Service Manuals, User Guides, Schematic Diagrams or docs for : Pioneer Car Audio DEH-P90DAB Pioneer DEH-P90DAB

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      Service                                                       DEH-P90DAB/EW



      Manual                                                                                                                                   ORDER NO.
                                                                                                                                           CRT2556

MULTI-CD/MD/DAB CONTROL DSP HIGH POWER CD PLAYER WITH RDS TUNER


DEH-P90DAB                                                                                                                                      EW,ES




- This service manual should be used together with the following manual(s):
Model No.                 Order No.         Mech. Module Remarks
CX-961                    CRT2503           H2           CD Mech. Module:Circuit Description, Mech.Description, Disassembly




CONTENTS
 1.   SAFETY INFORMATION ............................................3         7. GENERAL INFORMATION .......................................74
 2.   EXPLODED VIEWS AND PARTS LIST .......................4                      7.1 DIAGNOSIS ........................................................74
 3.   BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ...16                                        7.1.1 TEST MODE(DAB TUNER MODULE)......74
 4.   PCB CONNECTION DIAGRAM ................................40                        7.1.2 TEST MODE(CD MECHANISM MODULE) ......76
 5.   ELECTRICAL PARTS LIST ........................................52                 7.1.3 DISASSEMBLY .........................................80
 6.   ADJUSTMENT..........................................................69           7.1.4 CONNECTOR FUNCTION DESCRIPTION .......86
                                                                                  7.2 IC ........................................................................87
                                                                               8. OPERATIONS AND SPECIFICATIONS...................105


PIONEER CORPORATION             4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS SERVICE INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
PIONEER EUROPE NV Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936

C PIONEER CORPORATION 2000                                                                                         K-ZZA. OCT. 2000 Printed in Japan
DEH-P90DAB



- Service Precautions
1. For pickup unit(CXX1305) handling, please refer
   to"Disassembly"(see page 80).
   During replacement, handling precautions shall be
   taken to prevent an electrostatic discharge(protection
   by a short pin).
2. During disassembly, be sure to turn the power off
   since an internal IC might be destroyed when a con-
   nector is plugged or unplugged.
3. Please checking the grating after changing the ser-
   vice pickup unit(see page 72).
4. In the correct orientation, characters can be seen
   when viewed from the product rear side.(A wind
   blows.)
5. Since the RCA, IP and ASL cords are fixed with lock
   tie, the lock tie needs to be cut off at the time of dis-
   assembly. At the time of assembly, new lock tie is
   needed.
6. When operating with large output power, the heat
   sink becomes very hot. Be careful not to touch it. In
   particular, be careful of the heat sink on the bottom
   of a product.




2
                                                                                                   DEH-P90DAB



1. SAFETY INFORMATION
This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer.
Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair
complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty.
If you are not qualified to perform the repair of this product properly and safely; you should not risk trying to do so
and refer the repair to a qualified service technician.

1. Safety Precautions for those who Service this Unit.

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