Download Pioneer DEH-3770MP Service manual

ORDER NO.
CRT3399
DEH-3750MP/XU/GS
HIGH POWER CD/MP3/WMA PLAYER WITH FM/AM TUNER
DEH-3750MP
/XU/GS
DEH-3770MP/XU/CS
DEH-3750MP/XU/CN
This service manual should be used together with the following manual(s):
Model No.
CX-3158
Order No.
CRT3394
Mech.Module
S10.1AAC
Remarks
CD Mech. Module : Circuit Description, Mech. Description, Disassembly
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
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SAFETY INFORMATION
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.
A
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replaced only with the same or equivalent type recommended by the manufacture.
Discord used batteries according to the manufacture's instructions.
B
- Service Precaution
1. 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. Before disassembling the unit, be sure to turn off the power. Unplugging and plugging the connectors
during power-on mode may damage the ICs inside the unit.
3. To protect the pickup unit from electrostatic discharge during servicing, take an appropriate treatment
(shorting-solder) by referring to "the DISASSEMBLY".
4. After replacing the pickup unit, be sure to check the grating.
C
D
E
F
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DEH-3750MP/XU/GS
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[Important Check Points for Good Servicing]
In this manual, procedures that must be performed during repairs are marked with the below symbol.
Please be sure to confirm and follow these procedures.
A
1. Product safety
Please conform to product regulations (such as safety and radiation regulations), and maintain a safe servicing environment by
following the safety instructions described in this manual.
1 Use specified parts for repair.
Use genuine parts. Be sure to use important parts for safety.
2 Do not perform modifications without proper instructions.
Please follow the specified safety methods when modification(addition/change of parts) is required due to interferences such as
radio/TV interference and foreign noise.
3 Make sure the soldering of repaired locations is properly performed.
B
When you solder while repairing, please be sure that there are no cold solder and other debris.
Soldering should be finished with the proper quantity. (Refer to the example)
4 Make sure the screws are tightly fastened.
Please be sure that all screws are fastened, and that there are no loose screws.
5 Make sure each connectors are correctly inserted.
Please be sure that all connectors are inserted, and that there are no imperfect insertion.
6 Make sure the wiring cables are set to their original state.
Please replace the wiring and cables to the original state after repairs.
In addition, be sure that there are no pinched wires, etc.
C
7 Make sure screws and soldering scraps do not remain inside the product.
Please check that neither solder debris nor screws remain inside the product.
8 There should be no semi-broken wires, scratches, melting, etc. on the coating of the power cord.
Damaged power cords may lead to fire accidents, so please be sure that there are no damages.
If you find a damaged power cord, please exchange it with a suitable one.
9 There should be no spark traces or similar marks on the power plug.
When spark traces or similar marks are found on the power supply plug, please check the connection and advise on secure
connections and suitable usage. Please exchange the power cord if necessary.
0 Safe environment should be secured during servicing.
D
When you perform repairs, please pay attention to static electricity, furniture, household articles, etc. in order to prevent injuries.
Please pay attention to your surroundings and repair safely.
2. Adjustments
To keep the original performance of the products, optimum adjustments and confirmation of characteristics within specification.
Adjustments should be performed in accordance with the procedures/instructions described in this manual.
3. Lubricants, Glues, and Replacement parts
Use grease and adhesives that are equal to the specified substance.
Make sure the proper amount is applied.
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4. Cleaning
For parts that require cleaning, such as optical pickups, tape deck heads, lenses and mirrors used in projection monitors, proper
cleaning should be performed to restore their performances.
5. Shipping mode and Shipping screws
To protect products from damages or failures during transit, the shipping mode should be set or the shipping screws should be
installed before shipment. Please be sure to follow this method especially if it is specified in this manual.
F
DEH-3750MP/XU/GS
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CONTENTS
SAFETY INFORMATION ..................................................................................................................................... 2
1. SPECIFICATIONS ............................................................................................................................................ 5
2. EXPLODED VIEWS AND PARTS LIST ............................................................................................................ 8
2.1 PACKING ................................................................................................................................................... 8
2.2 EXTERIOR............................................................................................................................................... 10
2.3 CD MECHANISM MODULE..................................................................................................................... 14
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM .......................................................................................... 16
3.1 BLOCK DIAGRAM ................................................................................................................................... 16
3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE).............................................................................. 18
3.3 KEYBOARD UNIT.................................................................................................................................... 24
3.4 CD MECHANISM MODULE(GUIDE PAGE) ............................................................................................ 26
4. PCB CONNECTION DIAGRAM ..................................................................................................................... 36
4.1 TUNER AMP UNIT................................................................................................................................... 36
4.2 KEYBOARD UNIT.................................................................................................................................... 40
4.3 CD CORE UNIT(S10.1) ........................................................................................................................... 42
5. ELECTRICAL PARTS LIST ............................................................................................................................ 44
6. ADJUSTMENT ............................................................................................................................................... 48
6.1 CD ADJUSTMENT................................................................................................................................... 48
6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT .................................................... 50
6.3 ERROR MODE ........................................................................................................................................ 52
6.4 SYSTEM MICROCOMPUTER TEST PROGRAM ................................................................................... 53
7. GENERAL INFORMATION ............................................................................................................................. 54
7.1 DIAGNOSIS ............................................................................................................................................. 54
7.1.1 DISASSEMBLY ..................................................................................................................................... 54
7.1.2 CONNECTOR FUNCTION DESCRIPTION .......................................................................................... 57
7.2 PARTS...................................................................................................................................................... 58
7.2.1 IC .......................................................................................................................................................... 58
7.2.2 DISPLAY ............................................................................................................................................... 66
7.3 OPERATIONAL FLOW CHART ............................................................................................................... 67
7.4 CLEANING............................................................................................................................................... 68
8. OPERATIONS ................................................................................................................................................ 69
A
B
C
D
E
F
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DEH-3750MP/XU/GS
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3
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5
6
7
8
1. SPECIFICATIONS
A
B
C
D
E
F
DEH-3750MP/XU/GS
5
6
7
8
5
1
2
1
2
3
4
3
4
A
B
C
D
E
F
6
DEH-3750MP/XU/GS
5
6
7
8
A
B
C
D
E
F
DEH-3750MP/XU/GS
5
6
7
8
7
1
2
3
4
2. EXPLODED VIEWS AND PARTS LIST
NOTES : • 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.
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.)
A
"
2.1 PACKING
B
4
5
1
6
7
16
2
9
10
8
18
12
C
14
11
17
15
D
13
E
F
8
DEH-3750MP/XU/GS
1
2
3
4
5
6
7
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(1) PACKING SECTION PARTS LIST
Mark No.
Part No.
Mark No.
CEA4850
CEA3849
13
14
15
1
2
3
4
5
Accessory Assy
Screw Assy
•••••
Screw
Polyethylene Bag
CBA1650
CEG-127
6
7
8
9
10
Screw
Screw
Polyethylene Bag
Handle
Bush
CRZ50P090FTC
TRZ50P080FTC
CEG-158
CNC5395
CNV3930
*
*
Description
*
16-1
16-2
16-3
16-4
17
*
11
12
Polyethylene Bag
Carton
CEG-162
See Contrast table(2)
18
19
20
Description
Part No.
Contain Box
Protector
Protector
See Contrast table(2)
XHP7004
XHP7003
Owner's Manual
Installation Manual
Caution Card
Warranty Card
Cord Assy
See Contrast table(2)
See Contrast table(2)
See Contrast table(2)
See Contrast table(2)
XDE7008
Case Assy
Battery
Remote Control Unit
YXB5005
CEX1065
CXC3173
A
B
(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
12
13
16-1
16-2
16-3
Carton
Contain Box
Owner's Manual
Installation Manual
Caution Card
YHG5020
YHL5020
YRD5021
YRD5024
CRP1310
DEH-3750MP/XU/GS
YHG5019
YHL5019
YRD5025
YRD5026
CRP1310
DEH-3770MP/XU/CS
YHG5023
YHL5023
YRB5011
YRB5013
Not used
DEH-3750MP/XU/CN
16-4
Warranty Card
Not used
Not used
ARY7046
C
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
F
DEH-3750MP/XU/GS
5
6
7
8
9
1
2
3
4
2.2 EXTERIOR
62
57
60
61
A
64
66
13
63
10
65
75 74
31
44
56
31
65
C
B
52
31
55
B
58
59
65
31
45
42
43
50
76
48 47
41
39
51
49
37
40
53
33
6
46
36
35
38
32
C
71
9
16
34
A
8
2
30
3
17 67 27
2
28
68
69
17
68
23
2
19
B
22
25
20 21
18
2
D
12
A
70
26
29
5
14
15
E
7
A
B
4
4
54
4
C
F
10
DEH-3750MP/XU/GS
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2
3
4
5
6
7
8
(1) EXTERIOR SECTION PARTS LIST
Mark No.
>
Description
Mark No.
Part No.
1
2
3
4
5
•••••
Screw
Screw
Screw
Cable
BSZ26P060FTC
BSZ30P060FTC
BSZ30P200FTC
YDE5008
6
7
8
9
10
Case
Holder
Earth Plate
Cushion
Panel
CNB2793
CNC8659
CNC8915
CNM8890
See Contrast table(2)
11
12
13
14
15
•••••
Cord Assy
Insulator
Insulator
XDE7008
XNM7106
YNM5012
16
17
18
19
20
Tuner Amp Unit
Screw
Screw
Screw
Fuse(10A)
See Contrast table(2)
ASZ26P060FTC
BPZ26P080FTC
BSZ26P160FTC
CEK1208
21
22
23
24
25
Pin Jack(CN352)
Plug(CN901)
Connector(CN721)
•••••
Connector(CN831)
CKB1057
CKM1376
CKS3837
26
27
28
29
30
Antenna Jack(CN401)
Holder
Heat Sink
Holder
Holder
CKX1056
CND1328
CNR1668
CND1054
YNC5004
31
32
33
34
35
Screw
Spring
Knob(VOLUME)
Button(DETACH)
Button(SOURCE)
BPZ20P100FZK
CBH2210
See Contrast table(2)
YAC5027
YAC5030
36
37
38
39
Button(1-6, LOCAL/BSM)
Button(AUDIO, LOUDNESS)
Button(BAND)
Button(EJECT, DISPLAY)
YAC5031
YAC5032
YAC5033
YAC5034
Description
Part No.
