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Service
Manual DEH-P250/XM/UC
ORDER NO.
CRT2981
MULTI-CD CONTROL HIGH POWER CD PLAYER WITH FM/AM TUNER
DEH-P250
DEH-P2500 XM/UC, XN/UC
XM/UC, XN/UC
DEH-P25 XM/UC, XN/UC
- This service manual should be used together with the following manual(s):
Model No. Order No. Mech. Module Remarks
CX-3026 CRT2944 S10 CD Mech. Module:Circuit Description, Mech.Description, Disassembly
For details, refer to "Important symbols for good services".
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 2002 K-ZZA. OCT. 2002 Printed in Japan
1 2 3 4
A 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.
B 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
C
[ Important symbols for good services ]
D 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.
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
E
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.
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.
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
F prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed
ones should be used.
2 DEH-P250/XM/UC
1 2 3 4
5 6 7 8
CONTENTS A
SAFETY INFORMATION ............................................................................................................................................2
1. SPECIFICATIONS .......................................................................................................................................................4
2. EXPLODED VIEWS AND PARTS LIST.......................................................................................................................6
2.1 PACKING...............................................................................................................................................................6
2.2 EXTERIOR.............................................................................................................................................................8
2.3 CD MECHANISM MODULE ...............................................................................................................................12
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ...................................................................................................14
3.1 BLOCK DIAGRAM ..............................................................................................................................................14
3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE) ........................................................................................16
B
3.3 KEYBOARD UNIT ...............................................................................................................................................22
3.4 CD MECHANISM MODULE ...............................................................................................................................24
4. PCB CONNECTION DIAGRAM ................................................................................................................................28
4.1 TUNER AMP UNIT .............................................................................................................................................28
4.2 PANEL UNIT .......................................................................................................................................................32
4.3 KEYBOARD UNIT ...............................................................................................................................................33
4.4 CD MECHANISM MODULE ...............................................................................................................................34
5. ELECTRICAL PARTS LIST ........................................................................................................................................36
6. ADJUSTMENT .........................................................................................................................................................40
6.1 CD ADJUSTMENT .............................................................................................................................................40 C
6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT................................................................42
6.3 ERROR MODE ....................................................................................................................................................44
7. GENERAL INFORMATION .......................................................................................................................................45
7.1 DIAGNOSIS ........................................................................................................................................................45
7.1.1 DISASSEMBLY ..............................................................................................................................................45
7.1.2 CONNECTOR FUNCTION DESCRIPTION ....................................................................................................47
7.2 PARTS .................................................................................................................................................................48
7.2.1 IC ....................................................................................................................................................................48
7.2.2 DISPLAY.........................................................................................................................................................56 D
7.3 OPERATIONAL FLOW CHART...........................................................................................................................58
7.4 CLEANING ..........................................................................................................................................................59
8. OPERATIONS ...........................................................................................................................................................60
E
- CD Player Service Precautions
1. Before disassembling the unit, be sure to turn off the 3. After replacing the pickup unit, be sure to check the
power. Unplugging and plugging the connectors dur- grating.(See p.42.)
ing power-on mode may damage the ICs inside the
unit.
2. To protect the pickup unit from electrostatic dis-
charge during serviving, take an appropriate treat-
ment(shorting-solder) by referring to "the DISAS-
F
SEMBLY" on page 45.
DEH-P250/XM/UC 3
5 6 7 8
1 2 3 4
A 1. SPECIFICATIONS
- DEH-P250/XM/UC, DEH-P250/XN/UC
B
C
D
E
F
4 DEH-P250/XM/UC
1 2 3 4
5 6 7 8
- DEH-P2500/XM/UC, DEH-P2500/XN/UC, DEH-P25/XM/UC, DEH-P25/XN/UC
A
B
C
D
E
F
DEH-P250/XM/UC 5
5 6 7 8
1 2 3 4
A 2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
B
C
D
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.)
(1) PACKING SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
1 Cord Assy CDE7060 * 16 Battery CEX1065
E 2 Accessory Assy CEA3376 17 Carton See Contrast table(2)
3 Spring CBH1650 18 Contain Box See Contrast table(2)
4 Screw Assy CEA3445 19 Protector CHP2663
5 Fixing Screw BPZ20P060FZK 20 Protector CHP2664
6 Screw CBA1002 21-1 Owner's Manual See Contrast table(2)
* 7 Polyethylene Bag CEG-127 21-2 Installation Manual See Contrast table(2)
8 Screw CRZ50P090FTC * 21-3 Warranty Card See Contrast table(2)
9 Screw TRZ50P080FTC * 21-4 Card See Contrast table(2)
* 10 Polyethylene Bag CEG-158 * 21-5 Caution Card See Contrast table(2)
11 Handle CNC5395 22 Case Assy See Contrast table(2)
12 Holder CND1249 23 Remote Control Unit CXC1265
F 13 Holder CND1250
14 Bush CNV3930
15 Polyethylene Bag CEG1173
6 DEH-P250/XM/UC
1 2 3 4
5 6 7 8
(2) CONTRAST TABLE A
DEH-P250/XM/UC, DEH-P250/XN/UC, DEH-P2500/XM/UC, DEH-P2500/XN/UC, DEH-P25/XM/UC and
DEH-P25/XN/UC are constructed the same except for the following:
Part No.
