Pioneer DEH-P900R9050 User manual

PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, 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. 253 Alexandra Road, #04-01, Singapore 159936
C PIONEER ELECTRONIC CORPORATION 1999 K-ZZB. APR. 1999 Printed in Japan
ORDER NO.
CRT2324
MULTI-CD/DAB CONTROL DSP HIGH POWER CD PLAYER WITH RDS TUNER
DEH-P900R UC
Service
Manual
CONTENTS
1. SAFETY INFORMATION ............................................2
2. EXPLODED VIEWS AND PARTS LIST.......................3
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ...10
4. PCB CONNECTION DIAGRAM ................................32
5. ELECTRICAL PARTS LIST ........................................44
6. ADJUSTMENT..........................................................54
7. GENERAL INFORMATION .......................................58
7.1 DIAGNOSIS ........................................................58
7.1.1 TEST MODE..............................................58
7.1.2 DISASSEMBLY .........................................62
7.2 IC ........................................................................67
8. OPERATIONS AND SPECIFICATIONS.....................83
-See the separate manual CX-916(CRT2300) for the CD mechanism description, disassembly and circuit
description.
-The CD mechanism employed in this model is one of S8 series.
DEH-P900R/UC
DEH-P9050 ES
MULTI-CD CONTROL DSP HIGH POWER CD PLAYER WITH FM/AM TUNER
SERVICE PRECAUTION
In the first production, the following parts had been mounted temporarily to support the microcomputer
<DEH-P900R/UC> IC601 (PD5483A): R591 (RS1/16S473J), R592 (RS1/16S102J), and IC591 (Non spare part).
When replacing IC601 PD5483A, use PD5483B as IC601, and then remove the 3 parts listed above.
<DEH-P9050/ES> IC601 (PD5484A): R591 (RS1/16S473J), R592 (RS1/16S102J), and IC591 (Non spare part).
When replacing IC601 PD5484A, use PD5484B as IC601, and then remove the 3 parts listed above.

2
DEH-P900R,P9050
-CD Player Service Precautions
1. For pickup unit(CXX1285) handling, please refer
to"Disassembly"(see page 62).
During replacement, handling precautions shall be
taken to prevent an electrostatic discharge(protection
by a short pin).
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).
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

DEH-P900R,P9050
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
8
1
22
26
21
27
25
24
28
13
18 19 7
15 101112
14
9
16
17
23
20
6
5
2
3
4
3

4
DEH-P900R,P9050
-Owner's Manual, Installation Manual
Model Part No. Language
DEH-P900R/UC CRD2965 English, French
CRD2966 English, French
DEH-P9050/ES CRD2971 English, Spanish
CRD2972 Portuguese, Arabic
CRD2973 English, Spanish, Portuguese, Arabic
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.
-PACKING SECTION PARTS LIST
Part No.
Mark No. Description DEH-P900R/UC DEH-P9050/ES
1 Cord Assy CDE5854 CDE5854
2 Base Assy CEA2426 CEA2426
* 3 Base CNS5031 CNS5031
* 4 Sheet CZA3371 CZA3371
5 Polyethylene Bag CZE3188 CZE3188
6 Microphone Assy CPM1022 CPM1022
7 Spring CBH-865 CBH-865
8 Case Assy CXB3520 CXB3520
9 Screw BMZ50P060FMC BMZ50P060FMC
10 Screw CBA-102 Not used
11 Screw CBA1002 CBA1002
12 Screw CBA1120 CBA1120
* 13 Polyethylene Bag CEG-127 CEG-127
14 Screw CMZ50P060FMC CMZ50P060FMC
15 Nut NF50FMC Not used
* 16 Polyethylene Bag CEG-158 CEG-158
17 Handle CNC5395 CNC5395
18 Strap CNF-111 Not used
19 Bush CNV1917 CNV1917
20-1 Polyethylene Bag CEG1116 CEG1116
20-2 Owner’s Manual CRD2965 CRD2971
20-3 Owner’s Manual Not used CRD2972
20-4 Installation Manual CRD2966 CRD2973
* 20-5 Caution Card CRP1207 CRP1207
* 20-6 Warranty Card CRY1070 Not used
* 20-7 Caution Card CRP1209 CRP1210
21 Polyethylene Bag CEG1185 CEG1088(Cover)
22 Air Cushioned Bag CEG1192 CEG1192
23 Battery CEX1006 CEX1006
24 Carton CHG3772 CHG3770
25 Contain Box CHL3772 CHL3770
26 Protector CHP2032 CHP2032
27 Protector CHP2033 CHP2033
28 Remote Control Assy CXB3875 CXB3875