40
Button(DOWN, RIGHT)
See Contrast table(2)
41
42
43
44
45
Button(UP, LEFT)
Button(CLOCK, EQ)
Spring
Cover
Connector(CN1801)
See Contrast table(2)
YAC5039
YBL5001
YNS5038
CKS4943
46
47
48
49
50
Sheet
Connector
LCD(LCD1801)
Holder
Lighting Conductor
CNM7932
CNV7369
See Contrast table(2)
YNC5005
YNV5004
51
52
53
54
55
Lighting Conductor
Rubber Contact
Grille Unit
Chassis Unit
Button(DETACH)
YNV5005
YNV5006
See Contrast table(2)
YXA5080
CAC4836
56
57
58
59
60
Spring
Spring
Spring
Bracket
Holder
CBH1835
CBH2208
CBH2367
CNC6791
CNC8042
61
62
63
64
65
Cover
Arm
Arm
Arm
Screw
CNM6276
CNV4692
CNV4728
CNV5576
IMS20P030FZK
66
67
68
69
70
Panel
IC(IC921)
Transistor(Q911, 991)
IC(IC302)
FM/AM Tuner Unit(Z401)
YNS5046
NJM2388F84
2SD2396
PAL007A
CWE1646
71
72
73
74
75
Sheet
Remote Control Unit
Cover
Cushion
IC(IC1802)
See Contrast table(2)
CXC3173
CNS7068
YNM5004
TSOP4840SB1
76
Sheet
See Contrast table(2)
A
B
CD Mechanism Module(S10.1AACA) See Contrast table(2)
CKS4944
C
D
E
F
DEH-3750MP/XU/GS
5
6
7
8
11
1
2
3
4
(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
A
B
No.
10
12
16
33
40
41
48
53
71
76
Description
Panel
DEH-3750MP/XU/GS
YNS5045
DEH-3770MP/XU/CS
DEH-3750MP/XU/CN
Tuner Amp Unit
YWM5037
Knob(VOLUME)
YAA5002
Button(DOWN, RIGHT) YAC5038
YNS5045
CXK5668
YWM5073
YAA5002
YAC5038
CNS8046
CXK5669
YWM5039
YAA5001
YAC5035
Button(UP, LEFT)
LCD(LCD1801)
Grille Unit
Sheet
Sheet
YAC5037
YAW5015
YXA5051
Not used
Not used
YAC5036
YAW5027
YXA5052
CNM9404
YNM5011
CD Mechanism Module(S10.1AACA) CXK5668
YAC5037
YAW5027
YXA5082
Not used
YNM5011
C
D
E
F
12
DEH-3750MP/XU/GS
1
2
3
4
5
6
7
8
A
B
C
D
E
F
DEH-3750MP/XU/GS
5
6
7
8
13
1
2
3
4
2.3 CD MECHANISM MODULE
5
42
13
A
81
34
5
15
13
22
E
5
F
93
13
92
A
B
44
5
54
1
13
C
G
83
86
68
D
52
B
26
82
86
53
28
I
H
4
28
37
71
4
23
1
55
4
1
2
J
87
36
5
45
50
73
23
72
18 29
51
64
38
K
10
47
75
1
C
I
2
24
76
B
49
1
7
61
E
M
2
A
Q
27
8
H
21
G
L
M
1
57
D
90
48
1
79
77
F
1
63
2
59
N
D
O
R
16
17
12
1
58
67
J
3
1
78
33
P
2
62
46
60
20
2
80
40
1
6
1
N
1GEM1024
2GEM1045
3GEM1035
1
11
1
25
69
P
43
L
30
19
56
60
39
K
70
14
E
74
41
R
85
31
C
91
14
C
65
1
3
F
Q
35
O
85
31
2
66
85
14
DEH-3750MP/XU/GS
1
2
3
4
89
10
5
6
7
8
CD MECHANISM MODULE SECTION PARTS LIST
Mark No.
Description
Mark No.
Part No.
1
2
3
4
5
CD Core Unit(S10.1)
Connector(CN101)
Connector(CN901)
Screw
Screw
CWX3096
CKS4182
CKS4017
BMZ20P035FTC
BSZ20P040FTC
6
7
8
9
10
Screw(M2x4)
Screw(M2x3)
Screw(M2x3)
•••••
Washer
CBA1362
CBA1824
CBA1825
11
12
13
14
15
Washer
Spring
Spring
Spring
Spring
CBF1060
CBH2390
CBH2606
CBH2607
CBH2608
16
17
18
19
20
Spring
Spring
Spring
Spring
Spring
CBH2609
CBH2610
CBH2735
CBH2612
CBH2613
21
22
23
24
25
Spring
Spring
Spring
Spring
Spring
CBH2614
CBH2615
CBH2616
CBH2617
CBH2620
26
27
28
29
30
Spring
Spring
Spring
Spring
Spring
CBH2621
CBH2641
CBH2642
CBH2643
CBH2659
31
32
33
34
35
Spring
•••••
Shaft
Frame
Frame
CBH2688
36
37
38
39
40
Bracket
Bracket
Arm
Arm
Lever
CND2712
CND1895
CNC9968
CND1909
CND2032
41
42
43
44
45
Lever
Sheet
Collar
Guide
Arm
CNC9984
CNM8134
CNV8447
CNV8448
CNV8403
46
47
48
49
Rack
Holder
Holder
Arm
CNV8374
CNV8376
CNV8377
CNV8378
CBF1038
Part No.
50
Gear
CNV8379
51
52
53
54
55
Gear
Gear
Gear
Gear
Gear
CNV8380
CNV8381
CNV8382
CNV8383
CNV8384
56
57
58
59
60
Rack
Arm
Arm
Guide
Roller
CNV8385
CNV8386
CNV8387
CNV8388
CNV8189
61
62
64
65
Gear
Arm(GS, CS)
Arm Unit(CN)
Arm(GS, CS)
Arm Unit(CN)
Arm
Damper
CNV8389
CNV8391
CXC3865
CNV8390
CXC3864
CNV8392
CNV7313
66
67
68
69
70
Damper
Arm
Arm
Guide
Guide
CNV7314
CNV8394
CNV8395
CNV8396
CNV8397
71
72
73
74
75
Holder
Arm
Gear
Damper
Motor Unit(M1)
CNV8398
CNV8402
CNV8400
CNV7618
CXC4440
76
77
78
79
80
Chassis Unit
Screw Unit
Gear Unit
Arm Unit
Arm
CXC2318
CXB8729
CXC2397
CXC2316
CND1896
81
82
83
84
85
Arm
Motor Unit(M2)
Bracket
•••••
Screw(M2x5)
CND1894
CXB8933
CNC9985
86
87
88
89
90
Screw
Screw
•••••
Washer
Pickup Unit(P10)(Service)
YE20FTC
CXX1647
91
92
93
Screw
Spring
Clamper
IMS26P030FTC
CBL1635
CNV8372
63
CLA4441
CND2443
CNC9963
Description
6
B
C
D
EBA1028
E
JFZ20P020FTC
JGZ17P022FTC
F
DEH-3750MP/XU/GS
5
A
7
8
15
1
2
3
4
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
A
A TUNER AMP UNIT
VDD
IC 3 EEPROM
5.0V
5V
OSC
ANTENNA
B
NC
NC
NC
18 19 20 21
NC
14
DO
11
NC
CK
SL
DI
10 9 8
CE1
5
ROM_VDD
WC
CE2
13
IC 5
3.3V
←
7 6
FM/AM TUNER UNIT
LPF
CN401
AM ANT
1
1
FMRF
ATT
Rch
2
3
IC 1
3.3V
FM ANT
ATT
FMRF
24
IC 2
2.5V
Lch
MIXER, IF AMP
23
DET, FM MPX
RF adj
ANT adj
T51
CF52
CF51
DGND
AUDIOGND
NC
15
22
16
VDD_3.3
OSCGND
12
VCC
RFGND
2
←
C
E
IC 4
3.3V 2.5V 2.5V
3.3V
17
4
TUN L
2
CDL
3
TUN 3.3V
SYS 8V
C CD CORE UNIT(S10.1)
PICKUP UNIT
(P10)(SERVICE)
V3R3D
CN101
LASER
DIODE
LDMD
D
15
15
5
5
142
Q101
143
FOCUS ACT.
MONITOR TRACKING ACT.
DIODE
E,F
FOP
1
TOP
4
LD+
14
1
4
M2
LOADING/CARRIAGE
MOTOR
LOUT
31
14
10
CD L
FOP
TOP
FD,TD
14
SYSTEM
SD,MD
X701
IC
P
12
FOP
13
TOP
M1
SPINDLE
MOTOR
CN721
CN901
RF AMP, CD DECODER,
LOUT
MP3 AND WMA DECODER,
DIGITAL SERVO/DATA PROCESSOR
AC,BD
HOLOGRAM
UNIT
IC 201
UPD63763GJ
LD
PD
12
X1
CD
DRIVER
M
16
SOP
15
SOM
18
LCOP
17
LCOM
M
LOEJ
CONT
13
22 53
9
47
X2
MICRO
COMPUTER
reset
LOEJ
RESET
14
IC 701
PE5454A
E
30
97
BRST,BRXEN,BSRQ
VD
12EJ
8EJ
DSCSNS
VDCONT
CD3VON
S905
S901
S903
8EJ DSCSNS HOME
3
IC 203
NJM2885DL1-33
3.3V REGULATOR
A
XSI,XSCK,CLAMSW,VDCONT,XAO
3
21
4
20
Q991
VD1
B.UP
4
Q992
3
49
46
5
19
5
5
19
2
22
1
23
VDCONT
3V REGULATOR
3VDD
V3R3D
RST
HOME
VDCONT
S904
12EJ
RESET
BDATA,BSCK
VD
31
9
CONT
IC 301
BA5835FP
32
15
1
VD2
3
IC 703
VDD
2
VDD
S-812C33AUA-C2N
VDD
Q993
VD2
VD2
Q994
CD3VON
CD3VCONT
F
16
DEH-3750MP/XU/GS
1
2
3
4
5
6
7
8
A
REAR OUTPUT
CN352
RESET
IC 961
S-80834CNY
RST
A
R Lch
VDD
2
Q352
60
RESET
3
TUNPDO
11
TUNPDI
12
TUNPCK
13 TUNPCK
56
TUNPCE1
55 TUNPCE2
CE1
CE2
TUNPDI
TUNPDO
VDD REGULATOR
Q911
VDD
B
Q912
SYSTEM CONTROLLER
IC 601(1/2)
PE5460A
DALMON
32
BACKUP SENSE
BSENS
ASENS
64
BSENS
63
ASENS
CN901
B.UP
FUSE
1
BACK UP
3
3
ACC
2
2
GND
10
10
FL-
12
12
FL+
9
9
11
11
RLRL+
6
6
B. REM
1
10A
Q931
ACC
ACC SENSE
B.UP
POWER AMP
TUN L
CDL
20 6
ELECTRONIC VOLUME/
SOURCE SELECTOR
2
3
IN1-L
F Lch
IC 151
PML003AM
R Lch
IN2-L
VCC VCC
10
14
11
12
FLIN
FL-
IC 302
PAL007A
FL+
RLIN
RLRL+
VCK, VDT, VST
22
MUTE
STBY
4
B. REM
23
21
3
5
B. REM
25
C
SYS8V
MUTE
Q453
TUN 3V REG.
