PIONEER DEH-3750MP, DEH- 3770MP, deh-3770 Service Manual
ORDER NO.
CRT3399
DEH-3750MP/XU/GS
HIGH POWER CD/MP3/WMA PLAYER WITH FM/AM TUNER
DEH-3750MP
DEH-3770MP
DEH-3750MP
This service manual should be used together with the following manual(s):
Model No. Order No. Mech.Module Remarks
CX-3158 CRT3394 S10.1AAC CD Mech. Module : Circuit Description, Mech. Description, Disassembly
/XU/CS
/XU/CN
/XU/GS
For details, refer to "Important Check Points for Good Servicing".
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
PIONEER CORPORATION 2004
K-ZZA. DEC. 2004 Printed in Japan
5678
1. SPECIFICATIONS
A
B
C
D
E
56
DEH-3750MP/XU/GS
F
7
8
5
1234
A
B
C
D
E
F
6
1234
DEH-3750MP/XU/GS
N
1234
2. EXPLODED VIEWS AND PARTS LIST
OTES : • Parts marked by " * " are generally unavailable because they are not in our Master Spare Parts List.
• The > mark found on some component parts indicatesthe importance of the safety factor of the part.
A
Therefore, when replacing, be sure to use parts of identical designation.
• 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.)
2.1 PACKING
"
B
18
C
17
D
4
5
8
14
6
7
9
10
11
1
2
12
15
13
16
E
F
8
1234
DEH-3750MP/XU/GS
5678
(1) PACKING SECTION PARTS LIST
Mark No. Description Part No.
1 Accessory Assy CEA4850
2 Screw Assy CEA3849
3 •••••
4 Screw CBA1650
* 5 Polyethylene Bag CEG-127
6 Screw CRZ50P090FTC
7 Screw TRZ50P080FTC
* 8 Polyethylene Bag CEG-158
9 Handle CNC5395
10 Bush CNV3930
11 Polyethylene Bag CEG-162
12 Carton See Contrast table(2)
Mark No. Description Part No.
13 Contain Box See Contrast table(2)
14 Protector XHP7004
15 Protector XHP7003
16-1 Owner's Manual See Contrast table(2)
16-2 Installation Manual See Contrast table(2)
16-3 Caution Card See Contrast table(2)
* 16-4 Warranty Card See Contrast table(2)
17 Cord Assy XDE7008
18 Case Assy YXB5005
* 19 Battery CEX1065
20 Remote Control Unit CXC3173
(2) CONTRAST TABLE
DEH-3750MP/XU/GS, DEH-3770MP/XU/CS and DEH-3750MP/XU/CN are constructed the same except for the following:
Mark No. Description DEH-3750MP/XU/GS DEH-3770MP/XU/CS DEH-3750MP/XU/CN
12 Carton YHG5020 YHG5019 YHG5023
13 Contain Box YHL5020 YHL5019 YHL5023
16-1 Owner's Manual YRD5021 YRD5025 YRB5011
16-2 Installation Manual YRD5024 YRD5026 YRB5013
16-3 Caution Card CRP1310 CRP1310 Not used
A
B
C
* 16-4 Warranty Card Not used Not used ARY7046
Owner's Manual,Installation Manual
Part No. Language
YRD5021 English, Traditional Chinese, Arabic
YRD5024 English, Traditional Chinese, Arabic
YRD5025 English, Spanish, Portuguese(B)
YRD5026 English, Spanish, Portuguese(B)
YRB5011 Casual Chinese
YRB5013 Casual Chinese
D
E
56
DEH-3750MP/XU/GS
F
7
8
9
1234
2.2 EXTERIOR
58
62
57
64
63
56
59
C
65
6
18
9
8
19
70
A
60
A
13
75
74
44
31
10
31
66
65
61
65
B
52
B
42
36
35
43
53
33
C
71
2
2
41
39
38
34
2
49
2
32
17
37
3
23
48
68
76
47
40
68
17
25
50
67
46
51
27
B
22
16
30
31
45
28
20
55
31
69
21
D
12
5
14
E
B
54
F
15
A
4
C
A
4
4
26
29
7
10
1234
DEH-3750MP/XU/GS
5678
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description Part No.
