Panasonic sa ak230 gc gn panasonic audio

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SA-AK23OGC I SA-AK23OGN

Dimensions (W x H x D)
Mass

Operating temperature range
Operating humidity range

250 x 330 x 341 mm

6.9 kg

+5 to +35C

5 to 90% RH (no condensation)

CD 44.1 kHz
Decoding 16 bit linear
Digital filter 8 fs
D/A converter MASH (1 bit DAC)
Pickup

Wavelength 780 nm

Beam Source Semiconductor laser
Audio output (Disc)

Number of channels 2 (Stereo) (FL,FR)

n SYSTEM

SC-AK230 (GC) Music center: SA-AK230 (GC)
Speaker: SB-AK230 (GC)
SC-AK230 (GN) Music center: SA-AK230 (GN)
Speaker: SB-AK230 (GC)

n GENERAL Notes:
Power Supply 1.Specifications are subject to change without notice. Mass and
For (30 only AC 220 _ 240 V, 50/60 Hz dimensions are approximate.
For GN only AC 230 _ 240 V 50 HZ 2. Total harmonic distortion is measured by the digital spectrum
I .
Power consumption 174 W ana yzer
Power consumption in standby 0.7 W
mode
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

Page

1 Before Repair and Adjustment ............................................... 4

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

Electrostatically Sensitive (ES) Devices ................................. 5

4 Handling the Lead-free Solder ------------------------------------------------ 5

4.1. About lead free solder (PbF) .......................................... 5

5 Handling Precautions For Traverse Deck ............................... 5

6 Precaution of Laser Diode

7 Accessorie

3 Operation Procedures -

9 Disassembly and Assembly of Main Component ----------------- 11
9.1. Disassembly flow chart ---------------------------------------- 11
9.2. Gear for servicing (jig) Information -------------------------------- 12
9.3. Disassembly of Top Cabinet ----------------------------------------- 13
9.4. Disassembly of CD Lid ------------------------------------------------- 13
9.5. Disassembly of Rear Panel ------------------------------------- 15

9.6. Disassembly of CD Mechanism Unit ----------------------------- 15
9.7. Disassembly of Main P.C.B.-
9.8. Disassembly of Power P.C.B. --
9.9. Disassembly of Transformer P.C.B.

9.10. Disassembly of Front Panel Unit ----------------------------------- 18
9.11. Disassembly of Deck Mechanism Unit --------------------------- 18
9.12. CD Mechanism Main Component Replacement
Procedures ------------------------------------------------------------------ 19
9.13. Replacement for the pinch roller ass |] and head block-32
9.14. Replacement for the Deck motor ass |] , capstan belt A,
capstan belt B and winding belt -----------
9.15. Replacement for the cassette lid ass U

9.16. Rectification for tape jam problem -----

Page
10 Checking for major P.C.Bs --------------------------------------------------- 38
10.1. Checking of Main P.C.B. ---------------------------------------------- 38
10.2. Checking of Transformer P.C.B. ----------------------------------- 39
10.3. Checking of Panel, Deck & Deck Mechanism P.C.B. ----- 40
10.4. Checking of Power P.C.B. -------------------------------------------- 41
11 Self-Diagnostic Function ------------------------------------------------------ 42
11.1. Self-diagnostic display -------------------------------------- 42
11.2. How to enter the Self-Diagnostic Function --------------------- 42
11.3. Cassette Mechanism Test (For error code H01, H02, H03,
F01) --42

11.4. co Mechanism Test (F15, F26, F16, F17, F27, F28, F29,
F30, H15 & H16) ---------------------------------------------------------- 42
11.5. To clear all Error code -------------------------------------------------- 43
11.6. To exit from Self»Diagnostic function ----------------------------- 43
11.7. Power Amplifier Failure (F61) --------------------------------------- 43
11.8. Description of Error Code --------------------------------------------- 43
12 CD Test Mode Function -------------------------------------------------------- 45

12.1. How to set CD test mode -----------

12.2. CD Automatically Adjustment result indication
12.3. CD Mecha Aging Test Mode (CRzo) ............
12.4. Micon ROM Checksum and Version Display Mode -------- 46

13 Measurements and Adjustments ------------------------------------------ 47
13.1. Cassette Deck Section ------------------------------------------------- 47
13.2. Tuner Section -------------------------------------------------------------- 47
13.3. Alignment Points ---------------------------------------------------------- 48

14 Block Diagram ---------------------------------------------------------------------- 49

15 Voltage Measurement-

16 Schematic Diagram-
16.1. (A) CD Servo Circuit