Panasonic sc en33pc

Page 2

Type 1 Way, 1 speaker system
Speaker(s) 8 cm (5 1/2") cone type 6 w
Impedance 6 w

Input power
Dimension (W x H x D)

6 (MAX)
121 mm x 236 mm x 146 mm
(4 3/ x 9 9/32" x 5 3/4")

Power consumption in standby mode:
2.0 W (appx)
Notes:
- Specifications are subject to change without notice.
- Mass and dimensions are approximate.

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 Safety Precautions __________________________________________________________________ 4
1.1. General Guidelines ........................................................ 4

1-2- Caution for fuse replacement __________________________________________ 5

1-3- Before repair and adjustment _________________________________________ 5

1.4. Protection Circuitry ----- 5

1.5. Safety Parts information
2 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices

3 Precaution of laser diode .............

4 Handling Precautions For Traverse Unit ................................ 7
5 About Lead Free Solder (PbF) ....................................... 9
5.1. ServiCe caution based on legal restrictions ...................... 9
6 Accessories -------------------------------------------------------------------------- 10
7 Operation Procedures ........................................................... 11
7.1. Remote Control Key Buttons Operations ....................... 11
7.2. Main Unit Key Buttons Operations- --11

7.3. Connection --

8 Self diagnosis and special mode setting-

8.1. Service Mode Summary Table ...................................... 13
8.2. Service Mode Table 1 -------------------------------------------------- 13
8.3. Error Code Table 1 ------------------------------------------------------ 16
9 Assembling and Disassembling ........................................... 17
9.1. Caution ------------------------------------------------------------------------ 17
9.2. Disassembly flow chart ................................................. 1g
9.3. Main Components & P.C.B. Locations .......................... 19

9.4. Disassembly of Rear Cabinet -----------------
9.5. Disassembly of Panel P.C.B. 8. LED P.C.B
9.6. Disassembly of Main P.C.B., Sensor P.C.B. & Tuner

P.C.B. ----------------------------------------------------------------------- 20
9.7. Disassembly of Switch P.C.B. and Traverse Unit ----------- 21
9.8. Disassembly of Power Switch P.C.B. & Tact Switch P.C.B.

----------------------------------------------------------------------------------- 21

9.9. Replacement of Traverse Cover ----------------------------------- 22
9.10. Disassembly of CD Servo P.C.B. ---------------------------------- 23
9.11. Disassembly of Motor Unit & Motor P.C.B --23

9.12. Disassembly of CD Block & CD Lid
9.13. Disassembly of Speakers -----------

10 Service Fixture and Tools ----------------------------------------------------- 29

Page
11 Service Positions .................................................................. 29
11.1. Check and Repair of CD Servo P.C.B. .......................... 30

11.2. Check and repair of Main P.C.B., Sensor P.C.B., Tuner
P.C.B., Motor P.C.B., Panel P.C.B., LED P.C.B., Power
Switch P.C.B., Tact Switch P.C.B. & Switch P.C.B. -------- 31
12 Voltage and Waveform Chart ------------------------------------------------ 32
12.1. Main P.C.B. ------
12.2. CD Servo P.C.B
12.3. Motor P.C.B. --
12.4. Panel P.C.B. --
12.5. Tuner P.C.B. --

12.6. Waveform Chart ----------------------------------------------------------- 34
13 Wiring Connection Diagram .................................................. 35
14 Block Diagram ---------------------------------------------------------------------- 37
14.1. CD Servo --------------------------------------------------------------------- 37
14.2. Tuner ---------------------------------------

14.3. Main (1/2), Transformer & Sensor-
14.4. Main (2/2), Panel, LED, Power Switch, Tact Switch, Switch

& Motor --------------------------------------------- 40

15 Notes of Schematic Diagrams .............................................. 41
16 Schematic Diagram --------------------------------------------------------------- 43
16.1. (A) CD Servo Circuit ----------------------------------------------------- 44
16.2. (B) Tuner Circuit ---------------------------------------------------------- 45
16.3. (C) Main Circuit ------------------------- 45

16.4. (D) Panel Circuit, (E) LED Circuit, (F) Power Switch
Circuit, (G) Tact Switch Circuit & (H) Switch Circuit -------- 49
16.5. (1) Motor Circuit, (J) Sensor Circuit & (K) Transformer

Circuit ----------------------------------------------------------------- 50

17 Printed Circuit Board ............................................................ 51
17.1. (A) CD Servo P.C.B. & (B) Tuner P.C.B, ....................... 52
17.2. (C) Main P.C.B. ...... 53

17.3. (D) Panel P.C.B., (E) LED P.C.B., (F) Power Switch
P.C.B., (<3) Tact Switch P.C.B., (H) Switch P.C.B., (i)
Motor P.C.B., (J) Sensor P.C.B. & (K) Transformer P.C.B.

18 Illustration of ICS, Transistors and Diodes-

19 Terminal Function of ice ........................