Pioneer dehp 56 service manual

Page 1

(U) PIONEEIT

The Art of Entertainment

Service
Manual

MULTI-CD CONTROL HIGH POWER CD PLAYER WITH ID-LOGIC TUNER

DEH-PB4 u.
DEH-PEB u.
DEH-P545 uc $15.0.
DEH-46 m.
DEH-445 u.
DEH-41 us

. See the separate manual CX-597ICRT1829) for the CD mechanism description, disassembly and circuit
description.

ORDER NO.

CRT2147

. The CD mechanism employed in this model is one of S7 series.

CONTENTS
1. SAFETY INFORMATION ........................ 7. GENERAL INFORMATION.
2. EXPLODED VIEWS AND PARTS LIST... 7.1 PARTS ...........................
3. SCHEMATIC DIAGRAM .............. 7.1.1 IC ...............
4. PCB CONNECTION DIAGRAM 7.1.2 DISPLAY...
5. ELECTRICAL PARTS LIST 7.2 DIAGNOSIS ..................
6. ADJUSTMENT .................. 7.2.1 DISASSEMBLY

7.2.2 TEST MODE....
7.3 BLOCK DIAGRAM ..
8. OPERATIONS AND SPECIFICATIONS ..................... 94

PIONEER ELECTRONIC 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 ELECTRONIC [EUROPE] N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium

PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 501 Orchard Road, #10-00, Lane Wheelock Place, Singapore 23880

© PIONEER ELECTRONIC CORPORATION 1998 K-FEA.FEB.1998 Primed in Japan

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DEH-PB45,P55,P545,4E,445,4I

. CD Player Service Precautions

1. For pickup unit(CXX1230) handling, please refer 2. During disassembly, be sure to turn the power off
to"Disassembly"(CX-597 Service Manual CRT1829)_ since an internal IC might be destroyed when a con-
During replacement, handling precautions shall be nectoris plugged or unplugged.
taken to prevent an electrostatic discharge(protection 3- Please checking the grating after changing the ser-
by a short pin). vice pickup unitlsee page 79).

1. SAFETY INFORMATION

CAUTION

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.

WARNING

Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive toxi-
cant which may cause birth defects or other reproductive harm (California Health and Safety Code, Section 25249.5).
When servicing or handling circuit boards and other components which contain lead in solder, avoid unprotected skin
contact with the solder. Also, when soldering do not inhale any smoke or fumes produced.