sa ak 640 gcp service manual

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ORDER NO. MD0601013C3

Service Manual

COMPACT

DIGITAL AUDIO

Remote SB-AK64O SA-AK64O
Control

SB-WAK64O SB-AK640

CD Stereo System
SA-AK64OGCP

Colour
(8)... Silver Type

Notes: This models CD mechanism changer unit is CRS1. Please refer to the original Service Manual

(Order No. M0050936800) for this mechanism.

Specifications
n AMPLIFIER SECTION
RMS output power
THD 10%,
1 kHz
(Low channel-both channels driven)
90 W per channel (3 Q)
10 kHz
(High channel-both channels driven)
90 W per channel (3 Q)

60 Hz
(Subwoofer channel) 180 W (8 Q)
Total output power 540 W

n FMIAM TUNER, TERMINALS SECTION

Preset station FM 15 stations

AM 15 stations
Frequency Modulation (FM)

Frequency range

87.50 to 108.00 MHZ (50 kHz steps)

4.0 V (IHF)

2.2 V

75 Q (unbalanced)

Sensitivity

S/N 26dB

Antenna terminal(s)
Amplitude Modulation (AM)
Frequency range 522 to 1629 kHz (9 kHz step)
520 to 1630 kHz (10 kHZ step)

Sensitivity

Panasonic

S/N ZOdB (at 999 kHz)
Music Port input jack

560 uV/m

Terminal Stereo, 3.5 mm jack
Sensitivity 100 mV, 4.7 kg
Phone jack

Terminal Stereo, 3.5 mm jack
Mic jack

Terminal Mono, 3.5 mm jack
Sensitivity 0.7 mV, 680 Q

n CASSETTE DECK SECTION

Track system 4 track, 2 channel

Heads

Record/playback Solid permalloy head
Erasure Double gap ferrite head
Motor DC servo motor

AC bias 100 kHz
AC erase 100 kHz
4.8 cm/s

Recording system
Erasing system
Tape speed
Overall frequency response (+3, -6 dB) at DECK OUT
NORMAL 35 Hz to 14 kHz
S/N ratio 50 dB (A weighted)
Wow and flutter 0.18 % (WRMS)
Fast forward and rewind time Approx. 120 seconds with
(3-60 cassette tape
11 DISC SECTION

© 2006 Matsushita Electric Industrial Co. Ltd.. All
rights reserved. Unauthorized copying and
distribution is a violation of law.

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SA-AKGAOGCP

Disc played [8 cm or 12 cm]
(1) CD-Audio (CD-DA)
(2) CD»RIRW (CD-DA, MP3, WMA formatted disc)

(3) MP3/VVMA
Bit rate

MP3, WMA 32 kbps to 320 kbps
Sampling frequency

MP3/WMA 32 kHz, 44.1 kHZ, 48 kHz
CD-DA 44.1 kHz
Decoding 16 bit linear
Digital filter 8 fs
D/A converter MASH (1 bit DAC)
Pick up

Wavelength 780 nm

Beam Source Semiconductor laser
Audio output (Disc)
Number of channels

n GENERAL

2 (Stereo) (FL,FR)

Power supply

AC 110 to 127/220 to 240 V, 50/6OHZ

Power consumption 130 W
Power consumption in standby 0.6 W
mode

Dimensions (W x H x D) 250 x 330 x 343 mm
Mass 7.1 kg
Operating temperature range +5 to +35C

Operating humidity range
It SYSTEM
SC-AK640 (GCP)

5 to 90% RH (no condensation)

Music center: SA-AK640 (GCP)
Speaker: SB-AK640 (GC)
Subwoofer: SB-WAK640 (GC)

For information on speaker system, please refer to the original
Service Manual (Order No. MD0512476A3) for SB»AK64OGC and
(Order No. MD0512477A3) for SB-WAK64OGC.
Notes:
1.8pecifications are subject to change without notice. Mass and
dimensions are approximate.
2.Total harmonic distortion is measured by the digital spectrum
analyzer.

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

1.1. General Guidelines

1.2. Before Use -------------------------------------------------------------------- 4
1.3. Before repair and adjustment ......................................... 4
1.4. Protection Circuitry --------------------------------------------------------- 4

2 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices ................................. 5
3 Handling Precautions For Traverse Deck ............................... s
4 Precaution of laser diode ....................................................... 7

5 Handling the Lead-tree Solder
5.1. About lead free solder (PbF)-
6 New Features -----------------------------

6.1. CRS1 Mechanism Overview ........................................... g
6.2. Music Port ------------------------------------------------------------------- 11
7 Accessories -------------------------------------------------------------------------- 12

13
9 Self diagnosis and special mode setting .............................. 15
9.1. Special Mode Table ..................................................... 15
9.2. Error code Table ------------ .17

8 Operating Instructions Procedures -----

10 Assembling and Disassembling 1
10.1. Caution ----- -21
10.2. Disassembly flow chart ------------------------------------------------- 22
10.3. Main Parts Location ----------------------------------------------------- 23
10.4. Disassembly of Top Cabinet ----------------------------------------- 24
10.5. Disassembly of Rear Panel ---------------------------------------- 24

10.6. Disassembly of CD Changer Unit (CR31) ..................... 24

10.7. Disassembly of Main P.C.B.-
10.8. Disassembly of Transformer P.C.B.
10.9. Disassembly of Power P.C.B.

10.10. Disassembly of Front Panel Unit ................................... 28
10.11. Disassembly for Panel P,c_B_ --------------------------------------- 29
10.12. Disassembly of Deck mechanism unit --------------------------- 30
10.13. Disassembly of Deck P.C,B, ......................................... 30

----------------------------- 30
10.15. Disassembly of optical pickup unit (CD mechanism) ------ 32

10.14. Disassembly of Traverse Unit -----

10.16. Disassembly of Deck Mechanism
10.17. Replacement for cassette lid

10.18. Rectification for tape jam problem-

11 Service Fixture and Tools ..................................................... 3g
12 Service Positions .................................................................. 39
12.1. Cheeking and Repairing of Main P.C.B. ........................ 39
12.2. Checking and Repairing of Transformer P1313. ............. 40

12.3. Checking and Repairing of Panel, Deck & Deck
Mechanism P.C.B.
12.4. Checking and Repairing of Power P.C.B.

13 Adjustment Procedures-
13.1. Cassette Deck Section

13.2. Tuner Section -------------------------------------------------------------- 44
14 Voltage and Waveform Chan ------------------------------------------------ 46
14.1. CD Servo P.C.B. & Main P_C_B, ----------------------------------- 45
14.2. Power P.C.B. & Transformer P.C,B, .............................. 43
14.3. Waveform Chart ----------------------------------------------------------- 49