Panasonic SA-PT850EE - SC-PT850 SMPS Block

Panasonic SA-PT850EE

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23.3. SC-PT850 SMPS Block

VOLTAGE

DIVIDER

SHUNT

REGULATOR

A

C

R

IC5801

FEEDBACK

PC5720

T5701

13V

-13V

18V

FAN_18V

+30V

D5801

+30V_SENSE

-30V

D5802

-30V_SENSE

OVP

Q5802/D5806

DC_18V

18V

T5751

IC5799

DFB

FEEDBACK

PC5799

VCC

IC5701

AC IN

+6V

SYS6V

L5702

+

-

C5711

VCC

REGULATOR

D5722/D5723

D5721

F1

SC-PT850 SMPS BLOCK

SA-PT850EE

112

Table of Contents

Default Chapter1
- Specifications1
- Table of Contents4
1 Safety Precautions6
- General Guidelines6
- Before Repair and Adjustment6
- Protection Circuitry6
- Safety Parts Information7
2 Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices8
3 Precaution of Laser Diode9
4 About Lead Free Solder (Pbf)10
- Service Caution Based on Legal Restrictions10
5 Handling Precautions for Traverse Unit11
- Cautions to be Taken in Handling the Optical Pickup Unit11
- Grounding for Electrostatic Breakdown Prevention11
6 Accessories13
7 Operation Procedures14
- Remote Control Key Buttons Operations14
- Main Unit Key Buttons Operations15
- Using the VIERA Link "HDAVI Control16
- Music Port Connection and Operation17
- USB Connection and Operation18
- Audio & Video Connections19
  - Television with an Hdmi Terminal19
  - Optional Audio Connection for Video Cassette Recorder or Television19
- Disc Information20
- Tips for Making Data Discs21
8 New Features22
- About HDMI22
9 Self-Diagnosis and Special Mode Setting24
- Service Mode Summary Table24
- Service Mode Table24
- DVD Self Diagnostic Function-Error Code32
- Sales Demonstration Lock Function35
- Service Precautions36
- Recovery after the DVD Player Is Repaired36
10 Assembling and Disassembling37
- Disassembly Flow Chart38
- Main Components and P.C.B. Locations39
- Disassembly of Top Cabinet40
- Disassembly of the DVD Lid (When Taking out Disc Manually)40
- Disassembly of Front Panel41
- Disassembly of Volume P.C.B41
- Disassembly of MIC P.C.B42
- Disassembly of Panel P.C.B42
- Disassembly of USB P.C.B43
- Disassembly of Scart P.C.B43
- Disassembly of Rear Panel43
- Disassembly of DVD Mechanism Unit44
- Disassembly of Relay P.C.B44
- Disassembly of DVD Module44
- Disassembly of Main45
- Replacement of Regulator IC (IC2903)45
- Disassembly of D-Amp46
- Replacement of Digital Amp IC (IC5000)47
- Disassembly of SMPS & AC-Inlet47
- Replacement of Switch Regulator IC/Diode (IC5701/D5702)48
- Replacement of Regulator Diode (D5801/D5802)48
- Replacement of Regulator Diode (D5803)49
11 Assembly and Disassembly of DVD Mechanism Unit50
- Disassembly Procedure50
- Disassembly of Traverse Unit53
12 Service Position55
- Checking & Repairing Scart55
- Checking & Repairing Panel55
- Checking & Repairing MIC55
- Checking & Repairing Main55
- Checking & Repairing D-Amp56
- Checking & Repairing DVD Module56
- Checking & Repairing SMPS57
13 Measurements and Adjustments58
- Service Tools and Equipment58
- Important Points in Adjustment58
- Storing and Handling of Test Discs58
- Optical Adjustment59
- Adjustment Procedure59
14 Abbreviations60
15 Voltage and Waveform Chart62
- DVD Module P.C.B62
- Main64
- D-Amp65
- Smps P.C.b65
- Panel & Tray Loading P.C.B66
- Scart P.C.B66
- MIC P.C.B66
- Waveform Chart67
16 Illustration of IC's, Transistors and Diodes69
17 Wiring Connection Diagram71
18 Block Diagram73
- System Control73
- DVD (Servo)74
- DVD (Audio)75
- DVD (Video)76
- DVD (Hdmi)77
- Audio78
- Audio Digital Amp79
- Power80
19 Schematic Diagram Notes81
20 Schematic Diagram83
- DVD Module (DV5/HDMI) Circuit83
- Main, Panel & MIC Circuit88
- D-Amp & SMPS Circuit94
- Scart Circuit98
- Volume, USB, AC-Inlet, Relay, Tray Loading & Optical Pickup Unit Circuit99
21 Printed Circuit Board101
- DVD Module P.C.B101
- Main P.C.B102
- Panel, Volume & MIC P.C.B103
- D-Amp & USB P.C.B104
- Smps105
- AC-Inlet, Scart, Relay & Tray Loading P.C.B106
22 Basic Troubleshooting Guide107
- Basic Troubleshooting Guide for Traverse Unit107
- Module P.C.B107
- Basic Troubleshooting Guide for HDMI AV Output108
23 Overall Block Diagram for PT850110
- SC-PT850 Simplified Block110
- SC-PT850 Power Block111
- SC-PT850 SMPS Block112
24 Terminal Function of Ics113
25 Exploded Views114
- Cabinet Parts Location115
- Packaging117
26 Replacement Parts List118
- Component Parts List119

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