Pioneer dehp 90 dab service manual

Page 1

Service
Manual * 3.,

Pioneer

DEH-PQODAB/EW

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CRT2556

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

DE H-PSODAB ewes

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DIGITAL AUDIO

. This service manual should be used together with the following manual(s):

Model No. Order No. Mech. Module Remarks
CX-QGI CRT2503 HZ CD Mech. Module:Circuit Description, MechDescription, Disassembly

. SAFETY INFORMATION ......................
. EXPLODED VIEWS AND PARTS LIST.
. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ...16

. ELECTRICAL PARTS LIST .......

1
2
3
4. PCB CONNECTION DIAGRAM ..
5
6

. ADJUSTMENT .......................................................... 69

.. 7. GENERAL INFORMATION .. .74
..4 7.1 DIAGNOSIS .. .74
7.1.1 TEST MODE(DAB TUNER MODULE) ...... 74

7.1.2 TEST MODE(CD MECHANISM MODULE) ...... 76

7.1.3 DISASSEMBLY ................................. ....80

7.1.4 CONNECTOR FUNCTION DESCRIPTION ....... 86

7.2 IC ...................................................
8. OPERATIONS AND SPECIFICATIONS

PIONEER CORPORATION

PIONEER ELECTRONICS SERVICE INC.
PIONEER EUROPE NV Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #0401, Singapore 159936

© PIONEER CORPORATION 2000

4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.

K-ZZA. OCT. 2000 Printed in Japan

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DEH-PSODAB

. Service Precautions

I. For pickup unithXXI305) handling, please refer
to"Disassembly"(see page 80).

During replacement, handling precautions shall be
taken to prevent an electrostatic dischargelprotection
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.