Panasonic sa ak 330 ee service manual

Page 2

SA-AK33 GEE

D/A converter MASH (1 bit DAC)
Pickup
780 nm

Semiconductor laser

Wavelength

Beam Source
Audio output (Disc)
Number of channels
n GENERAL

Power Supply

2 (Stereo) (FL,FR)

AC 230 V, 50HZ
238 W
0.7 W

Power consumption

Power consumption
mode

in standby

Dimensions (W x H x D) 250 x 330 x 341 mm

Mass

Operating temperature range
Operating humidity range

n SYSTEM

SC-AK330 (EE-S)

SC»AK330 (EE-K)

7.1 kg
+5 to +35°C
5 to 90% RH (no condensation)

Music center: SA-AK330 (EE-S
Speaker: SB-AK330 (GC-S
Music center: SA-AK330 (EE-K
Speaker: SB-AKSSO (EG-K

Notes:

1. Specifications 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

Page

1 Before Repair and Adjustment ---------------------------------------- 4

2 Protection Circuitry ...................................................... 4
3 Prevention of Electra 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

7 Accessories ............................................................... 8

3 Operation Procedures .............

9 Disassembly and Assembly of Mam Componen

9.1. Disassembly flow chart---

9.2. Gear for servicing (jig) Information -

9.3. Disassembly of Top Cabinet ---------------------------------- 13
9.4. Disassembly of CD Lid ......................................... 13
9.5. Disassembly of Rear Panel ----------------------------------- 15
9.5. Disassembly of CD Mechanism Unit ------------------------- 15
9.7. Disassembly of Main P.C.B. ----------------------------------- 15
9.8. Disassembly of Power P_c_B, ................................. 15
9.9. Disassembly of Transformer P_C_B, ------------------------- 17

9.10. Disassembly of Front Panel Unit ------

9.11. Disassembly of Deck Mechanism Unit-
9.12. CD Mechanism Main Component Replacement

Procedures ------------------------------------------------------- 19
9.13. Replacement for the pinch roller ass [I and head block-33
9.14. Replacement for the Deck motor ass|j , capstan belt A,

woman belt B and winding belt ------------------------------ 34
9.15. Replacement for the cassette lid ass [I .................... 37
9.16. Rectification for tape jam problem ........................... 38

10 Checking for major P.C.Bs -----
10.1. Checking of Main P.C.B.
10.2. Checking of Transformer P.C.B.

Page

10.3. Checking of Panel, Deck & Deck Mechanism P.C.B. ----41
10.4. Checking of Power P.C.B
11 Self-Diagnostic Function --

11.1. Self»diagnostlc display

11.2. How to enter the Self-Diagnostic Function ----------------- 43
11.3. Cassette Mechanism Test (For error code H01, H02, H03,
F01) ---------------------------------------------------------------- 43
11.4. CD Mechanism Test (F15, F26, F16, F17, F27, F28, F29,
F30, H15 3. H16) ------------------------------------------------ 43
11.5. To clear all Error code ----------------------------------------- 44

11.6. To exit from Self-Diagnostic function
11.7. Power Amplifier Failure (F61
11.8. Description of Error Code

12 CD Test Mode Function ............................................... 46
12.1. How to set CD test mode ...................................... 46
12.2. CD Automatically Adjustment result indicatiOn - 46
12.3. CD Mecha Aging Test Mode (0220) ........................ 46
12.4. Micon ROM Checksum and Version Display Mode ------- 47

13 Measurements and Adjustments ................................... 43
13.1. Cassette Deck Section ......................................... 43

13.2. Tuner Section
13.3. Alignment Points

14 Block Diagram ..........

15 Voltage Measurement ---------------------------------------- 57
16 Schematic Diagram ------------------------------------------------- 59
16.1. (A) CD Servo Circuit -------------------------------------------- 60
16.2. (B) Main (Tuner) Circuit ---------------------------------- 62
16.3. (B) Main Circuit ------------------------------------------ 63

16.4. (C) Panel Circuit ---------------------------------------------- 68

16.5. (D) Transformer Circuit, (E) CD Detect Circuit, (F) Spindle
Position Circuit & (G) CD Loading Circuit

16.6. (H) Power Circuit -----------------------------