5
DEH-P900R,P9050
2.2 EXTERIOR
A
A
BB
24 24 24
17
122
2
16
11
1
125
1
2
5
8
11
14
14
12
12
123 105
101
103
104
100
60
80
70
65
72
102
89
99
71
61
97
29
94
91
96
66
66
73
81
84
67
68
66
66
78
78
87
86
75
67
98
91
74 69
85
66
74
23
110 115 107
111
113
120 112
109
119
25 118
108
106
108
121
28
22
2
2
59
27
27
26
108
117
116
114
69
86
62
62
62
82
95
76
76 77
127 77
83
63
90
93
92
79
64
88
124
6
21
3(1/2)
7
15
2
19
22
20
18
53
52
50
48
10
34
33
13
41
33
38
37
32
55
45
58
57
56
54
30
31 51
9
49
35
44
40
42 36
46
47
39
3
(2/2)
126
126
127
127
127
127
127
43
4
128

6
DEH-P900R,P9050
1 Screw BSZ26P060FMC
2 Screw BSZ30P050FMC
3 Cord CDE5536
4 Cord Assy CDE5840
5 Cord Assy CDE5842
6 Cord Assy See Contrast table(2)
7 Connector CDE5846
8 Cord Assy CDE5854
9 IC(IC301) PAL005A
10 Transistor(Q803,921,998) 2SD2396
11 Fuse(10A) CEK1136
12 Cap CNS1472
13 IC(IC971) NJM7805FA
14 Resistor RS1/2PMF102J
15 Antenna Cable CDH1256
16 Case CNB2426
17 Holder CNC6798
18 Earth Terminal See Contrast table(2)
19 Holder CNC8170
20 Spacer See Contrast table(2)
21 Cushion CNM6065
22 Cushion CNM6387
23 Panel See Contrast table(2)
24 Cap CNV2680
* 25 PCB CNP5508
26 Screw BSZ30P200FMC
27 Screw CBA1447
28 Insulator CNM6135
29 Cover CNM6489
30 Tuner Amp Unit See Contrast table(2)
31 Screw BMZ26P160FMC
32 Clamper CEF1004
33 Clamper CEF1008
34 Clamper CEF1009
35 Plug(CN901) CKM1278
36 Plug(CN141) CKS-766
37 Plug(CN251) CKS-783
38 Plug(CN131) CKS-784
39 Plug(CN851) CKS-786
* 40 Plug(CN101) CKS1058
41 Connector(CN801) CKS1532
42 Connector(CN991) CKS1960
43 Connector(CN681) CKS3597
44 Connector(CN351) CKS3606
45 Connector(CN252) CKS3781
46 Mini Pin Jack(CN451) CKX1046
47 Holder See Contrast table(2)
48 Holder CNC8168
49 Holder CNC8169
50 Insulator See Contrast table(2)
51 Heat Sink CNR1535
52 FM/AM Tuner Unit CWE1501
53 Holder CNC7532
54 DSP Unit CWX2323
55 Connector(CN3001) CKS3782
56 Case CNC8166
57 Case CNC8167
58 Insulator CNM6130
59 Chassis Unit CXB3556
60 Panel Assy CXB3578
61 Screw BMZ20P030FMC
62 Screw CBA1154
63 Screw BPZ20P060FMC
64 Screw CBA1060
65 Screw CBA1061
66 Screw CBA1082
67 Screw CBA1430
68 Screw CBA1454
69 Spring CBH2130
70 Cord CDE5856
71 Cord CDE5960
72 Mini Jack(CN4602) CKN1015
73 Connector CKS3997
74 Roller CLA3583
75 Frame CNC8201
76 Spacer CNM6155
77 Spacer CNM6156
78 Spacer CNM6419
79 PCB CNP5321
80 PCB CNP5341
81 PCB CNP5355
82 Panel CNS5232
83 Lighting Conductor CNV5605
84 Cover CNV5610
85 Guide CNV5672
86 Guide CNV5696
87 Rack CNV5697
88 Gear CNV5698
89 Gear CNV5761
90 Torque Limiter Unit CNV5762
91 Holder CNV5763
92 Switch(S951) CSN1012
93 Switch(S952) CSN1022
94 Arm Unit CXB3574
95 Frame Unit CXB3575
96 Holder Unit CXB3576
97 Bracket Unit CXB3577
98 Arm Unit CXB3866
99 Motor(M951) CXM1085
100 ASL Unit CWX2322
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.

