Pioneer deh 235 service manual

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(U) PIONEEIT

The Art of Entertainment
O
S e rm 0 e
DEH-48/X1M/UC
anual . Cams

HIGH POWER CD PLAYER WITH FM/AM TUNER

DEH-4B m...

D E H - 4 3 5 XIM/UC

D E H - 4 3 x1M/uc

D E H - 4 3 6 XIM/ES

DEH " 235 XIM/uc @m
D E H - 2 3 B XIM/ES mmflgmlg

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

0 The CD mechanism employed in this model is one of CX-597 series.

CONTENTS
1. SAFETY INFORMATION ............................................ 2 7. GENERAL INFORMATION ....................................... 66
2. EXPLODED VIEWS AND PARTS LIST ....................... 3 7.1 PARTS ................................................................. 66
3. SCHEMATIC DIAGRAM ........................................... 13 7.1.1 IC ................................................................ 66
4. PCB CONNECTION DIAGRAM ................................ 44 7.1.2 DISPLAY .................................................... 72
5. ELECTRICAL PARTS LIST ........................................ 54 7.2 DIAGNOSIS ........................................................ 73
6. ADJUSTMENT .......................................................... 60 7.2.1 DISASSEMBLY ......................................... 73
' 7.2.2 TEST MODE .............................................. 74
7.3 BLOCK DIAGRAM .............................................. 76
8. OPERATIONS AND SPECIFICATIONS ..................... 78

PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153, 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 Crawford Place, Singapore 0923

© PIONEER ELECTRONIC CORPORATION 1997 K-FFD. JAN. 1997 Printed in Japan

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DEH-4B,435,43,436.235,236

. CD Player Service Precautions

1. For pickup unit(CXX1230) handling, please refer 2. During disassembly, be sure to turn the power off
to"Disassemb|y"(CX-597 Service Manual CRT1829). since an internal lC might be destroyed when a con-
During replacement, handling precautions shall be nector is plugged or unplugged.
taken to prevent an electrostatic dischargeiprotection 3. Please checking the grating after changing the pickup
by a short pin). unit(see page 63).

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 81 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.