Panasonic sa ht 850 gc service manual

Page 2

Sampling frequency
CD

MP3

DVD

Bitrate

MP3

Decoding

Pick up

Beam Source
Wavelength
CDNCD

DVD

Number of channels
Frequency response
Wow and flutter

44.1 kHz
44.1 kHz, 43 kHz

192 kHz (Audio)

43 kHz, 96 kHz (Video)

32-320 kbps
16/20/24 bit linear

Semiconductor Laser

780 nm

658 nm

5.1 ch (FL, FR, SL, SR, C, SW)
20 Hz-20 kHz (+1, -2dB)

Less than possible

measurement data
Digital filter 8 fs

D/A converter Delta sigma DAC

I General

Power Supply AC 110V/127V/220-230V/240V,
50/60 Hz

Power consumption 25 W (SA-HT850) 250 W (SB-
WA340)

Dimensions (W x H x D) 430 x 52 x 390 mm

Mass 3.3 kg

I System

SC-HT850 (GO) Main unit: SA-HTBSO (610)
Satellite speakers: SB-HT900 (P)

Active subwoofer: SB-WA340 (608)

Power consumption in standby mode (Subwoofer): 0.9 W

Note:

1. Specifications are subiect 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 prolessional 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 Powering Up of the Main Unit ................................................. 4
1.1. Checking Player with Active Subwoofer .......................... 4

1.2. Using of Power Jig ......................................................... 4

2 SAFETY PRECAUTIONS -------
2.1. GENERAL GUIDELINES

3 Handling the Lead Solder ------------------------------------------------------- 6
3.1. About lead free solder (PbF) ------------------------------------------ 6
4 Before Repair and Adjustment ----------------------------------------------- 6

5 Protection ClrcuItry>
5 Accessories ..........

7 Control Reference ------------------------------------------------------------------- s

8 Disc Infon'nation --------------------------------------------------------------------- 9
9 Prevention of Electro Static Discharge (ESD) to

Electrostatically Sensitive (ES) Devices

10 Precautlon 01 Laser Diode

11 Cautions to Be Taken When Handling Optical Plckup --13
11,1. Handling Optical Pickup ----------------------------------------------- 13
11.2. Cautions to Be Taken During Replacement of Optical

Pickup -------------------------------------------------------------------- 14
11.3. Grounding for Preventing Electrostatic Destruction
.................................................................... 14

12 Disassembly and Main Component Replacement Procedures
and Operational Check --------------------------------------------------------- 15

12.1. Disassembly flow chart
12.2. P.C.B. Positions

Page
12.3. The Top Cabinet ---------------------------------------------------------- 17
12.4. The Rear Panel ----------------------------------------------------------- 17

12.5. Replacement of Tuner Pack Unit and Interface PCB ----- 18
12.6. The DVD Module (2) PCB and BE Bracket A & B
12.7. The DVD Mecha Unit --------------------------------------
12.8. The Front Panel ----------------------------------------------------------- 20
12.9. Replacement of the Volume PCB and Sensor PCB ------- 21
12.10. Replacement of the Main, Panel, Power Supply and
TVNCR PCB --------------------------------------------------------------- 21
12.11. Checking the Panel PCB, DVD Module (1) PCB, DVD
Module (2) PCB side A, Buffer-AMP PCB, Sensor PCB
and Volume PCB --------------------------------------------------------- 22
12.12. Checking the Main, DVD Module (2) Side B, Power Supply
and TVNCR PCB ----------------------------------
12.13. Disassembly and Assembly Mechanism Un

13 Optical Plckup Self-Diagnosis and Replacement Procedure-431
13.1. Self-diagnosis -------------------------------------------------------------- 31
13.2. Cautions to Be Taken During Replacement of Optical

Pickup and Spindle Motor 32

14 Sell-Diagnosis Function -- 33
14.1. Automatic Displayed Error Codes 33
14.2. Memonzed Error Codes ----------------------------------------------- 33

34
34
34

14.3. Mode Table 1 ---------
14.4. DVD/CD Self-Diagnosis Error Code Description
14.5. Error Codes Stored During No Play --