DEH-P900R,P9050
7
101 Screw BSZ30P055FMC
102 Cord Assy CDE5845
103 Plug(CN4501) CKS-784
104 Case CNB2299
105 Case CNB2300
106 Detach Grille Assy See Contrast table(2)
107 Screw BPZ20P060FMC
108 Screw BPZ20P080FZK
109 Button( ) See Contrast table(2)
110 Button(D) CAC5891
111 Button(SOURCE) See Contrast table(2)
112 Button( ) See Contrast table(2)
113 Button(EQ) See Contrast table(2)
114 Button(1-6) See Contrast table(2)
115 Housing CNV5606
116 Keyboard Unit CWM6226
117 Connector(CN1902) CKS3995
118 Connector(CN1901) CKS3996
119 OEL Module MXK8002
120 Grille Unit See Contrast table(2)
121 Cover Unit See Contrast table(2)
122 Case Assy CXB3520
123 Remote Control Assy CXB3875
124 Battery Cover CNS5032
125 CD Mechanism Module(S8) CXK5252
126 Washer 2-1816-0035-D2-00
127 Washer 2-1821-0045-D2-00
128 Cord Assy See Contrast table(2)
Mark No. Description Part No. Mark No. Description Part No.
(2) CONTRAST TABLE
DEH-P900R/UC and DEH-P9050/ES are constructed same except for the following:
Part No.
Mark No. Description DEH-P900R/UC DEH-P9050/ES
6 Cord Assy CDE5843 Not used
18 Earth Terminal CNC7358 CNC6469(Holder)
20 Spacer CNM6482 CNM4870(Cushion)
23 Panel CNS5256 CSN5548
30 Tuner Amp Unit CWM6214 CWM6216
47 Holder CNC7533 Not used
50 Insulator CNM5967 Not used
106 Detach Grille Assy CXB3273 CXB3978
109 Button( ) CNC5890 CNC6126
111 Button(SOURCE) CNC5892 CNC5901
112 Button( ) CNC5893 CNC6045
113 Button(EQ) CNC5894 CNC5899
114 Button(1-6) CNC5896 CNC5911
120 Grille Unit CXB3272 CXB3982
121 Cover Unit CXB4309 CXB4310
128 Cord Assy Not used CDE5844

8
DEH-P900R,P9050
2.3 CD MECHANISM MODULE

9
DEH-P900R,P9050
Mark No. Description Part No. Mark No. Description Part No.
1 Control Unit CWX2359
2 Connector(CN802) CKS2192
3 Connector(CN801) CKS2193
4 Connector(CN701) CKS2771
5 Connector(CN101) CKS3486
6 Screw BMZ20P030FZK
7 Screw BSZ20P040FZK
8 Screw(M2×3) CBA1077
9 Screw(M2×6) CBA1489
10 Screw CBA1243
11 Screw(M2×4) CBA1362
12 Washer CBF1037
13 Washer CBF1038
14 Washer CBF1060
* 15 Washer CBF1075
16 Spring CBH2079
17 Spring CBH2117
18 Spring CBH2278
19 Spring CBH2110
20 Spring CBH2282
21 Spring CBH2114
22 Spring CBH2115
23 Spring CBH2080
24 Spring CBH2118
25 Spring CBH2161
26 Spring CBH2163
27 Spring CBH2189
28 Spring CBH2249
29 Spring CBH2260
30 Spring CBH2262
31 Spring CBL1367
32 Spring CBL1369
33 Connector CDE5531
34 Connector CDE5532
35 Shaft CLA3304
36 Screw(M2.6×6) CBA1458
37 Frame CNC7544
38 Frame CNC7545
39 Lever CNC7546
40 Arm CNC7739
41 Bracket CNC7798
42 Plate CNC8090
43 Spacer CNM3315
44 Sheet CNM6170
45 Cushion CNM6204
46 Sheet CNM6215
47 Ball CNR1189
48 Belt CNT1086
49 Roller CNV4509
50 Arm CNV5246
51 Arm CNV5247
52 Arm CNV5248
53 Arm CNV5249
54 Guide CNV5254
55 Guide CNV5255
56 Gear CNV5257
57 Gear CNV5256
58 Guide CNV5869
59 Damper CNV5266
60 Arm CNV5359
61 Arm CNV5360
62 Arm CNV5361
63 Guide CNV5509
64 Guide CNV5510
65 Holder CNV5578
66 Guide CNV5751
67 Clamper CNV5758
68 Gear CNV5813
69 Motor Unit(M1) CXB2190
70 Screw Unit CXB2191
71 Chassis Unit CXB2192
72 Gear Unit CXB2193
73 Arm Unit CXB2194
74 Motor Unit(M2) CXB2195
75 Lever Unit CXB2553
76 Arm Unit CXB2554
77 Motor Unit(M3) CXB2562
78 Arm Unit CXB2795
79 Bracket Unit CXB4071
80 Screw JFZ20P025FMC
81 Screw JGZ17P025FZK
82 Washer YE15FUC
83 Pickup Unit(Service)(P8) CXX1285
84 Screw IMS26P030FMC
* 85 PCB CNX2982
86 Photo-transistor(Q1, 2) CPT230SX-TU
87 Connector(CN702) CKS2191
-CD MECHANISM MODULE SECTION PARTS LIST