Mark No. Symbol and Description DEH-P250/XM/UC DEH-P2500/XM/UC DEH-P25/XM/UC
17 Carton CHG4958 CHG4959 CHG4960
18 Contain Box CHL4958 CHL4959 CHL4960
21-1 Owner's Manual CRD3686 CRD3688 CRD3688
21-2 Installation Manual CRD3687 CRD3689 CRD3689
* 21-3 Warranty Card CRY1070 Not used Not used B
* 21-4 Card Not used ARY1048 ARY1048
* 21-5 Caution Card Not used Not used CRP1294
22 Case Assy CXB3520 Not used Not used
Part No.
Mark No. Symbol and Description DEH-P250/XN/UC DEH-P2500/XN/UC DEH-P25/XN/UC
17 Carton CHG4972 CHG4973 CHG4974
18 Contain Box CHL4972 CHL4973 CHL4974
21-1 Owner's Manual CRD3686 CRD3688 CRD3688 C
21-2 Installation Manual CRD3687 CRD3689 CRD3689
* 21-3 Warranty Card CRY1070 Not used Not used
* 21-4 Card Not used ARY1048 ARY1048
* 21-5 Caution Card Not used Not used CRP1294
22 Case Assy CXB3520 Not used Not used
D
- Owner's Manual, Installation Manual
Model Part No. Language
DEH-P250/XM/UC CRD3686 English, French, Spanish
DEH-P250/XN/UC CRD3687
DEH-P2500/XM/UC CRD3688 English, French, Spanish
DEH-P2500/XN/UC
DEH-P25/XM/UC CRD3689
DEH-P25/XN/UC
E
F
DEH-P250/XM/UC 7
5 6 7 8
1 2 3 4
2.2 EXTERIOR
A
B
C
D
E
F
8 DEH-P250/XM/UC
1 2 3 4
5 6 7 8
(1) EXTERIOR SECTION PARTS LIST
A
Mark No. Description Part No. Mark No. Description Part No.
1 Remote Control Unit CXC1265 46 Cover CNM6854
2 Cover CNS7068 47 Panel CNS7245
3 Screw ISS26P055FTC 48 Gear CNV5997
4 Screw BMZ30P040FZK 49 Pin CNV6486
5 Screw BSZ26P060FTC 50 Lighting Conductor CNV6487
6 Screw BSZ30P060FTC 51 Arm CNV7400
7 Screw BSZ30P200FTC 52 Arm CNV7401
8 Cord Assy CDE7060 53 Arm CNV7402
9 Cable CDE7188 54 Arm CNV7403 B
10 CD Mechanism Module(S10) CXK5600 55 Panel Unit CWM8758
11 Case CNB2793 56 Socket(CN1950) CKS3550
12 Earth Plate CNC8915 57 Connector(CN1951) CKS4462
13 Cushion CNM4870 58 Holder Unit CXB9501
14 Insulator CNM7935 59 Holder Unit CXB9502
15 Insulator CNM8174 60 Damper Unit CXB9503
16 Panel See Contrast table(2) 61 Service Panel Unit CXX1691
17 Tuner Amp Unit CWM8618 62 Screw IMS20P045FZK
18 Screw ASZ26P060FTC 63 Detach Grille Assy See Contrast table(2)
19 Screw BPZ26P080FTC 64 Screw BPZ20P100FZK C
20 Screw BSZ26P160FTC 65 Button(DISP) CAC7779
21 Fuse(10A) CEK1208 66 Button(PAUSE) CAC7780
22 FM/AM Tuner Unit CWE1646 67 Button(AUDIO) CAC7781
23 Holder CND1054 68 Button(OPEN) CAC7782
24 Pin Jack(CN351) CKB1059 69 Button(VOLUME) CAC7783
25 Plug(CN981) CKM1376 70 Button(SELECT) CAC7784