1 •••••
2 Screw BSZ26P060FTC
3 Screw BSZ30P060FTC
4 Screw BSZ30P200FTC
5 Cable YDE5008
6 Case CNB2793
7 Holder CNC8659
8 Earth Plate CNC8915
9 Cushion CNM8890
10 Panel See Contrast table(2)
11 •••••
12
13 Cord Assy XDE7008
14 Insulator XNM7106
15 Insulator YNM5012
16 Tuner Amp Unit See Contrast table(2)
17 Screw ASZ26P060FTC
18 Screw BPZ26P080FTC
19 Screw BSZ26P160FTC
> 20 Fuse(10A) CEK1208
21 Pin Jack(CN352) CKB1057
22 Plug(CN901) CKM1376
23 Connector(CN721) CKS3837
24 •••••
25 Connector(CN831) CKS4944
26 Antenna Jack(CN401) CKX1056
27 Holder CND1328
28 Heat Sink CNR1668
29 Holder CND1054
30 Holder YNC5004
31 Screw BPZ20P100FZK
32 Spring CBH2210
33 Knob(VOLUME) See Contrast table(2)
34 Button(DETACH) YAC5027
35 Button(SOURCE) YAC5030
36 Button(1-6, LOCAL/BSM) YAC5031
37 Button(AUDIO, LOUDNESS) YAC5032
38 Button(BAND) YAC5033
39 Button(EJECT, DISPLAY) YAC5034
CD Mechanism Module(S10.1AACA)
See Contrast table(2)
Mark No. Description Part No.
40 Button(DOWN, RIGHT) See Contrast table(2)
41 Button(UP, LEFT) See Contrast table(2)
42 Button(CLOCK, EQ) YAC5039
43 Spring YBL5001
44 Cover YNS5038
45 Connector(CN1801) CKS4943
46 Sheet CNM7932
47 Connector CNV7369
48 LCD(LCD1801) See Contrast table(2)
49 Holder YNC5005
50 Lighting Conductor YNV5004
51 Lighting Conductor YNV5005
52 Rubber Contact YNV5006
53 Grille Unit See Contrast table(2)
54 Chassis Unit YXA5080
55 Button(DETACH) CAC4836
56 Spring CBH1835
57 Spring CBH2208
58 Spring CBH2367
59 Bracket CNC6791
60 Holder CNC8042
61 Cover CNM6276
62 Arm CNV4692
63 Arm CNV4728
64 Arm CNV5576
65 Screw IMS20P030FZK
66 Panel YNS5046
67 IC(IC921) NJM2388F84
68 Transistor(Q911, 991) 2SD2396
69 IC(IC302) PAL007A
70 FM/AM Tuner Unit(Z401) CWE1646
71 Sheet See Contrast table(2)
72 Remote Control Unit CXC3173
73 Cover CNS7068
74 Cushion YNM5004
75 IC(IC1802) TSOP4840SB1
76 Sheet See Contrast table(2)
A
B
C
D
E
56
DEH-3750MP/XU/GS
F
7
8
11
1234
(2) CONTRAST TABLE
DEH-3750MP/XU/GS, DEH-3770MP/XU/CS and DEH-3750MP/XU/CN are constructed the same except for the following:
Mark No. Description DEH-3750MP/XU/GS DEH-3770MP/XU/CS DEH-3750MP/XU/CN
A
10 Panel YNS5045 YNS5045 CNS8046
12
16 Tuner Amp Unit YWM5037 YWM5073 YWM5039
33 Knob(VOLUME) YAA5002 YAA5002 YAA5001
40 Button(DOWN, RIGHT) YAC5038 YAC5038 YAC5035
41 Button(UP, LEFT) YAC5037 YAC5037 YAC5036
48 LCD(LCD1801) YAW5027 YAW5015 YAW5027
53 Grille Unit YXA5082 YXA5051 YXA5052
71 Sheet Not used Not used CNM9404
76 Sheet YNM5011 Not used YNM5011
B
CD Mechanism Module(S10.1AACA)
CXK5668 CXK5668 CXK5669
C
D
E
F
12
1234
DEH-3750MP/XU/GS
1234
2.3 CD MECHANISM MODULE
42
A
5
13
13
5
81
34
5
15
22
E
F
93
13
A
B
44
5
B
1
54
53
C
52
13
D
86
86
82
83
4
37
71
4
29
51
1
73
50
72
10
1
I
76
55
5
36
4
1
18
2
64
47
C
24
2
1
7
61
2
M
1
23
87
75
B
E
63
57
62
58
1
G
L
1
N
R
1
1
2
1
40
56
D
O
16
P
1
33
1
P
19
J
12
3
20
39
1
69
30
2
21
M
D
79
2
1GEM1024
2GEM1045
3GEM1035
E
92
26
G
68
28
I
H
28
45
J
38
23
K
59
49
F
Q
A
27
H
77
90
48
8
67
17
78
25
70
60
80
N
L
K
43
46
6
60
11
89
10
14
74
R
31
41
85
C
91
F
C
65
1
2
3
85
66
35
O
31
Q
14
85
14
1234
DEH-3750MP/XU/GS
5678
CD MECHANISM MODULE SECTION PARTS LIST
Mark No. Description Part No.