SYS 8V REG.
IC 981
BA33BC0FP
IC 921
NJM2388F84
TU 3.3V
B.UP
MUTE
SYSPW
SYSPW
Q452
MUTE
48
43
SYSPW
D
SYSTEM CONTROLLER
IC 601(2/2)
PE5460A
X1
X2
70
69
X601
12.58291MHz
B
CN831
B.UP
KEYBOARD UNIT
CN1801
Q801
3
VDD
SWVDD
SOURCE
21
SWVDD
66
SOURCE
65
DSENS
SWVDD
3
SWVDD
E
4
SRC
4
SOURCE
DSENS
10
DSENS
10
Q821
B.UP
5
ILM
5
REM.CON.
Q822
ILMPW
ROT1
ROT0
3
22
36
35
IL1801
LAMP
6
7
ROT1
ROT0
IC1802
TSOP4840SB1
1
KEY MATRIX
SWVDD
S1827
6
7
17
REM
KEY DATA
VOLUME
DPDT
KYDT
9
8
8
9
DPDT
KYDT
17
8
19
9
10
57
DPDT
KYDT
VLCD
VDD
LCD DRIVER/
KEY CONTROLLER
IC 1801
PD6340A
XO
XI
22
23
X1801
5MHz
F
LCD1801
DEH-3750MP/XU/GS
5
6
7
8
17
1
2
3
4
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".
C CN901
A
A-a
A-a
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Guide page
Detailed page
A-b
471/16
A-a
A-b
A-b
A-a
Large size
SCH diagram
B
bsens
asens
dsens
source
VSS
AVDD
AVREF1
GS,CN
STRKEY1
DISCSENS
C
ADPW
D
FM/AM TUNER UNIT
SYSTEM CONTROLLER
isens
STRKEY2
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:
B
CN1801
Ex. *Resistors
Code
Practical value
123
12k ohms
103
10k ohms
*Capacitors
Code
Practical value
103
0.01uF
101/10
100uF/10V
F
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.
A
18
DEH-3750MP/XU/GS
1
2
3
4
RECEIVE
brxen
brst
swvdd
BDATA
bsrq
5
6
7
A-b
8
A
A
TUNER AMP UNIT
CEK1286
3A
>
REAR
L CH
REAR
R CH
332/16
B
FM: 29.6dB
AM: 19.1dB
CD: 36.45dB
bsens
asens
dsens
source
C
CEK1208
TROLLER
D
>
10A
isens
RECEIVE
STRKEY2
bsrq
E
F
A
DEH-3750MP/XU/GS
5
6
7
8
19
C
CN901
C
D
20
GS,CN
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
A-a A-b
A
A-b
B
E
F
A-a
asens
dsens
bsens
source
AVDD
VSS
AVREF1
STRKEY1
DISCSENS
471/16
1
2
1
2
DEH-3750MP/XU/GS
3
4
3
4
6
7
FM/AM TUNER UNIT
A-a A-b
bsrq
1
2
DEH-3750MP/XU/GS
8
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.
CN1801
B
isens
STRKEY2
7
*Capacitors
Code
Practical value
103
0.01uF
101/10
100uF/10V
Ex. *Resistors
Code
Practical value
123
12k ohms
103
10k ohms
For resistors and capacitors in the circuit diagrams, their resistance values or
capacitance values are expressed in codes:
Symbol indicates a capacitor.
No differentiation is made between chip capacitors and
discrete capacitors.
BDATA
dsens
bsens
source
VSS
AVREF1
SYSTEM CONTROLLER
brst
STRKEY1
DISCSENS
swvdd
AVDD
brxen
ADPW
RECEIVE
5
6
NOTE :
Symbol indicates a resistor.
No differentiation is made between chip resistors and
discrete resistors.
ANTENNA
GS,CN
5
8
A
A-b
B
C
D
A-a
21
E
F
asens
A-a A-b
1
CEK1286
3A
22
>
TUNER AMP UNIT
B
FM: 29.6dB
AM: 19.1dB
CD: 36.45dB
A
REAR
L CH
REAR
R CH
1
2
2
3
3
4
A
C
D
E
F
A-b
DEH-3750MP/XU/GS
4
332/16
5
6
7
8
10A
>
CEK1208
A
B
A-a A-b
C
D
E
F
A-b
2
1
DEH-3750MP/XU/GS
5
6
7
8
23
1
2
3
4
3.3 KEYBOARD UNIT
A
B
C
LCD DRIVER/
KEY CONTROLLER
D
DIS
E
GS,CN : YAW5027
CS : YAW5015
F
B
24
DEH-3750MP/XU/GS
1
2
3
4
5
6
7
8
A
B
KEYBOARD UNIT
B
C
A
CN831
40mA,14V
D
DISPLAY
E
F
D1803,D1804
GS,CN : CL-490SWFSD(12)
CS : CL-490S-WF-SD
B
DEH-3750MP/XU/GS
5
6
7
8
25
1
2
3
4
3.4 CD MECHANISM MODULE(GUIDE PAGE)
A
F
T
C
S
C-a
PICKUP UNIT(P10)(SERVICE)
%
B
F
F
F
T
T
T
F
T
#
T
F
@
F
T
C
D
3
$
2
S
T
1
7
9
C
F
E
8
0
M1 CXC4440
SPINDLE MOTOR
4
5
TY
S
S
F
F
C
T
S
C
CD DRIVER
C
M2 CXB8933
LOADING
/CARRIAGE
MOTOR
S
T
C
F
C
26
DEH-3750MP/XU/GS
1
2
3
4
5
6
7
8
A
C-b
Decimal points for resistor
and capacitor fixed values
are expressed as :
2.2 ← 2R2
0.022 ← R022
SWITCHES:
CD CORE UNIT(S10.1)
S901:HOME SWITCH..........ON-OFF
S903:DSCSNS SWITCH......ON-OFF
S904:12EJ SWITCH.............ON-OFF
S905:8EJ SWITCH...............ON-OFF
ras
B
The underlined indicates the switch position.
SIGNAL LINE
F
T
C
S
!
FOCUS SERVO LINE
TRACKING SERVO LINE
CARRIAGE SERVO LINE
SPINDLE SERVO LINE
C
CD CORE UNIT(S10.1)
3.3V REGULATOR
C
D
SRAMLEVEL2
MICRO COMPUTER
A
3V REGULATOR
SRAMLEVEL1
CN721
SRAMLEVEL0
E
6
TYPE_A/D
^
&
F
C
DEH-3750MP/XU/GS
5
6
7
8
27
F
PICKUP UNIT(P10)
(SERVICE)
E
28
1
2
3
T
#
@
C
F
F
2
T
T
T
T
T
B
F
F
%
C-b
F
F
C-a
A-a C-b
1
3
4
A
1
2
D
C-a
DEH-3750MP/XU/GS
4
T
F
C
S
5
6
C
C
T
T
F
F
0
9
8
7
$
4
7
4
5
7
C-a
A-a C-b
CD DRIVER
5
C
S
3
S
S
F
T
6
M2 CXB8933
LOADING
/CARRIAGE
MOTOR
M1 CXC4440
SPINDLE MOTOR
1
2
3
2
C
5
8
A
6
C-b
B
C
D
E
F
C-a
DEH-3750MP/XU/GS
8
29
C
S
S
ras
!
C-a C-b
C
C-b
30
1
2
S
C
T
F
B
2
3.3V REGULATOR
C CD CORE UNIT(S10.1)
SPINDLE SERVO LINE
CARRIAGE SERVO LINE
TRACKING SERVO LINE
FOCUS SERVO LINE
SIGNAL LINE
The underlined indicates the switch position.
SWITCHES:
CD CORE UNIT(S10.1)
S901:HOME SWITCH..........ON-OFF
S903:DSCSNS SWITCH......ON-OFF
S904:12EJ SWITCH.............ON-OFF
S905:8EJ SWITCH...............ON-OFF
Decimal points for resistor
and capacitor fixed values
are expressed as :
2.2 ←2R2
0.022 ← R022
1
3
3
4
A
D
E
F
1
2
DEH-3750MP/XU/GS
4
TYPE_A/D
MICRO COMPUTER
2
5
3
6
SRAMLEVEL0
SRAMLEVEL1
SRAMLEVEL2
C-a C-b
3V REGULATOR
6
&
^
6
A
CN721
5
7
4
7
8
A
B
C
D
E
F
5
6
C-b
DEH-3750MP/XU/GS
8
31
1
2
- Waveforms
A
1 DSCSNS
2 8SNS
3 12SNS
4 LOEJ
B
500ms/div 1 DSCSNS
5 CLCONT
4 LOEJ
6 VD
5V/div
5V/div
5V/div
10V/div
500ms/div 1 DSCSNS
2 8SNS
3 12SNS
4 LOEJ
5V/div
5V/div
5V/div
5V/div
8 cm CD Loading operation
Ref.:
GND
Ref.:
GND
Ref.:
GND
Mode:
Normal
Mode:
Normal
Mode:
Normal
1V/div
2s/div
500mV/div
500mV/div
7 SIN
8 CIN
9 TIN
7 SIN
8 CIN
9 TIN
1V/div
1s/div
500mV/div
500mV/div
500ms/div
1V/div
2s/div
500mV/div
500mV/div
12 cm CD-DA setup operation after loading
12 cm CD-ROM(1 session) setup operation
after loading
12 cm CD-ROM(3 sessions) setup operation
after loading
Ref.:
REFO
Ref.:
REFO
Ref.:
REFO
Mode:
Normal
Mode:
Normal
Mode:
Normal
200mV/div 500ms/div @ TE
2V/div
# FE
2V/div
500mV/div 200ms/div # FE
500mV/div
0 FIN
@ TE
9 TIN
12 cm CD-DA Source On setup operation
Source On setup operation
Ref.:
REFO
Ref.:
REFO
Ref.:
REFO
Mode:
Normal
Mode:
Normal
Mode:
Normal
# FE
0 FIN
@ TE
9 TIN
E
Note : 1. The encircled numbers denote measuring points in the circuit diagram.
