background image
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
K-ZZD. DEC. 2001 Printed in Japan
- This service manual should be used together with the following manual(s):
Model No.
Order No.
Mech. Module Remarks
CX-3007
CRT2820
S9MP3
CD Mech. Module:Circuit Description, Mech.Description, Disassembly
CONTENTS
1. SAFETY INFORMATION ............................................3
2. EXPLODED VIEWS AND PARTS LIST .......................4
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ...16
4. PCB CONNECTION DIAGRAM ................................42
5. ELECTRICAL PARTS LIST ........................................50
6. ADJUSTMENT..........................................................62
7. GENERAL INFORMATION .......................................71
7.1 DIAGNOSIS ........................................................71
7.1.1 DISASSEMBLY .........................................71
7.1.2 CONNECTOR FUNCTION DESCRIPTION .......75
7.2 IC ........................................................................77
7.3 OPERATIONAL FLOW CHART ...........................89
7.4 CLEANING ..........................................................90
8. OPERATIONS AND SPECIFICATIONS.....................91
For details, refer to "Important symbols for good services".
ORDER NO.
CRT2783
Service
Manual
DEH-P740MP/XN/UC
MULTI-CD CONTROL HIGH POWER CD/MP3 PLAYER WITH FM/AM TUNER
DEH-P740MP
XN/UC
DEH-P7400MP XN/UC
DEH-P7450MP XN/ES


background image
2
DEH-P740MP,P7400MP,P7450MP
- CD Player Service Precautions
1. For pickup unit(CXX1550) handling, please refer
to"Disassembly"(see page 71)
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 65).
[ 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.


background image
3
DEH-P740MP,P7400MP,P7450MP
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


background image
4
DEH-P740MP,P7400MP,P7450MP
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING (DEH-P740MP/XN/UC, DEH-P7400MP/XN/UC)
17
22
20
1
15
19
21
18
3
14
12
13
11
5
9
7
10
6
8
16
2
4


background image
5
DEH-P740MP,P7400MP,P7450MP
1 Cord Assy
CDE6438
2 Remote Control Unit
CXB8743
3 Accessory Assy
CEA2773
4 Spring
CBH1650
5 Screw Assy
CEA2796
6 Screw
BPZ20P060FZK
7 Screw
CBA1002
*
8 Polyethylene Bag
CEG-127
9 Screw
CRZ50P090FMC
10 Screw
TRZ50P080FMC
*
11 Polyethylene Bag
CEG-158
12 Handle
CNC5395
13 Earth Plate
CNC9450
14 Bush
CNV3930
15 Polyethylene Bag
CEG1173
*
16 Battery
CEX1065
17 Carton
See Contrast table(2)
18 Contain Box
See Contrast table(2)
19 Protector
CHP2251
20 Protector
CHP2252
21-1 Owner's Manual
See Contrast table(2)
21-2 Installation Manual
See Contrast table(2)
*
21-3 Caution Card
CRP1207
*
21-4 Warranty Card
See Contrast table(2)
*
21-5 Card
See Contrast table(2)
21-6 Polyethylene Bag
CEG1116
22 Case Assy
CXB3520
Mark No. Description
Part No.
Mark No. Description
Part No.
- Owner's Manual, Installation Manual
Model
Part No.
Language
DEH-P740MP/XN/UC
CRD3509
English, French
CRD3526
English, French
DEH-P7400MP/XN/UC
CRD3510
English, French
CRD3527
English, French
(2) CONTRAST TABLE
DEH-P740MP/XN/UC and DEH-P7400MP/XN/UC are constructed the same except for the following:
Part No.
Mark No. Symbol and Description DEH-P740MP/XN/UC
DEH-P7400MP/XN/UC
17 Carton
CHG4612
CHG4611
18 Contain Box
CHL4612
CHL4611
21-1 Owner's Manual
CRD3509
CRD3510
21-2 Installation Manual
CRD3526
CRD3527
* 21-4 Warranty Card
CRY1070
Not used
* 21-5 Card
Not used
ARY1048
(1) PACKING SECTION PARTS LIST (DEH-P740MP/XN/UC, DEH-P7400MP/XN/UC)
NOTE:
- Parts marked by "*" are generally unavailable because they are not in our Master Spare Parts List.
- Screws adjacent to
mark on the product are used for disassembly.
- For the applying amount of lubricants or glue, follow the instructions in this manual.
( In the case of no amount instructions, apply as you think it appropriate.)