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DEH-P2550/XM/ES
- CD Player Service Precautions
1. Before disassembling the unit, be sure to turn off the
power. Unplugging and plugging the connectors dur-
ing power-on mode may damage the ICs inside the
unit.
2. To protect the pickup unit from electrostatic dis-
charge during serviving, take an appropriate treat-
ment(shorting-solder) by referring to "the DISAS-
SEMBLY" on page 41.
3. After replacing the pickup unit, be sure to check the
grating.(See p.38.)
CONTENTS
SAFETY INFORMATION ............................................................................................................................................2
1. SPECIFICATIONS .......................................................................................................................................................4
2. EXPLODED VIEWS AND PARTS LIST.......................................................................................................................5
2.1 PACKING...............................................................................................................................................................5
2.2 EXTERIOR.............................................................................................................................................................6
2.3 CD MECHANISM MODULE .................................................................................................................................8
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ...................................................................................................10
3.1 BLOCK DIAGRAM ..............................................................................................................................................10
3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE) ........................................................................................12
3.3 KEYBOARD UNIT ...............................................................................................................................................18
3.4 CD MECHANISM MODULE ...............................................................................................................................20
4. PCB CONNECTION DIAGRAM ................................................................................................................................24
4.1 TUNER AMP UNIT .............................................................................................................................................24
4.2 PANEL UNIT .......................................................................................................................................................28
4.3 KEYBOARD UNIT ...............................................................................................................................................29
4.4 CD MECHANISM MODULE ...............................................................................................................................30
5. ELECTRICAL PARTS LIST ........................................................................................................................................32
6. ADJUSTMENT .........................................................................................................................................................36
6.1 CD ADJUSTMENT .............................................................................................................................................36
6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT................................................................38
6.3 ERROR MODE ....................................................................................................................................................40
7. GENERAL INFORMATION .......................................................................................................................................41
7.1 DIAGNOSIS ........................................................................................................................................................41
7.1.1 DISASSEMBLY ..............................................................................................................................................41
7.1.2 CONNECTOR FUNCTION DESCRIPTION ....................................................................................................43
7.2 PARTS .................................................................................................................................................................44
7.2.1 IC ....................................................................................................................................................................44
7.2.2 DISPLAY.........................................................................................................................................................52
7.3 OPERATIONAL FLOW CHART...........................................................................................................................53
7.4 CLEANING ..........................................................................................................................................................54
8. OPERATIONS ...........................................................................................................................................................55
