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ORDER NO.
Service
Manual
PIONEER CORPORATION
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS (USA) 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 2001
SELECT
AUDIO
EQ
SFEQ
DEH-P440/XN/UC
CRT2771
MULTI-CD CONTROL HIGH POWER CD PLAYRE WITH FM/AM TUNER
DEH-P440
/XN/UC
DEH-P4400/XN/UC
DEH-P440/XN/UC
This service manual should be used together with the following manual(s):
Model No.
Order No.
Mech.Module
Remarks
CX-977
CRT2624
S9
CD Mech. Module:Circuit Description,Mech. Description,Disassembly
K-ZZU2000.printed in Japan
CONTENTS
1.SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . 3
2.EXPLODED VIEWS AND PARTS LIST . . . . . . . . . . . . . 4
3.BLOCK DIAGRAM AND SCHEMATIC . . . . . . . . . . . . . 12
4.PCB CONNECTION DIAGRAM . . . . . . . . . . . . . . . . . . 26
5.ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . 34
6.ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7.GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . 48
7.1 DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
7.1.1 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . .48
7.1.2 CONNECTOR FUNCTION DESCRIPTION . . . . .51
7.2 PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
7.2.1 IC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
7.2.2 DISPLAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
7.3 OPERATION FLOW CHART . . . . . . . . . . . . . . . . . . .63
7.4CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
8. OPERATIONS AND SPECIFICATIONS . . . . . . . . . . . .65
For details, refer to "Important symbols for good services" on the next page.
K-ZZU.2001.printed in Japan
/XN/UC


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DEH-P440/XN/UC
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B
C
D
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34
12
3
4
2
[ 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:
2. 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
For optical pickups, tape-deck heads, lenses and mirrors used in projection monitors, and other parts requiring cleaning,
proper cleaning should be performed to restore their performances.
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.
4. 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.
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.
- CD Player Service Precautions
1. For pickup unit(CXX1480) handling, please refer
to"Disassembly"(see page 48).
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 pickup
unit(see page 42).
4. In this product, because the memory capacity of the
microcomputer is insufficient, the test mode is not
installed. However grating of the pickup unit can be
confirmed.


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DEH-P440/XN/UC
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B
C
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7
8
56
7
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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
This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of
California to cause cancer, birth defects or other reproductive harm.
Health & Safety Code Section 25249.6 - Proposition 65


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DEH-P440/XN/UC
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B
C
D
12
34
12
3
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2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
PACKING PARTS LIST
NOTES : · Parts marked by "*" are generally unavailable because they are not in our Master Spare Parts List.
· Screw adjacent to
mark on the product are used for disassembly.
· For the applying amount of lobricants or glue, follow the instructions in this manual.
(In the case of no amount instructions,apply as you think it appropriate.)
"
4
7
11
3
10
9
8
6
5
16
2
17
12
15
14
13
1
18
19
20
21
22
Mark
NO
Symbol and
Description
DEH-P440/XN/UC
DEH-P4400/XN/UC
DEH-P44/XN/UC
1-1
Owner's Manual
CRD3542
CRD3543
CRD3543
1-2
Installation Manual
CRD3556
CRD3557
CRD3557
*
1-3
Card
Not used
ARY1048
ARY1048
*
1-4
Warranty Card
CRY1070
Not used
Not used
1-5
Polyethylene Bag
CEG1116
CEG1116
CEG1116
2
Cord Assy
CDE6436
CDE6436
CDE6436
3
Spring
CBH1650
CBH1650
CBH1650
4
Screw Assy
CEA2796
CEA2796
CEA2796
5
Screw
CBA1002
CBA1002
CBA1002
*
6
Polyethylene Bag
CEG-127
CEG-127
CEG-127


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DEH-P440/XN/UC
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B
C
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8
56
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Owner's Manual,Installation Manual
7
Screw
CRZ50P090FMC
CRZ50P090FMC
CRZ50P090FMC
8
Screw
TRZ50P080FMC
TRZ50P080FMC
TRZ50P080FMC
*
9
Polyethylene Bag
CEG-158
CEG-158
CEG-158
10
Handle
CNC5395
CNC5395
CNC5395
11
Bush
CNV3930
CNV3930
CNV3930
12
Polyethylene Bag
CEG1173
CEG1173
CEG1173
13
Carton
CHG4557
CHG4553
CHG4556
14
Contain Box
CHL4557
CHL4553
CHL4556
15
Protector
CHP2251
CHP2251
CHP2251
16
Protector
CHP2252
CHP2252
CHP2252
17
Case Assy
CXB3520
CXB3520
Not used
18
Screw
BPZ20P060FZK
BPZ20P060FZK
BPZ20P060FZK
19
Remote Control Unit
CXB8743
CXB8743
CXB6797
*
20
Battery
CEX1065
CEX1065
CEX1065
21
Accessory Assy
CEA2773
CEA2773
CEA2773
22
Earth Plate
CNC9450
CNC9450
CNC9450
Mark
NO
Symbol and
Description
DEH-P440/XN/UC
DEH-P4400/XN/UC
DEH-P44/XN/UC
Part No.
Language
CRD3542,
CRD3543,
CRD3556,
CRD3557
English, French,Spanish