2. Reference voltage REFO1(1.65V)
12 cm CD Loading operation
0 FIN
! RFOK
7 SIN
D
4
12 cm CD Loading operation
7 SIN
8 CIN
9 TIN
C
5V/div
5V/div
5V/div
5V/div
3
500mV/div 20ms/div
500mV/div
500mV/div
500mV/div
$ MDX
7 SIN
500mV/div 20ms/div
500mV/div
500mV/div
500mV/div
CD-DA Play operation
1V/div
50ms/div
200mV/div
$ MDX
7 SIN
2V/div
1V/div
5µs/div
CD-ROM play operation(Regular track Jump)
Spindle waveform during play operation
Spindle waveform during play operation
(Wider)
Ref.:
REFO
Ref.:
REFO
Ref.:
REFO
Mode:
Normal
Mode:
Normal
Mode:
Normal
F
32
DEH-3750MP/XU/GS
1
2
3
4
5
0 FIN
# FE
6
500mV/div 200ms/div @ TE
500mV/div
% RFAGC
7
500mV/div 2ms/div
500mV/div
% RFAGC
@ TE
9 TIN
8
1V/div
500µs/div
500mV/div
500mV/div
Focus Search waveform
Track Open waveform
1 Track Jump waveform
Ref.:
REFO
Ref.:
REFO
Ref.:
REFO
Mode:
TEST
Mode:
TEST
Mode:
TEST
A
B
% RFAGC
@ TE
9 TIN
1V/div
500µs/div % RFAGC
500mV/div
@ TE
500mV/div
9 TIN
1V/div
1ms/div
500mV/div
500mV/div
% RFAGC
@ TE
9 TIN
1V/div
2ms/div
500mV/div
500mV/div
4 Tracks Jump waveform
10 Tracks Jump waveform
32 Tracks Jump waveform
Ref.:
REFO
Ref.:
REFO
Ref.:
REFO
Mode:
TEST
Mode:
TEST
Mode:
TEST
C
% RFAGC
@ TE
8 CIN
7 SIN
200ms/div ^ LOUT
1V/div
1V/div
& ROUT
500mV/div
2V/div
Search operation(Outter to Inner)
1V/div
1V/div
200µs/div 1 DSCSNS
2 8SNS
3 12SNS
4 LOEJ
Analog audio waveform
5V/div
5V/div
5V/div
5V/div
500ms/div
12 cm CD Eject operation
D
Ref.:
REFO
Ref.:
AGND
Ref.:
GND
Mode:
Normal
Mode:
Normal
Mode:
Normal
1 DSCSNS 5V/div
5 CLCONT 5V/div
4 LOEJ
5V/div
500ms/div 1 DSCSNS
2 8SNS
3 12SNS
4 LOEJ
5V/div
5V/div
5V/div
5V/div
500ms/div 7 SIN
8 CIN
9 TIN
1V/div
500ms/div
500mV/div
500mV/div
E
12 cm CD Eject operation
8 cm CD Eject operation
CD-DA >> CD-ROM mode change(Band key)
Ref.:
GND
Ref.:
GND
Ref.:
REFO
Mode:
Normal
Mode:
Normal
Mode:
Normal
F
DEH-3750MP/XU/GS
5
6
7
8
33
1
7 SIN
8 CIN
9 TIN
A
2
3
1V/div
500ms/div % RFAGC
500mV/div
9 TIN
500mV/div
@ TE
0 FIN
1V/div
1V/div
1V/div
1V/div
CD-ROM >> CD-DA mode change(Band key)
Black dot(800µm) during play
Ref.:
REFO
Ref.:
REFO
Mode:
Normal
Mode:
Normal
4
500µs/div
B
C
D
E
F
34
DEH-3750MP/XU/GS
1
2
3
4
5
6
7
8
A
B
C
D
E
F
DEH-3750MP/XU/GS
5
6
7
8
35
1
2
3
4
4. PCB CONNECTION DIAGRAM
4.1 TUNER AMP UNIT
A
NOTE FOR PCB DIAGRAMS
1.The parts mounted on this PCB
include all necessary parts for
several destination.
For further information for
respective destinations, be sure
to check with the schematic diagram.
2.Viewpoint of PCB diagrams
A
TUNER AMP UNIT
CORD ASSY
1
Capacitor
Connector
2
1
3
5
7 9 11 13 15
3
2
4
6
8 10 12 14 16
SIDE A
B
Chip Part
P.C.Board
SIDE B
C
D
E
C
CN901
F
A
36
DEH-3750MP/XU/GS
1
2
3
4
5
6
7
8
A
SIDE A
REAR OUTPUT
SSY
11 13 15
1 2
0 12 14 16
3 4
ANTENNA
RCA
B
2
1
FM/AM TUNER UNIT
C
D
E
B
CN1801
F
FRONT
A
DEH-3750MP/XU/GS
5
6
7
8
37
1
A
A
2
3
4
TUNER AMP UNIT
1
B
1
C
D
TEST
E
F
A
38
DEH-3750MP/XU/GS
1
2
3
4
PCL
5
6
7
8
A
SIDE B
1
1
B
C
D
EST
PCL
E
F
A
DEH-3750MP/XU/GS
5
6
7
8
39
F
VOLUME
E
SOURCE
1
2
3
4
5
6
40
1
2
LOCAL/BSM
DOWN
LOUDNESS
RIGHT
DISPLAY
AUDIO
KEYBOARD UNIT
2
LCD1801
BAND
LEFT
B
UP
EJECT
A
EQ
CLOCK
1
3
3
4
4.2 KEYBOARD UNIT
SIDE A
B
C
D
B
DEH-3750MP/XU/GS
4
5
B
6
7
KEYBOARD UNIT
8
SIDE B
A
B
C
D
A
CN831
E
F
B
DEH-3750MP/XU/GS
5
6
7
8
41
1
2
3
4
4.3 CD CORE UNIT(S10.1)
C
CD CORE UNIT(S10.1)
SIDE A
A
M2
LOADING
/CARRIAGE
MOTOR
B
M1
SPINDLE
MOTOR
A
C
PICKUP UNIT(P10)(SERVICE)
CN721
D
HOME
E
FE
REFO1
F
C
42
DEH-3750MP/XU/GS
1
2
3
4
5
C
6
7
CD CORE UNIT(S10.1)
8
SIDE B
A
8EJ
12EJ
DSCSNS
B
C
D
E
F
C
DEH-3750MP/XU/GS
5
6
7
8
43
1
2
3
4
5. ELECTRICAL PARTS LIST
A
NOTE:
• Parts whose parts numbers are omitted are subject to being not supplied.
• The part numbers shown below indicate chip components.
Chip Resistor
RS1/_S___J,RS1/__S___J
Chip Capacitor (except for CQS.....)
CKS....., CCS....., CSZS.....
• The > mark found on some component parts indicatesthe importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
Circuit Symbol and No.
B
Circuit Symbol and No.
Part No.
A
Unit Number:YWM5037(GS)
Unit Number:YWM5073(CS)
Unit Number:YWM5039(CN)
Unit Name:Tuner Amp Unit
Part No.
D
D
D
D
D
931
932
971
972
991
(A,55,93) Diode
(A,60,91) Diode
(A,60,104) Diode
(A,57,104) Diode
(A,13,48) Diode
HZS7L(C3)
HZS7L(A1)
S5688G
S5688G
HZS7L(C3)
L
L
L
L
L
151
401
402
404
601
(A,141,79) Inductor
(A,155,55) Inductor
(A,155,92) Inductor
(A,155,99) Ferri-Inductor
(A,64,64) Inductor
LAU2R2K
LAU1R0K
LAU1R0K
LAU4R7K
LAU1R0K
MISCELLANEOUS
C
D
E
F
IC 151
IC 302
IC 601
IC 921
IC 961
(B,132,80) IC
(A,93,132) IC
(B,85,52) IC
(A,6,119) IC
(A,46,62) IC
PML003AM
PAL007A
PE5460A
NJM2388F84
S-80834CNY
IC 981
Q 352
Q 452
Q 453
Q 801
(B,146,27) IC
(B,159,125) Transistor
(B,140,115) Transistor
(B,135,107) Transistor
(B,28,25) Transistor
BA33BC0FP
IMH3A
DTC124EU
DTA124EU
2SA1036K
Q
Q
Q
Q
Q
821
822
911
912
931
(B,20,29)
(B,17,33)
(A,6,100)
(B,17,64)
(B,70,86)
Transistor
Transistor
Transistor
Transistor
Transistor
2SA1036K
DTC114EU
2SD2396
IMD2A
IMX1
Q
Q
Q
Q
D
991
992
993
994
831
(A,6,66) Transistor
(B,25,50) Transistor
(B,32,41) Transistor
(B,39,41) Transistor
(A,139,18) Diode
2SD2396
IMD2A
2SA1036K
DTC114EU
1SS133
D
D
D
D
D
832
833
834
835
836
(A,122,23)
(A,114,24)
(A,111,19)
(A,113,10)
(A,126,25)
Diode
Diode
Diode
Diode
Diode
1SS133
1SS133
1SS133
1SS133
1SS133
D
D
D
D
D
837
838
839
840
841
(A,134,21)
(A,119,18)
(A,117,18)
(A,118,15)
(A,116,15)
Diode
Diode
Diode
Diode
Diode
1SS133
1SS133
1SS133
1SS133
1SS133
D
D
D
D
D
842
901
902
911
912
(A,130,25) Diode
(A,69,113) Diode
(A,72,110) Diode
(A,30,78) Diode
(A,18,60) Diode
1SS133
S5688G
S5688G
S5688G
HZS6L(B2)
L 604
L 801
L 901
X 601
>FU352
(A,104,66) Inductor
(A,28,15) Inductor
LAU1R0K
LAU2R2K
(A,35,103) Choke Coil 600µH CTH1280
(A,101,61) Radiator 12.58291MHz CSS1402
(B,140,136) Fuse 3A
CEK1286
Z 401
AR401
>
(A,163,100) FM/AM Tuner Unit CWE1646
(A,159,119) Surge Protector DSP-201M-S00B
Fuse 10A
RESISTORS
R
R
R
R
R
153
154
155
156
157
(B,127,104)
(B,147,93)
(B,127,102)
(B,136,94)
(B,84,79)
RS1/16S471J
RS1/16S471J
RS1/16S471J
RS1/16S471J
RAB4C102J
R
R
R
R
R
301
353
354
357
358
(A,100,96)
(B,141,122)
(B,163,125)
(B,145,130)
(B,160,134)
RD1/4PU153J
RS1/16S471J
RS1/16S471J
RS1/16S223J
RS1/16S223J
R
R
R
R
R
405
407
408
409
410
(B,158,62)
(B,159,83)
(B,159,85)
(B,159,86)
(B,159,88)
RS1/16S681J
RS1/16S681J
RS1/16S681J
RS1/16S681J
RS1/16S681J
R
R
R
R
R
414
420
421
454
455
(B,156,88)
(B,105,44)
(B,159,79)
(B,133,114)
(B,141,132)
RS1/16S0R0J
RS1/16S681J
RS1/16S473J
RS1/16S103J
RS1/16S153J
R
R
R
R
R
456
457
601
602
603
(B,139,132)
(A,120,54)
(B,102,49) (GS,CN)
(B,102,51)
(B,63,75)
RS1/16S221J
RD1/4PU681J
RS1/16S473J
RS1/16S473J
RS1/16S103J
(B,60,75)
RS1/16S103J
R 604
44
CEK1208
DEH-3750MP/XU/GS
1
2
3
4
5
Circuit Symbol and No.