ANT1 TV ANT2 TV RF TV
IC 3
BR9010FV
AM 2ND IF 450kHz
M
M
M
M
IC 681
TPD1018F
DFS ALARM
IC 45
NJM2
LD MD
HOLOGRAM
UNIT
FOCUS ACT
TRACKING ACT
LD+
MD
FO+
TO+
14
5
4
3
PICKUP UNIT(SERVICE)
SPINDLE
MOTOR
CARRIAGE
MOTOR
LOADING
MOTOR
1
2
3
4
3
1
2
SELECT
SENSE
DISC SENSE
IPHOTO UNIT
CN801
CN802
D803 D802 D801
VD
S802
CLAMP
58
57
55
1
2
60
10
1
28
21 9
47
31
48
CDLOAD
CDEJET
CONT
EJTSNS
DSCSNS
CLAMP
reset
AVREF
ADENA
CD5VON
VDCONT
IC 901
PE5011C
VDD
V+5 IC 701
BA05SFP IN
+5V REGULATOR
24
1
VDD
VD
Q998
Q991
B
VDD
B.U
B.U
Q851
Q852
Q853
FLAP MOTOR
CONTROL
IC 851
BA6288FS
45
FIN
FIN
OUT1
OUT2
63
14 11
FLPOPN
FLPCLS
5
4
3
3
2
1
3
2
1
2
1
CN851
CN131
CN681
Q132
Q131
VDD
DALMON
DALMON
MICSEN
Q684
Q685
FCLSSW
MOTS1
DRLC1
ST1
STARTER CUT-OFF
DOOR LOCK
ALARM SENSOR
FOPNSW
BLUE
RED
WHITE
S951
CLOSE
S952
OPEN
GMIC JACK PCB
FSWITCH
PCB
AUTOMATIC
FLAP MOTOR
ANT
GND2
CN451
1
2
ATUNER AMP UNIT
BFM/AM TUNER UNIT
27
28
FM FRONT END
Q3
Q201 Q204
AM RF
FM/AM 1ST IF 10.7MHz
T51 Q51 CF51 CF52 CF53
MIXER.IF AMP DET
IC 1
PML002A
38 39 42 44 46 63
32 19
46
6
21
COMP
34 33 41 44 11
69
70
54
65
71
75746157554533
35
22
2225 10 14 12 15 16 8 13 2
CF202
VCC
LOCL
VDD
Q401
SYS+B TUN5V B.U
DI/DO CE2 CK CE1 SDBL SL FMSD
PCE2
CK
CE1 SD2
SL
SD
PDIO
EEPROM
5
6
4
3
IC 2 PM4008A
FM MPX
POWER ON MUTE
IC 401
S-81250SGUP
CN101
IP-BUS
CONNECTOR
85
1
7
11
B.U
ASENBO
TX
RX
IPPW
1
8
2
5
6
IP-BUS DRIVER
IC 101
CA008AM
BUS2
BUS1
BUS+L
BUS–L
Q101
Q102
RDS
DECODER
IC 501
PM4009A
20
11 12
24
X501
Q501
VDD
/UC
fm/AM 81 FM/AM
SD
SL
SD_BW
TUNPCE
TUNPCK
TUNPCE2
PDIO
LOCL
ASENBO
TX
RX
IPPW
IN3_L
IN4+_L
IN4–_L
VREF
IN2_R
IN1_R
PEE
49
97
94
3
2
4
1
78
10
30
29
7
42
43
44
40
36
37
24
FLPPW
FLPPW 26
FLPOPN
34
FLPCLS
37
FOPNSW
38 FCLSSW
40
MICSENS
28
MOSENS
5
DLSENS
6
SOUT
STOUT
DLSENS
MOSENS
75
SYSTEM
CONTROLLER
IC 601(1/2)
PD5483A(/UC)
PD5484A(/ES)
EASL UNIT
MIC4501 Q4501 VR4501 ASL A
3
HCONTROL UNIT
Q101
CN101
CN702
FOP
TOP
21
A+C/F
B+D/E
98
14
15
11
LD
DATA
BCKI
LRCKI
DOUT
DATAO
BCKO
LRCKO
SCKO
LRCK
EMPH
PD
HOME
97
24
39
TD/FD
SD/MD
RF-AMP, DSP,
SERVO, DAC
IC 201
UPD63710GC
30
8
7
5
32
34
27
IC 601
PD0236AM
BIT LENGTH EXPANSION
CN701 CN991
CN251
2
1
17
15
16
18
14
11
12
2
1
10
6
8
7
5
9
11
12
21
22
13
LOUT/LRCK
ROUT/DOUT
AGND/SCKO
EMPH
CD5V
LRCK
DOUT
SCKO
SP601
ALARM
BUZZER
IC 301
BA5985FM
S801
HOME
12
16
17
11
14
13
10
9
SOP
TOP
FOP
SOM
COP
COM
LOP
LOM
FWD
REV
MUTE
ELECTRICAL V
SOURCE SELE
IC 203
PML004A
Q641
/UC
SYSTEM
CONTROLLER
IC 601(2/2)
PD5483A(/UC)
PD5484A(ES)
ASENS
BSENS
ISENS
TELIN
DRSYS
DRSENS
DRELAY
SYSPW
DALMON
MUTE
DSENS
KYDT
DPDT
RESET
OEL PW
ILMPW
SWVDD
FLPILM
A
25 24
Q901
SINGLE-CD
CONTROLLER
CD DRIVER
M951
20 3
BMUTE 59 BMUTE
10
DEH-P900R,P9050
1234
1234
D
C
B
A
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM

