Panasonic sa ht 40 ee service manual

Page 2

Antenna terminal
nAM TUNER SECTION

Frequency range

75 Q (unbalanced)

522 kHz to 1611 kHz (9 kHz steps)
530 kHz to 1620 kHz (10 kHz steps)

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

Power supply

AC 230 to 240 V, 50 Hz
Power consumption 120 W
Dimensions (W x H x D)

430 mm x 105 mm x 385 mm

System: SC-HT40 (EE)
Main unit: SA-HT40 (EE)
Front speakers: SB-PF41 (GN)
Surround speakers: SB»PS41 (GN)
Center speaker: SB-PC40 (P)
Subwoofer: SB-W40 (P)
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.

" Manufactured under license from Dolby Laboratories.
Dolby", Pro Logic" and the double-D symbol are trademarks of
Dolby Laboratories.

Mass 3-8 k9 " Manufactured under license from Digital Theater System.
Power consumption in standby mode: 1 W DTS and DTS Digital Surround" are trademarks of Digital Theater
nSYSTEM SYSem-

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. Before Repair and Adjustment ---------------------------------------- 4
1.3. Protection Circuitry --------------------------------------------------------- 4

2 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices --------------------------------- 5
3 Handling the Lead Solder ------------------------------------------------------- 5

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

5 Operation Procedures -

5.1. Remote Control Operation ---------------------------------------------- 7
5.2. Main Unit Operation ....................................................... 8
6 New Features ------------------------------------------------------------------------ 10
6.1. Music Port ------------------------------------------------------------------- 10

---------------- 11
7.1. Doctor & Service Mode (Special Mode setting) -------------- 11
7.2. Error Code Table ----------- -12
8 Assembling and Disassembling 3

7 Self Diagnosis and Special Mode Setting

8.1. Caution ----- -13
8.2. Disassembly Flow Chart ----------------------------------------------- 13
8.3. Main Parts Location ----------------------------------------------------- 14
8.4. Disassembly of Top Cabinet ----------------------------------------- 15
8.5. Disassembly of Rear Panel ------------------------------------------ 15
8.6. Disassembly of Front Panel ------------------------------------------ 16
8.7. Disassembly of Panel P.C.B., Music Port P.C.B. & Volume

P.C.B. ----------------------------------------------------------------- 15

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.

Page
8.11. Disassembly of Power P.C.B. ....................................... 19
8.12. Disassembly of Digital Amp P.C.B. ............................... 20
9 Service Position .................................................................... 22
9.1. Checking the DSP P.C.B. (Side A) 8. AC In P.C.B. -------- 22
9.2. Checking the DSP P.C.B. (Side B) ................................ 22
9.3. Checking the Panel P.C.B., Music Port P.C.B. and Volume
P.C.B. -------------------------------------------------------------------------- 23

9.4. Checking the Main P.C.B., Power P.C.B. & Digital Amp

P.C.B.

10 Voltage Measurement and Waveform Chart

10.1. Voltage Measurement .................................................. 25
10.2. Waveform Chart ........................................................... 29
11 Wiring Diagrams ................................................................... 33
12 Block Diagram ---------------------------------------------------------------------- 35
13 Schematic Diagram --------------------------------------------------------------- 37
13.1. Notes of Schematic Diagram ........................................ 37

13.2. (A) DSP Circui
13.3. (B) Main Circui
13.4. (C) Digital Amp Circuit
13.5. (D) Panel Circuit, (E) Volume Circuit 8 (F) Music Port

Circuit -------------------------------------------------------------------------- 47
13.6. (G) Power Circuit 8. (H) AC In Circuit ---------------------------- 49
14 Printed Circuit Board Diagram ---------------------------------------------- 51
14.1. (A) DSP P.C.B. ------------------------------------------------------------ 52
14.2. (B) Main P.C.B. ------------------------------------------------------------ 53
14.3. (C) Digital Amp P.C.B. -------------------------------------------------- 54
14.4. (D) Panel P.C.B., (E) Volume P.C.B. 8. (F) Music Port
P.C.B.

14.5. (G) Power P.C.B.