6
7
Part No.
Circuit Symbol and No.
R
R
R
R
605
606
608
609
(B,84,21)
(B,110,41)
(B,104,63)
(A,102,47)
RS1/16S222J
RS1/16S104J
RS1/16S0R0J
RD1/4PU473J
R
R
R
R
981
991
992
995
R
R
R
R
R
610
611
612
613
614
(A,129,44)
(B,105,50)
(B,111,14)
(B,107,24)
(B,123,36)
RD1/4PU681J
RS1/16S473J
RS1/16S104J
RS1/16S473J
RS1/16S104J
R 996
R
R
R
R
R
620
633
720
722
723
(B,94,40)
(B,65,40)
(B,65,23)
(B,55,27)
(B,55,43)
RS1/16S0R0J
RS1/16S104J
RS1/16S473J
RS1/16S682J
RS1/16S682J
R
R
R
R
R
724
725
727
735
739
(B,45,16)
(B,44,36)
(A,35,22)
(B,56,28)
(B,53,36)
RS1/16S473J
RS1/16S682J
RD1/4PU682J
RS1/16S102J
RS1/16S0R0J
R
R
R
R
R
740
744
745
746
747
(B,54,34)
(B,45,55)
(B,54,24)
(B,55,19)
(A,88,33)
RS1/16S0R0J
RS1/16S221J
RS1/16S221J
RS1/16S221J
RD1/4PU221J
R
R
R
R
R
748
750
751
801
802
(B,90,24)
(B,61,22)
(B,55,21)
(B,24,27)
(B,28,20)
RS1/16S221J
RS1/16S0R0J
RS1/16S0R0J
RS1/16S153J
RS1/16S153J
R
R
R
R
R
803
821
823
833
834
(B,13,36)
(B,22,33)
(B,26,31)
(B,105,16)
(B,88,15)
RS1/16S222J
RS1/16S222J
RS1/16S103J
RS1/16S222J
RS1/16S222J
R
R
R
R
R
836
837
838
841
848
(B,131,21)
(A,128,21)
(A,113,44)
(B,15,28)
(A,100,41)
RS1/16S104J
RD1/4PU103J
RD1/4PU102J
RS1/16S1R0J
RD1/4PU102J
R
R
R
R
R
851
852
853
854
855
(A,97,41)
(B,112,17)
(B,107,22)
(B,105,14)
(B,103,20)
RD1/4PU102J
RS1/16S102J
RS1/16S102J
RS1/16S222J
RS1/16S222J
R
R
R
R
R
857
858
911
912
923
(B,104,18)
(A,127,27)
(B,11,68)
(A,14,68)
(B,10,110)
RS1/16S222J
RD1/4PU102J
RS1/16S223J
RD1/4PU152J
RS1/16S473J
R
R
R
R
R
931
932
933
934
935
(B,62,92)
(B,65,85)
(A,54,99)
(B,64,95)
(B,64,92)
RS1/16S473J
RS1/16S104J
RD1/4PU102J
RS1/16S473J
RS1/16S473J
R
R
R
R
R
936
940
941
955
961
(B,70,89)
(B,66,74)
(B,66,72)
(B,42,76)
(B,59,68)
RS1/16S473J
RS1/16S104J
RS1/16S104J
RS1/16S473J
RS1/16S102J
R 962
(B,45,66)
RS1/16S822J
8
Part No.
(A,136,38)
(A,13,53)
(A,18,50)
(B,28,42)
RD1/4PU1R8J
RD1/4PU271J
RD1/4PU121J
RS1/16S103J
(B,26,44)
RS1/16S222J
CAPACITORS
C
C
C
C
C
151
152
153
154
155
(B,159,71)
(B,159,73)
(B,122,74)
(B,145,82)
(A,121,78)
CKSRYB224K16
CKSRYB224K16
CKSRYB105K10
CKSRYB105K10
CEJQ4R7M35
C
C
C
C
C
156
157
158
161
162
(A,143,88)
(B,123,85)
(B,143,95)
(B,125,99)
(B,139,94)
CEJQ4R7M35
CKSRYB153K50
CKSRYB153K50
CCSRCH100D50
CCSRCH100D50
C
C
C
C
C
163
164
165
166
167
(B,131,95)
(B,139,96)
(B,140,70)
(A,135,66)
(A,124,66)
CCSRCH100D50
CCSRCH100D50
CKSRYB104K16
CEJQ470M10
CEJQ100M16
C
C
C
C
C
301
302
303
304
309
(A,135,111)
(A,145,119)
(A,130,111)
(A,143,125)
(B,135,136)
CFTNA224J50
CFTNA224J50
CFTNA224J50
CFTNA224J50
CKSQYB225K10
C
C
C
C
C
310
312
313
353
354
(B,122,143)
(A,100,118)
(B,40,122)
(A,132,102)
(A,140,102)
CKSQYB225K10
CEJQ100M16
CKSRYB104K16
CEJQ2R2M50
CEJQ2R2M50
C
C
C
C
C
401
402
403
404
405
(B,164,67)
(B,153,56)
(A,150,53)
(A,153,87)
(B,166,94)
CKSRYB103K50
CKSRYB103K50
CEJQ470M6R3
CEJQ101M10
CKSRYB104K25
C
C
C
C
C
420
451
601
604
605
(B,112,68)
(A,134,131)
(B,54,64)
(B,97,64)
(B,101,64)
CCSRCH470J50
CEJQ330M10
CKSRYB104K25
CCSRCH200J50
CCSRCH200J50
C
C
C
C
C
610
611
725
726
801
(A,94,71)
(B,97,68)
(B,120,74)
(B,148,84)
(B,11,36)
CEJQ100M16
CKSRYB224K16
CKSRYB102K50
CKSRYB102K50
CKSRYB104K16
C
C
C
C
C
901
911
912
913
921
(A,46,121) 3300µF/16V
(A,16,76)
(B,12,64)
(A,25,86) 470µF/16V
(A,14,115)
CCH1494
CEJQ470M10
CKSRYB103K50
CCH1331
CEJQ101M16
C
C
C
C
C
922
923
924
961
963
(A,18,107)
(B,18,110)
(B,17,101)
(B,50,66)
(A,46,69)
CEJQ221M10
CKSRYB103K50
CKSRYB103K50
CKSRYB473K50
CEJQ100M16
C 982
C 983
(B,145,40)
(A,147,35)
CKSRYB103K50
CEJQ220M16
DEH-3750MP/XU/GS
5
6
A
7
8
B
C
D
E
F
45
1
2
Circuit Symbol and No.
C 991
C 992
C 994
A
(B,20,50)
(A,26,60)
(A,30,34) 470µF/16V
3
Part No.
Circuit Symbol and No.
CKSRYB473K50
CEJQ101M16
CCH1331
B
Unit Number:
MISCELLANEOUS
B
(B,29,96)
(A,15,27)
(B,19,40)
(B,24,40)
(A,25,38)
IC
IC
Diode
Diode
(GS,CN) LED
PD6340A
TSOP4840SB1
MA152WK
MA152WA
CL-490SWFSD(12)
D 1805
D 1806
(A,25,38) (CS) LED
(A,25,128) (GS,CN) LED
(A,25,128) (CS) LED
(A,13,22) LED
(A,26,9) LED
CL-490S-WF-SD
CL-490SWFSD(12)
CL-490S-WF-SD
SML-310PT
SML-310PT
D
D
D
D
D
1807
1808
1809
1810
1811
(A,30,27) LED
(A,39,50) LED
(A,5,10) LED
(A,34,9) LED
(A,39,84) LED
SML-310PT
SML-310PT
SML-310PT
SML-310PT
SML-310PT
D
D
D
D
D
1812
1813
1814
1815
1816
(A,39,73) LED
(A,39,61) LED
(A,39,96) LED
(A,39,107) LED
(A,39,119) LED
SML-310PT
SML-310PT
SML-310PT
SML-310PT
SML-310PT
D
D
X
S
IL
1817
1818
1801
1827
1801
(A,39,35) LED
(A,39,131) LED
D 1804
C
D
LCD1801
CL-190UB2-X
CL-190UB2-X
(B,37,83) Ceramic Resonator 5.00MHz CSS1547
(A,23,19) Encoder(VOLUME) YSD5002
(B,23,147) Lamp 40mA,14V CEL1651
(A,16,45) (GS,CN) LCD
(A,16,45) (CS) LCD
F
1801
1802
1803
1804
1805
(B,23,43)
(B,20,43)
(B,22,33)
(B,22,31)
(B,19,34)
RS1/16S222J
RS1/16S222J
RS1/16S151J
RS1/16S181J
RS1/16S181J
R
R
R
R
R
1806
1807
1808
1809
1810
(B,29,142)
(B,26,142)
(B,13,31)
(B,24,33)
(B,25,30)
RS1/16S181J
RS1/16S181J
RS1/16S181J
RS1/16S151J
RS1/16S181J
R
R
R
R
R
1811
1812
1813
1814
1815
(B,21,35)
(B,29,140)
(B,26,140)
(B,15,31)
(B,25,33)
RS1/16S181J
RS1/16S181J
RS1/16S181J
RS1/16S181J
RS1/16S151J
R
R
R
R
R
1816
1817
1818
1819
1820
(B,25,29)
(B,22,35)
(B,29,137)
(B,26,137)
(B,17,31)
RS1/16S151J
RS1/16S151J
RS1/16S151J
RS1/16S151J
RS1/16S0R0J
(B,27,25)
RS1/16S151J
46
(B,33,23)
(B,35,23)
(B,12,21)
(B,20,20)
Part No.