11
DEH-P900R,P9050
5678
5678
D
C
B
A
IC 4501
NJM2068
IC 971
NJM7805FA
ADRESS
DATA
IC 1903
RS-140
REMOTE CONTROL
SENSOR
OPT IN
SWVDD
AVCC VDD REM
KYDT
DPDT
KEYAND
OEL MODULE
CONTROLLER
IC 1901
PD5471A
ILB
SWVDD
1
4
5
7
11
2
9
8
12
9
8
6
2
11
4
5
KEY MATRIX
IC 1902
PD8051A
SWVDD
DATA ROM 25
4
97 14
1
5
TEM
OLLER
(1/2)
A(/UC)
4A(/ES)
501 ASL AMP ASL FILTER
IC 4502
NJM2068
3311
22
CN141
NOISE
4
3
2
35
8
30
45
9
12
6
8
11 36
98
37
23
28 27
78
35
3
2
35
8
30
DOUT CN252
CN252
CN3001
CN3001
SCKO
LRCK
NOISE
LIN–
EMPH
CD5V
IC 3203(1/2)
HD74HCT126FP
13
SDIN
AOUTL1
CLKO
BITCLK
LRCLK
AINL–
IC 3101
AK7714
DSP, DAC
X3101
VSTD/VDTD/VCKD LRCKK NOISE
58 74
8 10 12 9 40 41 42
59
EMPHIN
X3001
DSP CONTROLLER
IC 3001
PD5504A
DDSP UNIT
DSP5V PLL5V
DSPPW MUTERQ NGO
MCKOUT
reset
1 29 18 6 17 16
1 29 18 6 17 16
ZDFMUTERQRESET
AMP
IC 3301
NJM4580M
IC 3201
74HC393AF
3
181 1023
1
1
IC 3203(2/2)
HD74HCT126FP
12
5
12
5
FREQUENCY CONVERSION
IC 3202
TC9246F
REF CKO
CN3001 CN252
A
LOUT
DSPPW
B.U B.U
Q972 Q291
Q971
5V REG.
31
Q292 Q913 B.U
VDD
DALMON
Q911
B.U BACKUP BACKUP
GND
RL–
RL+
FL–
FL+
RL–
RL+
FL–
FL+
B.REM
B.REM
ILL
ACC
ILL
ACC
MUTE
DOOR SW
TEL1
ALARM
DOOR SW
1
2
9
11
10
12
4
3
5
8
7
6
ELECTRICAL VOLUME/
SOURCE SELECTOR
IC 203
PML004AF
TEM
OLLER
(2/2)
A(/UC)
4A(ES)
ASENS 74
BSENS 73
ISENS 23
TELIN 11
DRSYS 87
DRSENS 86
DRELAY 76
SYSPW 22
DALMON DALMON
20
MUTE 27
DSENS 47
KYDT 36
DPDT 35
RESET 12
OEL PW 46
ILMPW 44
SWVDD 45
FLPILM 43
FL 10
PV IN_L 2
Setout_L 1
RL 11
PREL 9
DZF
MUTERQ
BMUTE
POWER AMP
IC 301
PAL005A
12
14
22 4 25
5
3
21
23
FL
MUTE STBY B.REM
RF
B.U
B.U
B.U
DRELAY
DRSENS
DRSYS
TELIN
bsens
asens
ILL
Q941
Q942
Q681
Q951
Q931
Q932
Q682 Q683
Q301 MUTE
Q302
Q982
711
16
14
18
9
SWL1 RLI FLI FLO
RLO
SWLO
IC 271
PA2028A
HIGH OUT
Q353
Q355
Q351
CN351 FRONT
L CH
REAR
L CH
SUB
WOOFER
L CH
7
6
3
2
11
10
CKEYBOARD UNIT
CN1901
CN801 DSENS
EW ONLY
ILB
CN1902
OEL MODULE
MXK8002
18 17 1-15
11 13
X1901
33
34
RST
S1925
Q261
Q922
Q923Q921
Q981
B.U
B.U
SYS+B
SYSPW
Q803
Q808
Q801
Q802
VDD
B.U
Q805
Q806
Q807
B.U
B.U
B.U
RESET
IC 961
S–80735ANDZI VDD
12
Q962
RESET
B
BMUTE
SYSPW
BUFFER
BUFFER
ALARM