26 Connector(CN101) CKS3408 71 Button(SRC) CAC7785
27 Plug(CN831) CKS3537 72 Button(FUNC) CAC7786
28 Connector(CN721) CKS3835 73 Button(1-6) CAC7787
D
29 Antenna Jack(CN401) CKX1056 74 Button(CLK, EQ) CAC7808
30 Holder CND1237 75 Spring CBH2630
31 Holder CND1352 76 Cover CNS7269
32 Insulator CNM8245 77 Lighting Conductor CNV7421
33 Heat Sink CNR1668 78 Rubber CNV7422
34 Terminal(CN402) VNF1084 79 Keyboard Unit See Contrast table(2)
35 Holder Unit See Contrast table(2) 80 LCD(LCD1901) See Contrast table(2)
36 Chassis Unit CXB9528 81 Connector(CN1901) CKS4524
37 Button(EJECT) CAC7752 82 Holder CNC9757
38 Screw(M2x2) CBA1176 83 Sheet CNM7647 E
39 Washer CBF1038 84 Cushion CNM8092
40 Spring CBH2650 85 Connector CNV6440
41 Spring CBH2651 86 Lighting Conductor CNV7495
42 Spring CBH2652 87 Grille Unit See Contrast table(2)
43 Spring CBH2653 88 Transistor(Q752, 901, 911) 2SD2375
44 Spring CBL1512 89 IC(IC301) PAL007A
45 Holder CND1254 90 IC(IC1902) TSOP4840SB1
91 Holder See Contrast table(2)
92 Screw See Contrast table(2)
93 Choke Coil(L981) CTH1280 F
DEH-P250/XM/UC 9
5 6 7 8
1 2 3 4
(2) CONTRAST TABLE
A
DEH-P250/XM/UC, DEH-P250/XN/UC, DEH-P2500/XM/UC, DEH-P2500/XN/UC, DEH-P25/XM/UC and
DEH-P25/XN/UC are constructed the same except for the following:
Part No.
Mark No. Symbol and Description DEH-P250/XM/UC DEH-P2500/XM/UC DEH-P25/XM/UC
16 Panel CNS6935 CNS7309 CNS7309
35 Holder Unit CXB6681 CXB6681 CXB6681
63 Detach Grille Assy CXB9601 CXB9602 CXB9603
79 Keyboard Unit CWM8635 CWM8635 CWM8636
80 LCD(LCD1901) CAW1759 CAW1759 CAW1760
B
87 Grille Unit CXB9629 CXB9630 CXB9631
91 Holder Not used Not used CNV7619
92 Screw Not used Not used BMZ40P140FTC
Part No.
Mark No. Symbol and Description DEH-P250/XN/UC DEH-P2500/XN/UC DEH-P25/XN/UC
16 Panel CNS6935 CNS7309 CNS7309
35 Holder CNC8659 CNC8659 CNC8659
C 63 Detach Grille Assy CXB9601 CXB9602 CXB9603
79 Keyboard Unit CWM8635 CWM8635 CWM8636
80 LCD(LCD1901) CAW1759 CAW1759 CAW1760
87 Grille Unit CXB9629 CXB9630 CXB9631
91 Holder Not used Not used CNV7619
92 Screw Not used Not used BMZ40P140FTC
D
E
F
10 DEH-P250/XM/UC
1 2 3 4
5 6 7 8
A
B
C
D
E
F
DEH-P250/XM/UC 11
5 6 7 8
1 2 3 4
2.3 CD MECHANISM MODULE
A
B 1
1
1
2
1
C
2
1
2 1
1
2
1
D 1
3
1
2
2
1 1
1
1
1GEM1024
2GEM1045
3GEM1035
E
F
12 DEH-P250/XM/UC
1 2 3 4
5 6 7 8
- CD MECHANISM MODULE SECTION PARTS LIST
A
Mark No. Description Part No. Mark No. Description Part No.