RS1/16S472J
RS1/16S472J
RS1/16S2R2J
RS1/16S121J
C
C
C
C
C
1801
1802
1811
1812
1813
(B,18,20)
(B,27,52)
(A,25,32)
(A,20,129)
(A,39,33)
CKSRYB474K10
CKSRYF104Z25
CKSRYF104Z25
CKSRYF104Z25
CKSRYF104Z25
C 1814
(A,39,133)
CKSRYF104Z25
C
Unit Number:CWX3096
Unit Name:CD Core Unit(S10.1)
MISCELLANEOUS
IC 201
IC 203
IC 301
IC 701
IC 703
(A,39,24)
(B,45,78)
(A,49,88)
(A,48,51)
(A,30,44)
IC
IC
IC
IC
IC
UPD63763GJ
NJM2885DL1-33
BA5835FP
PE5454A
S-812C33AUA-C2N
Q
Q
L
L
L
101
701
203
207
209
(A,20,22)
(B,62,59)
(A,53,32)
(A,53,31)
(A,26,20)
Transistor
Transistor
Inductor
Inductor
Inductor
2SA1577
UN2111
CTF1389
CTF1389
CTF1389
L
X
X
S
S
703
201
701
901
903
(A,64,49) Inductor
CTF1389
(A,51,35) Ceramic Resonator 16.934MHz CSS1603
(A,59,53) Ceramic Resonator 4.00MHz CSS1652
(A,15,43) Switch(HOME)
CSN1067
(B,53,100) Switch(DSCSNS) CSN1068
(B,35,108) Switch(12EJ)
(B,48,109) Switch(8EJ)
CSN1067
CSN1067
RESISTORS
R
R
R
R
R
R 1821
1831
1832
1833
1835
S 904
S 905
YAW5027
YAW5015
RESISTORS
E
R
R
R
R
CAPACITORS
Unit Name:Keyboard Unit
IC 1801
IC 1802
D 1801
D 1802
D 1803
4
R
R
R
R
R
101
102
103
201
202
(A,22,24)
(A,22,26)
(A,25,25)
(A,53,16)
(A,55,21)
RS1/10SR2R4J
RS1/10SR2R4J
RS1/10SR2R7J
RS1/16SS102J
RS1/16SS333J
R
R
R
R
R
221
222
225
226
227
(B,31,18)
(B,26,18)
(A,27,8)
(A,27,7)
(B,33,10)
RS1/16SS103J
RS1/16SS103J
RS1/16SS103J
RS1/16SS393J
RS1/16SS562J
R
R
R
R
R
228
229
232
241
243
(B,36,8)
(B,34,8)
(B,35,10)
(B,42,28)
(B,44,28)
RS1/16SS122J
RS1/16SS472J
RS1/16SS122J
RS1/16SS333J
RS1/16SS333J
R
R
R
R
R
245
301
302
304
305
(A,39,38)
(A,48,78)
(A,42,78)
(A,50,78)
(A,42,77)
RS1/16SS333J
RS1/16SS183J
RS1/16SS822J
RS1/16SS183J
RS1/16SS822J
R 307
(A,36,85)
RS1/16SS183J
DEH-3750MP/XU/GS
1
2
3
4
5
Circuit Symbol and No.
6
7
Part No.
R
R
R
R
308
309
310
601
(A,32,83)
(A,38,89)
(A,35,88)
(B,43,59)
RS1/16SS183J
RS1/16SS183J
RS1/16SS183J
RS1/16S101J
R
R
R
R
R
602
606
607
608
705
(B,41,62)
(B,44,67)
(B,43,56)
(B,36,67)
(B,50,59)
RS1/16S101J
RS1/16S0R0J
RS1/16SS0R0J
RS1/16SS0R0J
RS1/16SS221J
R
R
R
R
R
706
707
708
710
711
(B,57,61)
(A,62,47)
(B,50,57)
(A,28,77)
(B,44,53)
RS1/16SS221J
RS1/16SS473J
RS1/16SS221J
RS1/16SS102J
RS1/16SS221J
R
R
R
R
R
714
716
719
720
724
(B,51,53)
(A,63,56)
(B,49,45)
(B,46,52)
(A,62,42)
RS1/16SS473J
RS1/16SS472J
RS1/16SS221J
RS1/16SS471J
RS1/16S473J
R
R
R
R
R
725
726
727
729
730
(B,57,43)
(A,52,41)
(B,50,54)
(A,57,40)
(A,65,41)
RS1/16SS222J
RS1/16SS103J
RS1/16SS473J
RS1/16SS223J
RS1/16SS473J
R
R
R
R
R
731
737
740
742
746
(A,53,41)
(A,41,42)
(A,35,46)
(A,50,41)
(B,60,56)
RS1/16SS104J
RS1/16SS104J
RS1/16SS473J
RS1/16SS104J
RS1/16SS104J
R
R
R
R
R
750
754
755
765
769
(A,39,59)
(B,48,60)
(A,43,61)
(B,51,40)
(B,48,40)
RS1/16SS473J
RS1/16SS102J
RS1/16SS102J
RAB4CQ221J
RAB4CQ221J
R
R
R
R
R
773
777
778
779
901
(B,39,37)
(B,48,51)
(B,48,52)
(B,45,54)
(B,52,65)
RAB4CQ221J
RS1/16SS221J
RS1/16SS221J
RS1/16SS221J
RAB4CQ221J
R
R
R
R
R
905
906
908
910
911
(B,54,60)
(B,56,68)
(B,45,69)
(B,44,69)
(B,40,73)
RS1/16SS221J
RS1/16SS221J
RS1/16SS0R0J
RS1/16SS0R0J
RS1/16SS102J
CAPACITORS
Circuit Symbol and No.
103
105
108
110
201
(B,14,8) 100µF/16V
(A,19,15)
(B,39,16)
(A,18,6)
(A,51,14)
CCH1504
CKSSYB104K10
CKSSYB104K10
CKSSYB104K10
CKSSYB102K50
C
C
C
C
C
202
203
204
205
208
(B,50,17)
(A,55,23)
(B,28,22)
(A,53,25)
(B,44,25)
CKSSYB104K10
CKSSYB104K10
CEVW220M6R3
CKSSYB104K10
CKSSYB104K10
C
C
C
C
209
212
216
217
(A,54,29)
(A,45,37)
(A,25,8)
(A,28,12)
CKSSYB104K10
CKSRYB105K10
CKSSYB332K50
CKSSYB104K10
Part No.
C 218
(A,25,7)
CKSSYB473K10
C
C
C
C
C
219
220
221
222
223
(A,34,7)
(A,33,11)
(B,35,6)
(B,35,8)
(B,33,8)
CKSSYB104K10
CKSSYB182K50
CKSSYB104K10
CCSSCH560J50
CCSSCH4R0C50
C
C
C
C
C
224
225
226
227
228
(B,40,16)
(B,45,14)
(B,43,12)
(A,45,10)
(A,49,9)
CKSSYB104K10
CKSSYB103K16
CCSSCH680J50
CCSSCH470J50
CKSSYB103K16
C
C
C
C
C
234
237
239
242
243
(B,36,81)
(B,38,29)
(B,34,10)
(B,58,32)
(B,39,76)
CEVW221M4
CKSSYB104K10
CCSSCH220J50
CKSSYB104K10
CKSSYB104K10
C
C
C
C
C
244
246
251
260
301
(B,49,70)
(A,23,19)
(B,28,31)
(A,54,25)
(A,43,78)
CKSSYB104K10
CKSSYB104K10
CKSRYB102K50
CKSSYB104K10
CKSSYB221K50
C
C
C
C
C
302
303
304
305
307
(A,50,79)
(A,37,85)
(A,39,89)
(B,34,92)
(B,56,90)
CKSSYB221K50
CKSSYB472K25
CKSSYB103K16
CEVW101M16
CKSSYB104K10
C
C
C
C
C
601
602
701
703
706
(B,46,60)
(B,41,65)
(A,64,46)
(B,50,61)
(B,50,62)
CCSRCH102J50
CCSRCH102J50
CKSSYB104K10
CKSSYB103K16
CKSSYB104K10
C
C
C
C
C
707
712
714
716
722
(A,36,45)
(A,22,42)
(B,60,45)
(A,61,40)
(B,52,48)
CKSSYB104K10
CKSRYB224K16
CKSSYB104K10
CKSSYB103K16
CKSQYB475K6R3
C
C
C
C
C
723
903
906
907
910
(A,26,41)
(B,56,70)
(A,40,77)
(A,47,76)
(B,60,71)
CKSRYB105K10
CKSSYB471K50
CKSRYB224K16
CKSSYB103K16
CKSQYB225K10
6
B
C
D
Pickup Unit(P10)(Service)
Motor Unit(SPINDLE)
CXX1647
CXC4440
Motor Unit(LOADING/CARRIAGE) CXB8933
E
F
DEH-3750MP/XU/GS
5
A
Miscellaneous Parts List
M 1
M 2
C
C
C
C
C
8
7
8
47
1
2
3
4
6. ADJUSTMENT
6.1 CD ADJUSTMENT
A
1) Cautions on adjustments
• In this product the single voltage (3.3V) is used for the
regulator. The reference voltage is the REFO1 (1.65V)
instead of the GND.
If you should mistakenly short the REFO1 with the GND
during adjustment, accurate voltage will not be obtained,
and the servo’s misoperation will apply excessive shock
to the pickup. To avoid such problems:
a. Do not mix up the REFO1 with the GND when
connecting the (-) probe of measuring instruments.
Especially on an oscilloscope, avoid connecting the (-)
probe for CH1 to the GND.
b. In many cases, measuring instruments have the same
potential as that for the (-) probe. Be sure to set the
measuring instruments to the floating state.
c. If you have mistakenly connected the REFO1 to the GND,
turn off the regulator or the power immediately.
B
• Before mounting and removing filters or leads for
adjustment, be sure to turn off the regulator.
• For stable circuit operation, keep the mechanism
operating for about one minute or more after the
regulator is turned on.
C
2) Test mode
This mode is used to adjust the CD mechanism module.
• To enter the test mode.
While pressing the 4 and 6 keys at the same time, reset.
• To exit from the test mode.
Turn off the ACC and back up.
