Table Of Contents - Pioneer SC-LX85 Service Manual

5
CONTENTS
SAFETY INFORMATION.......................................................................................................................................................... 2
1. SERVICE PRECAUTIONS .................................................................................................................................................... 5
1.1 NOTES ON SOLDERING ............................................................................................................................................... 5
1.2 NOTES ON REPLACING ............................................................................................................................................... 5
1.3 CAUTION........................................................................................................................................................................ 5
1.4 NOTES ON ASSEMBLING............................................................................................................................................. 6
2. SPECIFICATIONS................................................................................................................................................................. 7
2.1 SC-57/SC-55 SPECIFICATIONS.................................................................................................................................... 7
2.2 SC-1526-K SPECIFICATIONS ....................................................................................................................................... 9
3. BASIC ITEMS FOR SERVICE ............................................................................................................................................ 11
3.1 CHECK POINTS AFTER SERVICING ......................................................................................................................... 11
3.2 PCB LOCATIONS ......................................................................................................................................................... 12
3.3 JIGS LIST ..................................................................................................................................................................... 14
4. BLOCK DIAGRAM .............................................................................................................................................................. 16
4.1 OVERALL WIRING DIAGRAM ..................................................................................................................................... 16
4.2 BLOCK DIAGRAM FOR AUDIO BLOCK ...................................................................................................................... 18
4.3 BLOCK DIAGRAM FOR DIGITAL MAIN VIDEO BLOCK ............................................................................................. 20
4.4 BLOCK DIAGRAM FOR DIGITAL MAIN AUDIO BLOCK ............................................................................................. 22
4.5 BLOCK DIAGRAM FOR VIDEO BLOCK ...................................................................................................................... 24
4.6 BLOCK DIAGRAM FOR COMPOSITE VIDEO BLOCK ............................................................................................... 25
4.7 BLOCK DIAGRAM FOR COMPONENT VIDEO BLOCK.............................................................................................. 26
4.8 BLOCK DIAGRAM FOR POWER BLOCK(1) ............................................................................................................... 28
4.9 BLOCK DIAGRAM FOR POWER BLOCK(2) ............................................................................................................... 30
5. DIAGNOSIS ........................................................................................................................................................................ 32
5.1 DIAGNOSIS FLOWCHART .......................................................................................................................................... 32
5.2 CIRCUIT DESCRIPTION.............................................................................................................................................. 42
6. SERVICE MODE ................................................................................................................................................................. 49
6.1 TEST MODE................................................................................................................................................................. 49
7. DISASSEMBLY ................................................................................................................................................................... 51
8. EACH SETTING AND ADJUSTMENT ................................................................................................................................ 72
8.1 ADJUSTMENT REQUIRED WHEN THE UNIT IS REPAIRED OR REPLACED .......................................................... 72
8.2 HOW TO SAVE AND LOAD THE SETTING USING BACKUP FUNCTION WITH USB MEMORY.............................. 73
8.3 REGION WRITING ....................................................................................................................................................... 74
8.4 HOW TO UPDATE FIRMWARE.................................................................................................................................... 75
9. EXPLODED VIEWS AND PARTS LIST............................................................................................................................... 78
9.1 PACKING SECTION ..................................................................................................................................................... 78
9.2 EXTERIOR SECTION .................................................................................................................................................. 80
9.3 REAR SECTION........................................................................................................................................................... 82
9.4 CHASSIS SECTION ..................................................................................................................................................... 84
9.5 FRONT SECTION ........................................................................................................................................................ 86
10. SCHEMATIC DIAGRAM .................................................................................................................................................... 88
10.1 AUDIO ASSY(1/3)(GUIDE PAGE) .............................................................................................................................. 88
10.2 AUDIO ASSY (2/3)...................................................................................................................................................... 94
10.3 AUDIO ASSY (3/3)...................................................................................................................................................... 96
10.4 DAC HIGH ASSY (1/2) ............................................................................................................................................... 98
10.5 DAC HIGH ASSY (2/2) ............................................................................................................................................. 100
10.6 FRONT HDMI USB ASSY ........................................................................................................................................ 102
10.7 USB RECT and MULTI CH IN(SC-57) ASSYS......................................................................................................... 104
10.8 DIGITAL MAIN ASSY (1/11) (GUIDE PAGE) ............................................................................................................ 106
10.9 DIGITAL MAIN ASSY (2/11) ..................................................................................................................................... 112
10.10 DIGITAL MAIN ASSY (3/11) ................................................................................................................................... 114
10.11 DIGITAL MAIN ASSY (4/11) ................................................................................................................................... 116
10.12 DIGITAL MAIN ASSY (5/11) ................................................................................................................................... 118
10.13 DIGITAL MAIN ASSY (6/11) ................................................................................................................................... 120
10.14 DIGITAL MAIN ASSY (7/11) ................................................................................................................................... 122
10.15 DIGITAL MAIN ASSY (8/11) ................................................................................................................................... 124
10.16 DIGITAL MAIN ASSY (9/11) ................................................................................................................................... 126
10.17 DIGITAL MAIN ASSY (10/11) ................................................................................................................................. 128
10.18 DIGITAL MAIN ASSY (11/11) ................................................................................................................................. 130
10.19 INTERFACE ASSY ................................................................................................................................................. 132
10.20 COMPONENT ASSY.............................................................................................................................................. 134
10.21 COMPOSITE ASSY................................................................................................................................................ 136
10.22 MIC HP ASSY......................................................................................................................................................... 138
10.23 DISPLAY ASSY ...................................................................................................................................................... 140
10.24 VOL and POWER SW ASSYS ............................................................................................................................... 142
5
6
SC-57
6
7
7
8
A
B
C
D
E
F
3
8