12
DEH-P900R,P9050
1234
1234
D
C
B
A
3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)
Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL PARTS
LIST”.
A-a A-b
A-a A-b
A-b
A-a
Large size
SCH diagram
Guide page
Detailed page
A
CN701
CN4602
S951
CSN1012
S952
CSN1022
CLOSE
OPEN
M951
AUTOMATIC
FLAP MOTOR
CXM1085
/UC
C433 100P
/ES
TUNER SIGNAL
IP-BUS SIGNAL
CD(DIGITAL) SIGNAL
CD,TUNER,IP-BUS SIGNAL
IP-BUS:+2.2dBs
FM(100%):-19.5dBs
AM(30%):-30dBs
IP-BUS:+2.2dBs
FM(100%):-20.5dBs
AM(30%):-31dBs
IP-BUS
AUTO-EQ
CD MECHANISM
TUNER
RDS DECODER
AUTOMATIC FLAP
IP-BUS
DRIVER
123
4
56
7
8
91011
HICD MECHANISM
MODULE
CK
FSWITCH PCB
G
MIC JACK
PCB
BFM/AM TUNER UNIT
EEPROM
/UC
A-a
F G

CN1901
(/UC)
(/ES)
CN4501
R284 0R0
Bs
IP-BUS:+4.3dBs
FM(100%):-0.4dBs
AM(30%):-10.9dBs
CD:+2.43dBs
CD:+8.18dBs
CD:+34.18dBs
CD:+18.68dBs
PRE OUT
SYSTEM CONTROLLER
GRILLE
BUZZER
8V
REGULATOR
MUTE
VDD 5V
SENSE
TEL MUTE
AMP
RESET
PRE OUT
DSP
E-VOL
ASL
DFS ALARM
/ES
/UC
E
ASL UNIT ATUNER AMP UNIT
KEYBOARD UNIT
DCN3001
HCN702
10A
0.5A
CEK1136
GND
ILL
B REMOTE
ACC
ALARM
BACK UP
CELLULAR MUTE
RL-
FL-
RL+
FL+
RR-
FR-
RR+
FR+
DOOR SW
/UC
CEK1014
DOOR LOCK
ALARM SENSOR
STARTER CUT-OFF
1K(1/2W)
1K(1/2W)
13
DEH-P900R,P9050
5678
5678
D
C
B
A
A-b
A

14
DEH-P900R,P9050
1234
1234
D
C
B
A
CN701 CN4501
CN4602
/UC
TUNER SIGNAL
IP-BUS SIGNAL
CD(DIGITAL) SIGNAL CD,TUNER,IP-BUS SIGNAL
IP-BUS:+2.2dBs
FM(100%):-19.5dBs AM(30%):-30dBs
IP-BUS:+2.2dBs FM(100%):-20.5dBs AM(30%):-31dBs CD:+