1 CD Core Unit(S10) CWX2708 46 Rack CNV7199
2 Connector(CN101) CKS4182 47 Holder CNV7201
3 Connector(CN701) CKS4188 48 Holder CNV7202
4 Screw BMZ20P035FTC 49 Arm CNV7203
5 Screw BSZ20P040FTC 50 Gear CNV7207
6 Screw(M2x4) CBA1362 51 Gear CNV7208
7 Screw(M2x3) CBA1511 52 Gear CNV7209
8 Screw(M2x3) CBA1527 53 Gear CNV7210 B
9 Washer CBF1037 54 Gear CNV7211
10 Washer CBF1038 55 Gear CNV7212
11 Washer CBF1060 56 Rack CNV7214
12 Spring CBH2390 57 Arm CNV7215
13 Spring CBH2606 58 Arm CNV7216
14 Spring CBH2607 59 Guide CNV7217
15 Spring CBH2608 60 Roller CNV7218
16 Spring CBH2609 61 Gear CNV7219
17 Spring CBH2610 62 Arm CNV7221
18 Spring CBH2611 63 Arm CNV7220 C
19 Spring CBH2612 64 Arm CNV7222
20 Spring CBH2613 65 Damper CNV7313
21 Spring CBH2614 66 Damper CNV7314
22 Spring CBH2615 67 Arm CNV7341
23 Spring CBH2616 68 Arm CNV7342
24 Spring CBH2617 69 Guide CNV7360
25 Spring CBH2620 70 Guide CNV7361
26 Spring CBH2621 71 Holder CNV7437
27 Spring CBH2641 72 Arm CNV7444 D
28 Spring CBH2642 73 Gear CNV7595
29 Spring CBH2643 74 Damper CNV7618
30 Spring CBH2659 75 Motor Unit(M1) CXB6007
31 Spring CBH2688 76 Chassis Unit CXB8728
* 32 Spring CBL1614 77 Screw Unit CXB8729
33 Shaft CLA3845 78 Gear Unit CXB8731
34 Frame CNC9962 79 Arm Unit CXB8732
35 Frame CNC9963 80 Arm Unit CXB8735
36 Bracket CNC9966 81 Arm Unit CXB8852
37 Bracket CNC9967 82 Motor Unit(M2) CXB8933 E
38 Arm CNC9968 83 Bracket CNC9985
39 Arm CNC9973 84 Screw JFZ20P020FTC
40 Lever CNC9983 85 Screw(M2x5) EBA1028
41 Lever CNC9984 86 Screw JFZ20P020FTC
42 Sheet CNM8134 87 Screw JGZ17P022FTC
43 Collar CNV6906 88 Washer YE15FTC
44 Guide CNV6925 89 Washer YE20FTC
45 Arm CNV7198 90 Pickup Unit(Service)(P10) CXX1641
91 Screw IMS26P030FMC
F
DEH-P250/XM/UC 13
5 6 7 8
1 2 3 4
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
A
A TUNER AMP UNIT
VDD
7 6 13 5 10 9 8 11 14 18 19 20 21
FM/AM TUNER UNIT
WC
CE2
ROM_VDD
SL
DI
CK
CE1
NC
DO
NC
NC
NC
NC
IC 3 EEPROM IC 5
5.0V 5V 3.3V
OSC LPF
B ANTENNA CN401
AM ANT FMRF
1
1 ATT
2 Rch
24
IC 2
IC 1 2.5V
FM ANT
3 3.3V
ATT Lch
23
FMRF MIXER, IF AMP DET, FM MPX
RF adj
ANT adj
T51 CF52
CF51
AUDIOGND
OSCGND
IC 4
VDD_3.3
RFGND
DGND
3.3V 3.3V 2.5V 2.5V
C
VCC
NC
2 12 15 22 16 4 17
TUN 3.3V TUN L 3
SYS 8.4V BUS+L BUS+L 5
BUS-L BUS-L 6
CN101 CD L 4
7
11
5
BUZZER EVST,EVCK,EVDT
1
8
IP-BUS DRIVER 100
BUS- PEE
1 TX 86
PICKUP UNIT 5
IC 101 TX
(SERVICE)(P10) D CD CORE UNIT(S10) BUS+
6 HA12187FP 2 RX
8
85
RX mute
37
IPPW 24
CN101 CN701 IPPW
LASER Q101 CN721
D DIODE LD+
14
1
LD LOUT
20 LOUT
8 14
MD 2 23 21
5 PD SYSPW
xtal
Q101
AC, F, E, BD X201
HOLOGRAM BU 16
24 X1
UNIT SERVO XTAL X601
CONTROL, SYSTEM CONTROLLER
FOP FOP 71 15
FOCUS ACT. 1 DSP, X2
TOP TOP ASENBO
MONITOR TRACKING ACT. 4 LPF, DAC IC 601(2/2)
Q601
DIODE IC 722 PE5341C
Q102 83
AVREF V
12 XSI 2 4 66
12 FD, TD, SD, MD IC 201 SO 16 6 XSI
13
FOP UPD63712GC 59
CDLOEJ 22
TOP 42 adpw
LIMIT TC7SET08FU 61
CONT
SPINDLE
ACT,MOTOR 79
MOTOR M DRIVER DSCSNS
FLPILM
9
HOME CLMP 63
16 XTALEN 8
SOP
15 80 VDSENS ejectin
SOM
17
LOADING/ CARRIAGE LCOM
M 18 22 LOEJ
VDCONT
MOTOR LCOP LOEJ 5 17
swvdd
ILMPW
dsens
KYDT
DPDT
9 CONT
CONT 7 15 BU
64 95 90 96 41 20
IC 301
E BA5996FP