Pioneer dehp 640 service manual

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pioneer sound. WIS/Dnsou/

Service
Manual

DEH-P640/XN/UC

ORDER NO

chzsoi

MULTI-CD CONTROL HIGH POWER CD PLAYER WITH FM/AM TUNER

DE H-P64O

DEH-P64OO
DEH-P6450 [flfigfi

DIGITAL AUDIO
. This service manual should be used together with the following manual(s):
Model No. Order No. Mech. Module Remarks
CX-977 CRT2624 59 CD Mech. Module:Circuit Description, Mech.Description, Disassembly
CONTENTS
1. SAFETY INFORMATION .. ..3 7. GENERAL INFORMATION .. .62
2. EXPLODED VIEWS AND PARTS LIST. ..4 7.1 DIAGNOSIS ................... ....62
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ...|4 7.1.1 DISASSEMBLY .................................. ....62
4. PCB CONNECTION DIAGRAM ................................ 34 7.1.2 CONNECTOR FUNCTION DESCRIPTION ....66
5. ELECTRICAL PARTS LIST ........................................ 42 7.2 IC ........................................................................ 67
6. ADJUSTMENT .......................................................... 53 7.3 OPERATIONAL FLOW CHART ....77
7.4 CLEANING ............................... ....78
8. OPERATIONS AND SPECIFICATIONS ..................... 79

For details, refer to "Important symbols for good services".

PIONEER CORPORATION
PIONEER ELECTRONICS (USA) INC.

4-1, Meguro 1-Chome, Meguro»ku, Tokyo 153-8654, Japan
P.O.Box 1760, Long Beach, CA 908014760 U.S.A.
PIONEER EUROPE NV Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #0401, Singapore 159936

© PIONEER CORPORATION 2001

K-ZZY. DEC. 2001 Printed in Japan

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DEH-P640.P6400.P6450

[ Important symbols for good services ]
In this manual, the symbols shown-below indicate that adjustments, settings or cleaning should be made securely.

When you find the procedures bearing any of the symbols, be sure to fulfill them:
1. Product safety

You should conform to the regulations governing the product (safety, radio and noise, and other regulations), and
should keep the safety during servicing by following the safety instructions described in this manual.

N

cl

Adjustments

To keep the original performances of the product, optimum adjustments or specification confirmation is indispensable.
In accordance with the procedures or instructions described in this manual, adjustments should be performed.

3. Cleaning

. t For optical pickups, tape-deck heads, lenses and mirrors used in projection monitors, and other pans requiring cleaning,
% proper cleaning should be performed to restore their performances.

\

Shipping mode and shipping screws

To protect the product from damages or failures that may be caused during transit, the shipping mode should be set or
the shipping screws should be installed before shipping out in accordance with this manual, if necessary.
.0 J

5. Lubricants, glues, and replacement parts

Appropriately applying grease or glue can maintain the product performances. But improper lubrication or applying
glue may lead to failures or troubles in the product. By following the instructions in this manual, be sure to apply the
prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed

ones should be used,

. CD Player Service Precautions n

|. For pickup unithXX1480) handling, please refer
toDisassembly"(see page 62).
During replacement, handling precautions shall be
taken to prevent an electrostatic discharge(protection
by a jumper-solder).

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 56).