Panasonic sa he 40 e service manual

Page 2

SA-HEAD E I SA-H E40 EG

Sensitivity 500 pV/m
Selectivity (at 999 kHz) 30 dB
nGENERAL

Power supply

AC 230 V to 240 V, 50 HZ
Power consumption 110 W
Dimensions (W x H x D)

430 mm x 105 mm x 385 mm

Notes:

1.8pecifications are subject to change without notice.
Mass and dimensions are approximate.
2.Tota| harmonic distortion is measured by the digital spectrum
analyzer.
Manufactured under license from Dolby Laboratories.
Dolby", Pro Logic" and the double-D symbol are trademarks of
Dolby Laboratories.

" Manufactured under license from Digital Theater System.

Mass 3.8 kg DTS and DTS Digital Surround" are trademarks of Digital Theater
Power consumption in standby mode: 1 W System.
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 ------------------------------------------------------------------ 3
1.1. General Guidelines -------------------------------------------------------- 3
1.2. Before Repair and Adjustment ---------------------------------------- 3
1.3. Protection Circuitry --------------------------------------------------------- 3

2 Prevention of Electra Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices --------------------------------- 4
3 Handling the Lead Solder ------------------------------------------------------- 4

3.1. About Lead Free Solder (PbF)-
4 Accessorie

5 Operation Procedures -

5.1. Remote Control Operation .............................................. 5
5.2. Main Unit Operation ....................................................... 7
6 New Features -------------------------------------------------------------------------- 9
6.1. Music Port --------------------------------------------------------------------- g

7 Self Diagnosis and Special Mode Setting ---------------- 10
7.1. Doctor & Service Mode (Special Mode setting) -------------- 10
7.2. Error Code Table ----------- -11

8 Assembling and Disassembling

8.1. Caution ----- -12
8.2. Disassembly Flow Chart ----------------------------------------------- 12
8.3. Main Parts Location ----------------------------------------------------- 13
8.4. Disassembly of Top Cabinet ----------------------------------------- 14
8.5. Disassembly of Rear Panel ------------------------------------------ 14
8.6. Disassembly of Front Panel ------------------------------------------ 15
8.7. Disassembly of Panel P.C.B., Music Port P.C.B. & Volume
P.C.B. ----------------

8.8. Disassembly of Main P.C.B

8.9. Disassembly of DSP P.C.B
8.10. Disassembly of AC In P.C.B.
8.11. Disassembly of Power P.C.B. --------------------------------------- 18
8.12. Disassembly of Digital Amp P.C.B. ------------------------------- 19

9 Service Position -------------------------------------------------- 21
9.1. Checking the DSP P.C.B. (Side A) & AC In P.C.B. -------- 21

Page
9.2. Checking the DSP P.C.B. (Side B) -------------------------------- 21
9.3. Checking the Panel P.C.B., Music Port P.C.B. and Volume
P.C.B. -------------------------------------------------------------------------- 22

9.4. Checking the Main P.C.B., Power P.C.B. & Digital Amp
P.C.B. -------------------------------------------------------------------------- 23
10 Voltage Measurement and Waveform Chart ------------------------- 24
10.1. Voltage Measurement -------------------------------------------------- 24

10.2. Waveform Chart
11 Wiring Diagrams

12 Block Diagram

13 Schematic Diagram --------------------------------------------------------------- 35
13.1. Notes of Schematic Diagram ---------------------------------------- 35
13.2. (A) DSP Circuit ------------------------------------------------------------ 37
13.3. (B) Main Circuit- ----------------------------------------------- 39
13.4. (C) Digital Amp Circuit -------------------------------------------------- 43
13.5. (D) Panel Circuit, (E) Volume Circuit & (F) Music Port

Circuit ------------------------------------------

13.6. (G) Power Circuit 8. (H) AC In Circuit
14 Printed Circuit Board Diagram .................

14.1. (A) DSP P.C.B. ---------------------------------------------------------- 50
14.2. (B) Main P.C.B. ------------------------------------------------------------ 51
14.3. (C) Digital Amp P.C.B. -------------------------------------------------- 52
14.4. (D) Panel P.C.B., (E) Volume P.C.B. & (F) Music Port
P.C.B. -------------------------------------------------------------------------- 53
14.5. (G) Power P.C.B. --------------------------------------------------------- 54

14.6. (H) AC In P.C.B.
15 Illustrations of lC's, Transistors & Diodes

16 Terminal Functions of Integrated Circuits
16.1. IC301 (C2CBYY000152): Microprocessor

17 Exploded Views ......................................................... 59
17.1. Cabinet Parts Location ------------------------------------------------- 59
17.2. Packaging -------------------------------------------------------------------- 60

18 Replacement Parts List ......................................................... 51