Notes:
a. During ejection, do not press any other keys than the
EJECT key until the loaded disc is ejected.
b. If you have pressed the (→) key or (←) key during focus
search, turn off the power immediately to protect the
actuator from damage caused by the lens stuck.
c. For the TR jump modes except 100TR, the track jump
operation will continue even if the key is released.
d. For the CRG move and 100TR jump modes, the tracking
loop will be closed at the same time when the key is
released.
e. When the power is turned off and on, the jump mode
is reset to the single TR (91), the RF amp gain is set to 0dB,
and the auto-adjustment values are reset to the default
settings.
• In the test mode, any software protections will not
work. Avoid applying any mechanical or electrical
shock to the mechanism during adjustment.
• The RFI and RFO signals with a wide frequency range
are easy to oscillate. When observing the signals,
insert a resistor of 1k ohms in series.
• The load and eject operation is not guarantied with the
mechanism upside down. If the mechanism is blocked
due to mistaken eject operation, reset the product or
turn off and on the ACC to restore it.
D
E
F
48
DEH-3750MP/XU/GS
1
2
3
4
5
6
7
8
- Flow Chart
[4]+[6]+Reset or
[4]+[6]+BU+ACC
[KEY]
Contents
A
Test Mode In
Display
[CD]or[SOURCE]
Source On
TRK
SEC
MIN
[BAND]
[3]
Power On
Power On
[2]
(T.Offset is adjusted)
[4]
(T.Offset is not adjusted)
RF AMP *1
Gain switching
SPINDLE *9
Speed switching
TRK 99 MIN 99 SEC 99
TRK GGMIN GGSEC GG
TRK SP MIN SP SEC SP
TRK 00 MIN00 SEC 00
B
[BAND]
[3]
Power Off
Focus Close
S curve check
TRK
MIN
SEC
TRK
[6]
Focus Mode *2
switching
TRK
0x MIN0x SEC 0x
91 MIN91 SEC 91
[1]
[→]
Tracking Servo
Close
CRG+
TRK
or
[BAND]
[1]
Power Off
T.Close and AGC
T.Close
Applicable servomechanism
Applicable servomechanism
TRK
MIN
SEC
TRK
?tr
MIN
00 MIN00 SEC00
99 MIN99 SEC99
SEC
TRK
?min ?sec
?tr
MIN
TRK
TRK
[6]
or
00 MIN00 SEC00
99 MIN99 SEC 99
TRK
[3]
SEC
TRK
or
00 MIN00 SEC00
99 MIN 99 SEC 99
Automatic adjustment
switching *3
TRK
TRK
?? MIN?? SEC ??
[→]
[←]
CRG-
T.Balance adjustment /
TRK8x MIN8x SEC8x
TRK8x MIN8x SEC8x
TRK ?? MIN?? SEC ??
RF AGC coefficient display
TRK ?? MIN ?? SEC ??
[2]
*8
CRG-
CRG+
RF AGC /
?min ?sec
[←]
*8
or
TRK 9x MIN 9x SEC 9x
or
[2]
T.BAL coefficient display
TRK 9x MIN 9x SEC 9x
C
[1]
F,T,RF AGC *7
[BAND]
Power Off
TRK
MIN
[3]
F.Bias display switching
SEC
TRK
[6]
F,T AGC / F.Bias
RF AGC
?? MIN?? SEC ??
TRK
?tr
MIN
SEC
?min ?sec
[→]
*4
CRG/TR Jump +
CRG/TR Jump *5
value switching
TRK
?tr
MIN
SEC
TRK
?min ?sec
?tr
MIN
SEC
?min ?sec
[←]
*4
CRG/TR Jump TRK
?tr
MIN
SEC
?min ?sec
[2]
Tracking Open
TRK
or
8x MIN8x SEC 8x
9xMIN 9xSEC 9x
TRK
*6
[BAND]
[2]
Power Off
Tracking Open
TRK
MIN
SEC
TRK8x MIN8x SEC8x
or
TRK 9x MIN 9x SEC 9x
D
*1)
→
TYP
TRK
MIN
SEC
*2) Focus Close
→
→
-6dB
TRK 06 MIN 06 SEC 06
-12dB
Operation
[Key]
TRK 12 MIN 12 SEC 12
Test Mode
TRK 00 MIN 00 SEC 00
(TRK 99 MIN 99 SEC 99)
S.Curve check setting
→
TRK 01 MIN 01 SEC 01
[BAND] Power On / Off
F EQ measurement setting
TRK 02 MIN 02 SEC 02
[→]
CRG + / TR Jump +
(Direction of the external surface)
[←]
CRG - / TR Jump (Direction of the internal surface)
[1]
U.CLS and AGC and Applicable servomechanism /
AGC, AGC display setting
[2]
RF Gain switching / Offset adjustment display /
T.Balance adjustment / T.Open
[3]
Close, S.Curve / Rough Servo and RF AGC /
F, T, RF AGC
[4]
SPDL 1X / 2X switching
As for the double speed (2x), audio output cannot be supported.
[5]
Error Rate measurement
[6]
F.Mode switching / Tracking Close /
CRG • TR Jump switching
*3) F.Offset Display → T.Offset Display → Switch to the order of the original display
*4) 1TR / 32TR / 100TR
*5) Single TR → 32TR → 100TR → CRG Move
9x(8x) : 91(81)
92(82)
93(83)
94(84)
*6) Only at the time of CRG move, 100TR jump
*7) TRK/MIN/SEC → F.AGC → T.AGC → F Bias → RF AGC
E
1st - ON : ERR count Beginning (30Sec)
2nd - ON : BER display data [%]
*8) CRG motor voltage = 2[V]
*9) Applicability : A, B, C, D, E, F
TYP(1X) →
2X
→
TRK
MIN
SEC
TRK 22 MIN 22 SEC 22
Applicability : G
TYP(2X) →
1X
TRK 11 MIN 11 SEC 11
TRK
MIN
SEC
1X
TRK 11 MIN 11 SEC 11
→
F
2X
TRK 22 MIN 22 SEC 22
As for the double speed (2x), audio output cannot be supported
DEH-3750MP/XU/GS
5
6
7
8
49
1
2
3
4
6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT
A
• Note :
The grating angle of the PU unit cannot be adjusted after the PU unit is changed. The PU unit in the CD mechanism
module is adjusted on the production line to match the CD mechanism module and is thus the best adjusted PU
unit for the CD mechanism module. Changing the PU unit is thus best considered as a last resort. However, if the
PU unit must be changed, the grating should be checked using the procedure below.
• Purpose :
To check that the grating is within an acceptable range when the PU unit is changed.
• Symptoms of Mal-adjustment :
If the grating is off by a large amount symptoms such as being unable to close tracking, being unable to perform
track search operations, or taking a long time for track searching.
B
• Method :
• Measuring Equipment
• Measuring Points
• Disc
• Mode
• Oscilloscope, Two L.P.F.
• E, F, REFO1
• TCD-782
• TEST MODE
CD CORE UNIT(S10.1)
C
L.P.F.
E
Xch
100kΩ
F
Oscilloscope
390pF
VREF
Ych
100kΩ
390pF
VREF
L.P.F.
F
E
D
REFO1
• Checking Procedure
1. In test mode, load the disc and switch the 3V regulator on.
2. Using the → and ← buttons, move the PU unit to the innermost track.
3. Press key 3 to close focus, the display should read "91". Press key 2 to implement the tracking balance
adjustment the display should now read "81". Press key 3. The display will change, returning to "81" on the
fourth press.
4. As shown in the diagram above, monitor the LPF outputs using the oscilloscope and check that the phase
difference is within 75° . Refer to the photographs supplied to determine the phase angle.
5. If the phase difference is determined to be greater than 75° try changing the PU unit to see if there is any
improvement. If, after trying this a number of times, the grating angle does not become less than 75° then the
mechanism should be judged to be at fault.
• Note
Because of eccentricity in the disc and a slight misalignment of the clamping center the grating waveform may be
seen to "wobble" ( the phase difference changes as the disc rotates). The angle specified above indicates the
average angle.
• Hint
Reloading the disc changes the clamp position and may decrease the "wobble".
E
F
50
DEH-3750MP/XU/GS
1
2
3
4
5
6
7
8
Ech → Xch 20mV/div, AC
Fch → Ych 20mV/div, AC
Grating waveform
A
0°
30°
B
45°
60°
C
D
75°
90°
E
F
DEH-3750MP/XU/GS
5
6
7
8
51
1
2
3
4
6.3 ERROR MODE
- Error Messages
Error is displayed with number for Error cause when CD is inoperative or stops with Error during operation.
The purpose is to reduce nonsense calls from users as well as to assist all related analysis and repair for defects
at service station.
A
(1) Basic Display Method
1) When CSMOD (CD mode area for system) is SERRORM, Error code will be written in DMIN (minutes area for
display), DSEC (seconds area for display). The same data shall be written in DMIN and DSEC. DTNO is blank as
usual.
2) Display Example of Head Unit
The following is about LCD display ability. xx is Error number.
8 digits
ERROR–xx
B
6 digits
ERR–xx
4 digits
E–xx
OR
Err–xx
(2) Error Code List
No. Classification Contents
10 Electricity
Carriage Home NG
Details • Cause
CRG can’t move to the inner.
CRG can’t move from the inner.
→ HOME SW failure, CRG movement failure.
Focus can’t be caught.
→ Back of Disc / Severe dirt and vibration.
C
11
Electricity
Focus Search NG
12
Electricity
Spindle Lock NG
Subcode NG
Not spindle, lock. Wrong subcode (can’t read).
→ Defective Spindle. Scratch and dirt on Disc. Intense vibration.
RF-amp NG
The appropriate gain of the RF amp cannot be obtained.
→ Defective spindle.
→ Scratched or dirty disc. Severe vibration. Abnormal CD signals.
17
D
Electricity
→ Blanc CD-R disc. Disc inserted upside down.
AGC protection doesn’t work, out of Focus soon.
Setup NG
→ Scratch on Disc/Severe dirt and vibration.
22
Disc
Impossible to play
There is no playable MP3 or WMA file present in a disc.
23
Disc
File Format NG
Contents are stored in an incompatible file format.
→ The contents in a CD-ROM disc inserted are recorded in a file format
other than ISO9660 Level-1 and 2.
30
Electricity
Search Time Out
Can’t reach the target address.
44
Disc
Impossible to play
There is no playable TRK No. present in a disc.
→ All TRK Nos. In a disc inserted are specified as a track which should
be skipped, in the track skip information.
50
Mecha
Disc Load / Eject NG
Disc loading/ejection cannot be complete.
