3
5
6
7
8
F
E
D
C
B
A
5
6
7
8
DEH-P550MP/XN/UC
- 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 59.
3. After replacing the pickup unit, be sure to check the
grating.(See p.56.)
CONTENTS
SAFETY INFORMATION ............................................................................................................................................2
1. SPECIFICATIONS .......................................................................................................................................................4
2. EXPLODED VIEWS AND PARTS LIST.......................................................................................................................8
2.1 PACKING(DEH-P550MP/XN/UC, DEH-P5500MP/XN/UC) ..................................................................................8
2.2 PACKING(DEH-P5550MP/XN/ES) ......................................................................................................................10
2.3 EXTERIOR...........................................................................................................................................................12
2.4 CD MECHANISM MODULE ...............................................................................................................................16
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ...................................................................................................18
3.1 BLOCK DIAGRAM ..............................................................................................................................................18
3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE) ........................................................................................20
3.3 KEYBOARD UNIT ...............................................................................................................................................26
3.4 CD MECHANISM MODULE ...............................................................................................................................28
4. PCB CONNECTION DIAGRAM ................................................................................................................................38
4.1 TUNER AMP UNIT .............................................................................................................................................38
4.2 PANEL UNIT .......................................................................................................................................................42
4.3 KEYBOARD UNIT ...............................................................................................................................................43
4.4 CD MECHANISM MODULE ...............................................................................................................................44
5. ELECTRICAL PARTS LIST ........................................................................................................................................46
6. ADJUSTMENT .........................................................................................................................................................54
6.1 JIG CONNECTION DIAGRAM ...........................................................................................................................54
6.2 CD ADJUSTMENT .............................................................................................................................................54
6.3 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT................................................................56
6.4 ERROR MODE ....................................................................................................................................................58
7. GENERAL INFORMATION .......................................................................................................................................59
7.1 DIAGNOSIS ........................................................................................................................................................59
7.1.1 DISASSEMBLY ..............................................................................................................................................59
7.1.2 CONNECTOR FUNCTION DESCRIPTION ....................................................................................................61
7.2 PARTS .................................................................................................................................................................62
7.2.1 IC ....................................................................................................................................................................62
7.2.2 DISPLAY.........................................................................................................................................................73
7.3 OPERATIONAL FLOW CHART...........................................................................................................................74
7.4 CLEANING ..........................................................................................................................................................75
8. OPERATIONS ...........................................................................................................................................................76
