Safety Information.......................................................................................................................................................... 2

1. SERVICE PRECAUTIONS .................................................................................................................................................... 6

1.1 NOTES ON SOLDERING ............................................................................................................................................... 6

1.2 CHARGED SECTION AND HIGH VOLTAGE GENERATING POINT ............................................................................. 7

2. SPECIFICATIONS................................................................................................................................................................. 8

2.1 ACCESSORIES .............................................................................................................................................................. 8

2.2 SPECIFICATIONS ........................................................................................................................................................ 10

2.3 PANEL FACILITIES....................................................................................................................................................... 12

3. BASIC ITEMS FOR SERVICE ............................................................................................................................................ 16

3.1 CHECK POINTS AFTER SERVICING ......................................................................................................................... 16

3.2 QUICK REFERENCE ................................................................................................................................................... 17

3.3 PCB LOCATIONS ......................................................................................................................................................... 19

3.4 JIGS LIST ..................................................................................................................................................................... 20

4. BLOCK DIAGRAM .............................................................................................................................................................. 22

4.1 OVERALL WIRING DIAGRAM (1/2) ............................................................................................................................. 22

4.2 OVERALL WIRING DIAGRAM (2/2) ............................................................................................................................. 24

4.3 OVERALL BLOCK DIAGRAM (1/2) .............................................................................................................................. 26

4.4 OVERALL BLOCK DIAGRAM (2/2) .............................................................................................................................. 28

4.5 POWER SUPPLY UNIT ................................................................................................................................................ 30

4.6 50F X DRIVE ASSY...................................................................................................................................................... 32

4.7 50F Y DRIVE, 50F SCAN A and B ASSYS .................................................................................................................. 33

4.8 POWER SUPPLY BLOCK of 50F X, Y DRIVE and 50F SCAN A and B ASSYS ......................................................... 34

4.9 50F ADDRESS L and S ASSYS................................................................................................................................... 35

4.10 50F DIGITAL ASSY .................................................................................................................................................... 36

4.11 MAIN ASSY (DTV BLOCK DIAGRAM)....................................................................................................................... 37

4.12 POWER SUPPLY BLOCK of MAIN ASSY.................................................................................................................. 38

4.13 IO_AUDIO ASSY ........................................................................................................................................................ 40

4.14 LED and IR ASSYS .................................................................................................................................................... 42

5. DIAGNOSIS ........................................................................................................................................................................ 43

5.1 POWER SUPPLY OPERATION.................................................................................................................................... 43

5.2 DIAGNOSIS FLOWCHART OF FAILURE ANALYSIS .................................................................................................. 49

5.3 DIAGNOSIS OF PD (POWER-DOWN)......................................................................................................................... 72

5.4 DIAGNOSIS OF SD (SHUTDOWN) ............................................................................................................................. 76

5.5 NON-FAILURE INFORMATION .................................................................................................................................... 80

5.6 OUTLINE OF THE OPERATION .................................................................................................................................. 82

5.7 OUTLINE OF RS-232C COMMAND ............................................................................................................................ 87

5.8 LIST OF RS-232C COMMANDS .................................................................................................................................. 88

5.9 DETAILS OF EACH COMMANDS ................................................................................................................................ 97

6. SERVICE FACTORY MODE ............................................................................................................................................. 111

6.1 OUTLINE OF THE SERVICE FACTORY MODE ........................................................................................................ 111

6.2 DETAILS OF FACTORY MENU .................................................................................................................................. 119

6.3 DIGITAL TUNER SERVICE MENU............................................................................................................................. 144

7. DISASSEMBLY ................................................................................................................................................................. 146

7.1 FLOWCHART OF REMOVAL ORDER ....................................................................................................................... 146

7.2 DISASSEMBLY........................................................................................................................................................... 147

7.3 PRECAUTIONS FOR SPEAKER SYSTEM................................................................................................................ 157

8. EACH SETTING AND ADJUSTMENT .............................................................................................................................. 158

8.1 ADJUSTMENT REQUIRED WHEN THE UNIT IS REPAIRED OR REPLACED ........................................................ 158

8.2 BACKUP OF THE EEPROM (DIGITAL ASSY)........................................................................................................... 161

8.3 HOW TO CLEAR HISTORY DATA .............................................................................................................................. 164

8.4 ADJUSTMENT WHEN THE SERVICE PANEL ASSY IS REPLACED ....................................................................... 165

8.5 ADJUSTMENT WHEN THE DRIVE ASSYS ARE REPLACED.................................................................................. 176

8.6 HOW TO UPDATE USB.............................................................................................................................................. 179

8.7 ADJUSTMENT WHEN THE MAIN OR IO_AUDIO ASSY IS REPLACED.................................................................. 181

9. EXPLODED VIEWS AND PARTS LIST............................................................................................................................. 182

9.1 PACKING SECTION ................................................................................................................................................... 182

9.2 REAR SECTION......................................................................................................................................................... 184

9.3 FRONT SECTION ...................................................................................................................................................... 186

9.4 CHASSIS SECTION (1/2)........................................................................................................................................... 188

9.5 CHASSIS SECTION (2/2)........................................................................................................................................... 190

9.6 PANEL CHASSIS SECTION....................................................................................................................................... 192

9.7 MULTIBASE SECTION............................................................................................................................................... 194

9.8 PDP SERVICE ASSY ................................................................................................................................................. 196

9.9 TABLE TOP STAND.................................................................................................................................................... 198

9.10 SPEAKER SYSTEM (PACKING) .............................................................................................................................. 199

9.11 SPEAKER SYSTEM ................................................................................................................................................. 200

PDP-5020FD