1 CD Core Unit(S10.1) CWX3096
2 Connector(CN101) CKS4182
3 Connector(CN901) CKS4017
4 Screw BMZ20P035FTC
5 Screw BSZ20P040FTC
6 Screw(M2x4) CBA1362
7 Screw(M2x3) CBA1824
8 Screw(M2x3) CBA1825
9 •••••
10 Washer CBF1038
11 Washer CBF1060
12 Spring CBH2390
13 Spring CBH2606
14 Spring CBH2607
15 Spring CBH2608
16 Spring CBH2609
17 Spring CBH2610
18 Spring CBH2735
19 Spring CBH2612
20 Spring CBH2613
21 Spring CBH2614
22 Spring CBH2615
23 Spring CBH2616
24 Spring CBH2617
25 Spring CBH2620
26 Spring CBH2621
27 Spring CBH2641
28 Spring CBH2642
29 Spring CBH2643
30 Spring CBH2659
31 Spring CBH2688
32 •••••
33 Shaft CLA4441
34 Frame CND2443
35 Frame CNC9963
36 Bracket CND2712
37 Bracket CND1895
38 Arm CNC9968
39 Arm CND1909
40 Lever CND2032
41 Lever CNC9984
42 Sheet CNM8134
43 Collar CNV8447
44 Guide CNV8448
45 Arm CNV8403
46 Rack CNV8374
47 Holder CNV8376
48 Holder CNV8377
49 Arm CNV8378
No. Description Part No.
Mark
50 Gear CNV8379
51 Gear CNV8380
52 Gear CNV8381
53 Gear CNV8382
54 Gear CNV8383
55 Gear CNV8384
56 Rack CNV8385
57 Arm CNV8386
58 Arm CNV8387
59 Guide CNV8388
60 Roller CNV8189
61 Gear CNV8389
62 Arm(GS, CS) CNV8391
Arm Unit(CN) CXC3865
63 Arm(GS, CS) CNV8390
Arm Unit(CN) CXC3864
64 Arm CNV8392
65 Damper CNV7313
66 Damper CNV7314
67 Arm CNV8394
68 Arm CNV8395
69 Guide CNV8396
70 Guide CNV8397
71 Holder CNV8398
72 Arm CNV8402
73 Gear CNV8400
74 Damper CNV7618
75 Motor Unit(M1) CXC4440
76 Chassis Unit CXC2318
77 Screw Unit CXB8729
78 Gear Unit CXC2397
79 Arm Unit CXC2316
80 Arm CND1896
81 Arm CND1894
82 Motor Unit(M2) CXB8933
83 Bracket CNC9985
84 •••••
85 Screw(M2x5) EBA1028
86 Screw JFZ20P020FTC
87 Screw JGZ17P022FTC
88 •••••
89 Washer YE20FTC
90 Pickup Unit(P10)(Service) CXX1647
91 Screw IMS26P030FTC
92 Spring CBL1635
93 Clamper CNV8372
A
B
C
D
E
F
56
DEH-3750MP/XU/GS
7
8
15
E
C
P
1234
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
A
ANTENNA
B
C
TUNER AMP UNIT
A
FM/AM TUNER UNIT
CN401
1
2
1
3
AM ANT
FM ANT
ATT
ATT
ANT adj
FMRF
FMRF
RF adj
VDD
76 13 5 1098 11 14 18192021
WC
CE2
ROM_VDD
IC 3 EEPROM
5.0V
OSC
LPF
IC 1
3.3V
MIXER, IF AMP
T51
CF52
RFGND
OSCGND
DGND
212 1522 16 4
AUDIOGNDNCVCC
CF51
VDD_3.3
17
3.3V
SL
5V 3.3V
3.3V 2.5V
TUN 3.3V
SYS 8V
DI
CK
NC
CE1
IC 5
←
IC 4
←
2.5V
DO
NCNCNC
NC
IC 2
2.5V
DET, FM MPX
Rch
24
Lch
23
TUN L
2
CDL
3
CD CORE UNIT(S10.1)
C
PICKUP UNIT
(P10)(SERVICE)
LASER
DIODE
D
HOLOGRAM
FOCUS ACT.