IP-BUS
AUTO-EQ
CD MECHANISM
E-VOL
ASL
IP-BUS DRIVER
123
4
56
7
8
91011
HICD MECHANISM
MODULE
E
ASL UNIT
G
MIC JACK
PCB
M TUNER UNIT
A-a
A-a A-b
G
1
2
3

15
DEH-P900R,P9050
5678
5678
D
C
B
A
A-a
A-a A-b
F
CN1901
(/UC)
(/ES)
S951
CSN1012
S952
CSN1022
CLOSE
OPEN
M951
AUTOMATIC
FLAP MOTOR
CXM1085
C433 100P
/ES
SYSTEM CONTR
TUNER
RDS DECODER
AUTOMATIC FLAP
CKEYBOARD UNIT
FSWITCH PCB
BFM/AM TU
EEPROM
/UC

16
1234
1234
D
C
B
A
A-a A-b
A-b
DEH-P900R,P9050
R284
0R0
IP-BUS:+4.3dBs FM(100%):-0.4dBs AM(30%):-10.9dBs
CD:+2.43dBs
CD:+8.18dBs
CD:+18.68dBs
PRE OUT
AMP
RESET
PRE OUT
DSP
/ES
/UC
ATUNER AMP UNIT
DCN3001
HCN702
1
3
2

17
DEH-P900R,P9050
5678
5678
D
C
B
A
A-b
A-a A-b
CN1901
(/UC)
(/ES)
CD:+34.18dBs
M CONTROLLER
GRILLE
BUZZER
8V REGULATOR
MUTE
VDD 5V
SENSE
TEL MUTE
AMP
DFS ALARM
UNIT
10A
0.5A
CEK1136
GND
ILL
B REMOTE
ACC
ALARM
BACK UP
CELLULAR MUTE
RL- FL-
RL+
FL+
RR- FR-
RR+ FR+
DOOR SW
/UC
CEK1014
DOOR LOCK
ALARM SENSOR STARTER CUT-OFF
1K(1/2W)
1K(1/2W)

KV1410(23)
Voltage of IC Terminals
Mark
None
F0
F65
F125
A0
A74
A125
Band
–
FM
FM
FM
AM
AM
AM
Input Level
–
0dBf
65dBf
125dBf
0dBµ
74dBµ
125dBµ
18
DEH-P900R,P9050
1234
1234
D
C
B
A
B
3.3 FM/AM TUNER UNIT
B
A

19
DEH-P900R,P9050
5678
5678
D
C
B
A
B
KV1410(23)

S1901,1902:CSG1112
S1903,1904:CSG1111
S1905-1924:CSG1112
S1925:CSG1111
DISP
VOL+
EQ+
EQ-
VOL-
SOURCEENT
PGM
1
23
5
4
6LOUD
CLOCK
BAND
AUDIO
FUNC EJECT
RESET
A
CN801
20
DEH-P900R,P9050
1234
1234
D
C
B
A
C
3.4 KEYBOARD UNIT