Pioneer CRT3820, Service Manual

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DEH-2950MP/XN/ES
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CONTENTS
SAFETY INFORMATION ..................................................................................................................................... 2
1. SPECIFICATIONS ............................................................................................................................................ 5
2. EXPLODED VIEWS AND PARTS LIST ............................................................................................................ 8
2.1 PACKING ................................................................................................................................................... 8
2.2 EXTERIOR............................................................................................................................................... 10
2.3 CD MECHANISM MODULE..................................................................................................................... 12
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM .......................................................................................... 14
3.1 BLOCK DIAGRAM ................................................................................................................................... 14
3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE).............................................................................. 16
3.3 KEYBOARD UNIT.................................................................................................................................... 22
3.4 CD MECHANISM MODULE(GUIDE PAGE) ............................................................................................ 24
4. PCB CONNECTION DIAGRAM ..................................................................................................................... 32
4.1 TUNER AMP UNIT................................................................................................................................... 32
4.2 KEYBOARD UNIT.................................................................................................................................... 36
4.3 CD CORE UNIT(S10.5COMP2)............................................................................................................... 38
5. ELECTRICAL PARTS LIST ............................................................................................................................ 40
6. ADJUSTMENT ............................................................................................................................................... 44
6.1 CD ADJUSTMENT................................................................................................................................... 44
6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT .................................................... 46
6.3 ERROR MODE ........................................................................................................................................ 48
6.4 SYSTEM MICROCOMPUTER TEST PROGRAM ................................................................................... 49
7. GENERAL INFORMATION ............................................................................................................................. 50
7.1 DIAGNOSIS ............................................................................................................................................. 50
7.1.1 DISASSEMBLY ..................................................................................................................................... 50
7.1.2 CONNECTOR FUNCTION DESCRIPTION .......................................................................................... 53
7.2 PARTS...................................................................................................................................................... 54
7.2.1 IC .......................................................................................................................................................... 54
7.2.2 DISPLAY ............................................................................................................................................... 64
7.3 OPERATIONAL FLOW CHART ............................................................................................................... 65
8. OPERATIONS ................................................................................................................................................ 66