TRACKING ACT.
MONITOR
DIODE
M1
SPINDLE
MOTOR
M2
LOADING/CARRIAGE
MOTOR
UNIT
M
M
CN101
LD-
15
15
MD
5
5
AC,BD
FOP
FOP
1
1
TOP
TOP
4
4
LD+
14
14
E
V3R3D
Q101
E,F
S904
12EJ
3
V3R3D
142
LD
143
PD
RF AMP, CD DECODER,
MP3 AND WMA DECODER,
DIGITAL SERVO/DATA PROCESSOR
FD,TD
12
FOP
13
TOP
CD
DRIVER
16
SOP
15
SOM
18
LCOP
17
LCOM
IC 301
BA5835FP
S905
S903
8EJ
DSCSNS
IC 203
NJM2885DL1-33
SD,MD
CONT
LOEJ
S901
HOME
IC 201
UPD63763GJ
53
22
9
47
32
31
30
97
1
3.3V REGULATOR
X701
1312
X1
MICRO
COMPUTER
LOEJ
CONT
IC 701
PE5454A
12EJ
8EJ
DSCSNS
HOME
3VDD
VD2
31
LOUT
X2
14
reset
49
VDCONT
46
CD3VON
3V REGULATOR
3
IC 703
S-812C33AUA-C2N
CN901
LOUT
RESET
BRST,BRXEN,BSRQ
BDATA,BSCK
VD
VDCONT
2
VDD
CD3VON
CN721
CD L
14
10
SYSTEM
I
RESET RST
15
9
VD
VDD
VD2
VD1
3
21
4
20
VDCONT
19
5
5
19
VD2
22
2
CD3VCONT
1
23
A
XSI,XSCK,CLAMSW,VDCONT,XAO
VDD
Q993
Q994
Q991
Q992
43
5
B.UP
F
16
1234
DEH-3750MP/XU/GS
5678
A
REAR OUTPUT
Q352
R Lch
CN352
2
RST
A
RESET
IC 961
S-80834CNY
VDD
TUN L
CDL
TUNPDO
11
TUNPDI
12
TUNPCK
13
CE1
56
CE2
55
ELECTRONIC VOLUME/
SOURCE SELECTOR
2
IN1-L
IC 151
PML003AM
3
IN2-L
VCK, VDT, VST
MUTE
SYSPW
60
RESET
TUNPDI
TUNPDO
TUNPCK
TUNPCE1
TUNPCE2
SYSTEM CONTROLLER
IC 601(1/2)
PE5460A
10
F Lch
11
R Lch
48
43
DALMON
BSENS
ASENS
MUTE
Q453
3
VDD REGULATOR
VDD
32
64
63
BSENS
ASENS
Q911
BACKUP SENSE
Q931
Q912
ACC
B.UP
CN901
B
FUSE
1
1
10A
3
3
BACK UP
ACC
ACC SENSE
GND
FLFL+
RL-
RL+
B. REM
C
MUTE
Q452
SYS8V
TU 3.3V
POWER AMP
14
12
22
TUN 3V REG.
IC 981
BA33BC0FP
FLIN
RLIN
MUTE
IC 302
PAL007A
STBY
4
20 6
VCC
VCC
B. REM
SYS 8V REG.
NJM2388F84
FLFL+
RLRL+
IC 921
SYSPW
B.UP
2
2
23
21
3
5
25
B. REM
B.UP
SYSPW
10
10
12
12
9
9
11
11
6
6
D
B.UP
SYSTEM CONTROLLER
IC 601(2/2)
PE5460A
SWVDD
SOURCE
DSENS
ILMPW
70
X1
X601
12.58291MHz
69
X2
CN1801CN831
SWVDD
3
3
SWVDD
SRC
4
4
DSENS
10
ILM
5
ROT1
6
ROT0
7
DPDT
8
KYDT
9
SOURCE
10
5
3
IL1801
6
7
8
9
LAMP
S1827
VOLUME
SWVDD
ROT1
ROT0
DPDT
KYDT
VDD
21
SWVDD
66
SOURCE
65
DSENS
B.UP
Q822
22
36
35
9
8
Q801
Q821
DEH-3750MP/XU/GS
56
REM.CON.
