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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.