Panasonic SA-PT750PC - SC-PT750 SMPS Circuit Block

Panasonic SA-PT750PC

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23.2. SC-PT750 SMPS Circuit 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

SC-PT750

L5702

+

-

C5711

VCC

REGULATOR

D5722/D5723

D5721

F1

133

SA-PT750P / SA-PT750PC

Table of Contents

Default Chapter1
- Specifications1
- Table of Contents3
1 Safety Precautions5
- General Guidelines5
- Before Repair and Adjustment5
- Protection Circuitry6
- Safety Parts Information6
- Prevention of Electro Static Discharge (ESD) to8
2 Prevention of Electro Static 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
- Wireless Surround16
- Using the EZ Sync HDAVI Control17
- Using the XMｮ Satellite Radio18
- Using the Music Port19
- About Ipod20
- Using the Ipod21
- Disc Information22
8 New Features24
- About HDMI24
- Wireless Features26
- Doctor Mode32
9 Self-Diagnosis and Special Mode Setting33
- Service Mode Summary Table33
- Service Mode Table (Main Unit)33
- Service Mode Table34
- Wireless Service Mode Summary Table43
- Service Mode Table (Wireless)44
- DVD Self Diagnostic Function-Error Code46
- Sales Demonstration Lock Function50
- Service Precautions51
10 Assembling and Disassembling52
- Disassembly Flow Chart54
- Main Components and P.C.B. Locations55
- Disassembly of Top Cabinet56
- Disassembly of Tray Lid Assembly56
  - Disassembly of Front Panel56
  - Disassembly of Panel P.C.B. & Key P.C.B57
  - Dissassembly of Tray Base Assembly57
  - Disassembly of Mechanism Base Assembly58
  - Disassembly of Rear Panel58
- Disassembly of XM Module59
- Disassembly of Wireless Adapter59
- Disassembly of Tray60
- Disassembly of D-Amp P.C.B60
- Disassembly of Digital Amp IC (IC5000)61
- Disassembly of DVD Module61
- Disassembly of Main62
- Disassembly of Regulator IC (IC2903)63
- Disassembly of SMPS & AC-Inlet63
- Disassembly of D-Port P.C.B64
- Disassembly of Switch Regulator IC (IC5701)64
- Disassembly of Regulator Diode (D5803)65
- Disassembly of Regulator Diodes (D5801 & D5802)65
- Disassembly of Regulator Diode (D5702)66
- Disassembly of Tray Guide (L) & Tray Guide (R)66
- Disassembly of Rotary Tray66
- Disassembly of Open Lock Gear67
- Disassembly of Close Lock Gear67
- Disassembly of Tray Motor68
- Disassembly of Sensor P.C.B68
- Disassembly of Traverse Unit68
- Disassembly of Pulley Gear69
- Disassembly of Loading Motor69
- Disassembly of Drive Gear (A) & Drive Gear (B)70
- Disassembly of Magnet Holder, Washer, Magnet70
  - Clamper70
- Disassembly of Support Piece, Change Lever, Slide Plate (L) & Slide Plate (R)71
- Disassembly of Cam Gear72
- Assembly of Tray Base Assembly72
11 Service Fixture and Tools73
12 Service Positions73
- Checking & Repair XM Module73
- Checking & Repair D-Port73
- Checking & Repair Panel P.C.B. & Key73
- Checking & Repair Main P.C.B74
- Checking & Repair SMPS75
- Checking & Repair D-Amp75
- Checking & Repair DVD Module75
13 Measurements and Adjustments77
- Service Tools and Equipment77
- Important Points in Adjustment77
- Storing and Handling of Test Discs77
- Optical Adjustment78
- Adjustment Procedure78
14 Abbreviations79
15 Voltage and Waveform Chart81
- DVD Module P.C.B81
- Main P.C.B83
- D-Amp P.C.B84
- Smps P.C.b84
- XM Module P.C.B85
- Panel P.C.B85
- D-Port, Tray, Loading Motor, Tray Motor & Sensor P.C.B85
- Waveform Chart86
16 Illustration of IC's, Transistors and Diodes88
17 Wiring Connection Diagram89
18 Block Diagram91
- System Control91
- DVD (Servo)92
- DVD (Video/Audio)93
- DVD Interface94
- Audio95
- Audio Digital Amp96
- Power97
19 Schematic Diagram Notes99
20 Schematic Diagram101
- DVD Module (DV5/HDMI) Circuit101
- XM Module & Main Circuit106
- D-Port & Panel Circuit111
- D-Amp & SMPS Circuit113
- Tray, Key, Wireless Adapter, AC-Inlet & Loading Motor117
  - Circuit117
- Tray Motor, Sensor & Optical Pickup Unit Circuit119
21 Printed Circuit Board121
- DVD Module P.C.B121
- XM Module, D-Port & AC-Inlet P.C.B122
- Main P.C.B123
- Panel, Key & Wireless Adapter P.C.B124
- D-Amp125
- Smps126
- Tray, Loading Motor, Tray Motor & Sensor P.C.B127
22 Basic Troubleshooting Guide129
- Basic Troubleshooting Guide for Traverse Unit129
  - Module P.C.B129
- Basic Troubleshooting Guide for HDMI AV Output130
23 Overall Block Diagram for PT750132
- SC-PT750 Main Circuit Block132
- SC-PT750 SMPS Circuit Block133
24 Terminal Function of Ics134
- IC2001 (C2CBYY000442): System Control IC134
25 Exploded Views135
- Cabinet Parts Location137
- Packaging139
26 Replacement Parts List140
- Component Parts List141

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