IC1802
TSOP4840SB1
17
19
10
57
7
DPDT
KYDT
VLCD
VDD
1
REM
17
KEY MATRIX
KEY DATA
LCD DRIVER/
KEY CONTROLLER
IC 1801
PD6340A
KEYBOARD UNIT
B
22
XO
X1801
5MHz
23
XI
LCD1801
8
E
F
17
1234
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
Large size
A-b
SCH diagram
Guide page
A-a A-b
A-a
A-a
C
CN901
2322212019181716151413121110987654321
A-b
Detailed page
471/16
A-a
B
C
GS,CN
D
STRKEY1
ADPW
BDATA
swvdd
FM/AM TUNER UNIT
VSS
AVDD
AVREF1
DISCSENS
SYSTEM CONTROLLER
brst
brxen
source
dsens
bsens
asens
STRKEY2
isens
bsrq
RECEIVE
E
ANTENNA
NOTE :
Symbol indicates a resistor.
No differentiation is made between chip resistors and
discrete resistors.
Symbol indicates a capacitor.
No differentiation is made between chip capacitors and
discrete capacitors.
For resistors and capacitors in the circuit diagrams, their resistance values or
capacitance values are expressed in codes:
Ex. *Resistors
Code Practical value
123 12k ohms
103 10k ohms
*Capacitors
F
A
18
1234
Code Practical value
103 0.01uF
101/10 100uF/10V
The > mark found on some component parts indicates
the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of
identical designation.
DEH-3750MP/XU/GS
B
CN1801
5678
A-b
332/16
TUNER AMP UNIT
A
FM: 29.6dB
AM: 19.1dB
CD: 36.45dB
>
CEK1286
3A
REAR
L CH
REAR
R CH
A
B
C
source
TROLLER
dsens
bsens
asens
STRKEY2
isens
bsrq
RECEIVE
CEK1208
>
10A
D
E
56
DEH-3750MP/XU/GS
F
A
7
8
19
A
A-b
1234
asens
bsens
dsens
source
B
2322212019181716151413121110987654321
VSS
AVDD
AVREF1
DISCSENS
STRKEY1
GS,CN
C
CN901
C
A-b
A-a
A-a
D
471/16
E
F
A-a
20
1234
DEH-3750MP/XU/GS
asens
bsens
dsens
source
5678
A
2
A-b
isens
STRKEY2
bsrq
RECEIVE
1
VSS
AVDD
AVREF1
STRKEY1
GS,CN
DISCSENS
brxen
brst
SYSTEM CONTROLLER
swvdd
ADPW
BDATA
B
CN1801
A-b
A-a
A-a
B
C
D
ANTENNA
FM/AM TUNER UNIT
DEH-3750MP/XU/GS
56
Symbol indicates a resistor.
No differentiation is made between chip resistors and
discrete resistors.
NOTE :
7
E
Symbol indicates a capacitor.
No differentiation is made between chip capacitors and
discrete capacitors.
For resistors and capacitors in the circuit diagrams, their resistance values or
capacitance values are expressed in codes:
Ex. *Resistors
Code Practical value
123 12k ohms
103 10k ohms
*Capacitors
Code Practical value
The > mark found on some component parts indicates
103 0.01uF
101/10 100uF/10V
F
the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of
identical designation.
A-a
8
21
1234
A
REAR
L CH
REAR
R CH
B
3A
CEK1286
>
TUNER AMP UNIT
A
FM: 29.6dB
CD: 36.45dB
C
A-b
A-a
D
E
AM: 19.1dB
332/16
F
A-b
22
1234
DEH-3750MP/XU/GS
5678
A
10A
>
CEK1208
B
A-b
A-a
C
D
E
1
DEH-3750MP/XU/GS
56
F
2
7
8
A-b
23
1234
3.3 KEYBOARD UNIT
A
B
C
D
E
LCD DRIVER/
KEY CONTROLLER
DIS
GS,CN : YAW5027
F
CS : YAW5015
B
24
1234
DEH-3750MP/XU/GS
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