→ Foreign objects entered into the mechanism. Disc caught in between
during loading/ejection.
A0
System
Power NG
→ No MP3 or WMA file exists in a CD-ROM disc inserted.
→ Defective CRG/tracking, or scratch on Disc.
E
Power supply (VD) isn’t connected to the ground.
→ Defective SW transistor. Abnormal power (failed connector)
Note : Error doesn’t display in mechanism only. (CD off causes mechanism off)
If TOC can’t be read, error wouldn’t occur, but mechanism still continues its operation.
The upper digits of error code is mainly classified by 3 kinds as follows:
1x: Setup related error, 3x: Search related error, Ax: Other errors.
F
52
DEH-3750MP/XU/GS
1
2
3
4
5
6
7
8
6.4 SYSTEM MICROCOMPUTER TEST PROGRAM
A
- PCL Output
In the normal operation mode (with the detachable panel installed, the ACC switched ON, the standby mode cancelled),
shift the TESTIN (Pin 15) terminal to H. The clock signal is output from the PCL terminal (Pin 14). The frequency of the
clock signal is 786.432kHz that is one 16th of the fundamental frequency. The clock signal should be 786.432kHz ± 31.5Hz.
If the clock signal is out of the range, the X'tal (X601) should be replaced with new one.
B
C
D
E
F
DEH-3750MP/XU/GS
5
6
7
8
53
1
2
3
4
7. GENERAL INFORMATION
7.1 DIAGNOSIS
A
7.1.1 DISASSEMBLY
- Removing the Case (not shown)
1. Remove the Case.
CD Mechanism Module
- Removing the CD Mechanism Module (Fig.1)
1
Remove the four screws.
B
1
Disconnect the connector and then remove the
CD Mechanism Module.
1
- Removing the Grille Assy (Fig.1)
2
Release the two latchs and then remove
the Grille Assy.
1
C
2
2
1
Fig.1
Grille Assy
- Removing the Tuner Amp Unit (Fig.2)
1
Remove the screw.
3
3
D
2
Straighten the tabs at three locations
indicated.
3
Remove the three screws and then
remove the Tuner Amp Unit.
3
1
E
2
2
2
Tuner Amp Unit
Fig.2
F
54
DEH-3750MP/XU/GS
1
2
3
4
5
6
7
8
- How to hold the Mechanism Unit
1. Hold the top and bottom frame.
2. Do not squeeze top frame's front portion too tight,
because it is fragile.
A
B
Do not squeeze.
- Removing the Upper and Lower Frames
1. With a disc clamped, remove the four springs (A),
the two springs (B), the two springs (C), and the
four screws.
2. To remove the upper frame, open it on the fulcrum
A.
3. While lifting the carriage mechanism, remove the
three dampers.
4. With the frames removed, insert the connectors
coming from the main unit and eject the disc.
Caution: Before installing the carriage mechanism in
the frames, be sure to apply some alcohol to the
dampers and set the mechanism to the clamp mode.
Upper Frame
A
A
C
C
A
A
Carriage Mechanism
B
Damper
Lower Frame
C
A
D
Damper
B
Damper
E
F
DEH-3750MP/XU/GS
5
6
7
8
55
1
2
3
4
- Removing the Pickup Unit
1. Apply shorting solder to the Pickup flexible cable.
Disconnect the cable.
2. Set the mechanism to the clamp mode.
3. Remove the lead wires from the inner holder.
4. Remove the washer, styling holder, change arm,
and pickup lock arm.
5. While releasing from the hook of the inner holder,
lift the end of the feed screw.
Caution: In assembling, move the planet gear to the
load/eject position before setting the feed screw
in the inner holder.
A
Shorting
Solder
B
Washer
C
Pickup Lock Arm
Change Arm
Styling Holder
Feed Screw
D
E
Inner Holder
Planet Gear
F
56
DEH-3750MP/XU/GS
1
2
3
4
5
6
7
8
7.1.2 CONNECTOR FUNCTION DESCRIPTION
A
16 14 12 10 8 6 4 2
15 13 11 9 7 5 3 1
10A
B
ANTENNA JACK
REAR OUTPUT
Pin No.
1
2
3
4
5
6
7
8
B.UP
GND
ACC
NC
NC
B.REM
NC
NC
Pin No.
9
10
11
12
13
14
15
16
RLFLRL+
FL+
RRFRRR+
FR+
C
D
E
F
DEH-3750MP/XU/GS
5
6
7
8
57
1
2
3
4
7.2 PARTS
7.2.1 IC
- Pin Functions(PE5460A)
A
Pin No.
1
2, 3
4
5, 6
7
8
9
10
11
12
13
14
15
16
17
18
19, 20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35, 36
37
38
39
40
41
42
43
44, 45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
B
C
D
E
Pin Name
MODEL1
NC
AVSS
NC
AVREF1
KYDT
DPDT
ADPW
TUNPDI
TUNPDO
TUNPCK
PCL
TESTIN
BSI
BDATA
BSCK
NC
swvdd
ILMPW
NC
XRST
brst
XSTB
brxen
CONT
LOEJ
CLCONT
NC
DALMON
VSS
TELIN
ROT0, 1
ROMDATA
ROMCLK
ROMCS
RECEIVE
bsrq
NC
SYSPW
NC
STRKEY2
isens
MUTE
ANTPW
NC
VST
VDT
VCK
NC
TUNPCE2
TUNPCE
RDT
RDSLK
RDS57K
RESET
LDET
RCK
I/O
I
I
O
O
I
O
O
O
I
I
O
I/O
O
O
O
O
O
I/O
O
O
O
O
I
I
O
O
O
I
O
I
I
O
O
O
O
O
O
O
I
I
Function and Operation
Model select input
Not used
GND
Not used
VDD
Display microcomputer data input
Display microcomputer communication data output
A/D converter power supply output
PLL data input
PLL data output
PLL clock output
Clock adjustment output
Test program input
P-BUS serial data input
P-BUS serial data output
P-BUS serial clock input/output
Not used
Display microcomputer chip select output
Illumination power output
Not used
CD LSI reset control output
P-PUS reset signal output
CD LSI strobe output
P-BUS reception enable signal input/output
Driver output
Load/eject output
Driver control output
Not used
Output for dark current reduction circuit
GND
TEL mute input
Rotary volume input 0, 1
ROM collection data output
ROM collection clock output
ROM collection chip select output
RDS decoder receiving output (Not used)
P-BUS serial pole request input
Not used
System power output
Not used
Wired remote control input
Illumination input
System mute output
Auto antenna control output
Not used
E.VOL strobe output
E.VOL data output
E.VOL clock output
Not used
PLL chip enable output 2
PLL chip enable output
RDS LK input (Not used)
RDS clock input (Not used)
RDS 57K input (Not used)
Reset
PLL lock detection input
RDS clock input
F
58
DEH-3750MP/XU/GS
1
2
3
4
5
Pin No.
63
64
65
66
67
68
69, 70
71
72
73
74
75
76
77
78
79
80
6
I
I
I
I
I
* PE5460A
A
B
IC's marked by * are MOS type.
Be careful in handling them because they are very
liable to be damaged by electrostatic induction.
61
80
8
Function and Operation
ACC sense input
Back up sense input
Grille detach sense input
Source sense input
GND
VDD
Crystal oscillator connection pin
GND
Not used
VSS
VDD
VDD
Signal level input
Temperature detection input
VD power supply short circuit input
DISC loading detection input
Wired remote control input
I/O
I
I
I
I
Pin Name
asens
bsens
dsens
source
VSS
VDD
X2, 1
IC(VPP)
NC
VSS
AVDD
AVREF1
SL
TEMP
VDSENS
DISCSENS
STRKEY1
7
60
1
C
20
40
21
41
D
BA33BC0FP
Vref
Vref
+
E
OCP
TSD
1
2
3
OUT
NC
VCC
F
DEH-3750MP/XU/GS
5
6
7
8
59
1
2
3
4
3
4
- Pin Functions(PD6340A)
Pin No.
1-5
6-9
10
11-14
15,16
17
18
19
20
21
22
23
24
25,26
27
28
29-32
33-55
56
57-64
A
B
Pin Name
SEG4-0
COM3-0
VLCD
KST3-0
KDT0,1
REW
DPDT
NC
KYDT
MODA
X0
X1
VSS
KDT2,3
NC
KST4
NC
SEG35-13
VDD
SEG12-5
I/O
O
O
Function and Operation
LCD segment output
LCD common output
LCD drive power supply
Key strobe output
Key data input (analogue input)
Remote control reception input
Display data input
Not used
Key data output
GND
Crystal oscillator connection pin
Crystal oscillator connection pin
GND
Key data input
Not used
Key strobe output
Not used
LCD segment output
Power supply
LCD segment output
O
I
I
I
O
I
O
O
O
* PD6340A
16
1
C
64
17
49
32
33
48
D
N.C.
N.C.
NJM2388F84
5
4
E
1
2
3
VOUT
VDD
GND
Vref
F
60
DEH-3750MP/XU/GS
1
2
5
6
7
8
- Pin Functions(UPD63763GJ)
Pin No.
1
2
3
4-8
9-16
17
18
19
20
21
22
23, 24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39-41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73-88
89-99
Pin Name
D.VDD
D1.GND
reset
AB12-8
AD7-0
cs
ASTB
read
write
wait
INTQ
IFMODE0, 1
D1.VDD
DA.VDD
ROUT
DA.GND
REGC
DA.GND
LOUT
DA.VDD
X.VDD
XTAL
xtal
X.GND
VDDREG15
PWMSW0
TEST3-1
PWMSW1
TESTEN
D1.GND
DIN
DOUT
SCKIN
SCKO
LRCKIN
LRCK
xtalen
D1.VDD
RFCK/HOLD
WFCK/MIRR
PLCK/RFOK
LOCK/RFOK
C1D1/C8M
C1D2/C16M
C2D1/RMUTE
C2D2/LMUTE
C2D3/SHOCK
D1.GND
C33M
(rcs)
RA11
(CKE)
ras
cas)(LDQM)
cas!(UDQM)
we
oe(cas)
D.GND
RDB0-15
RA0-10
I/O
I
I
I/O
I
I
I
I
O
O
I
O
O
I
O
I
I
I
I
I
O
I
O
I
O
I
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I/O
O
Function and Operation
Power supply for digital circuits
GND for 1.6V digital circuits
Input of reset
Address bus 12-8 from the microcomputer
Address/data bus 7-0 to the microcomputer
Chip selection
Address strobe
Control signals(read)
Control signals(write)
Control signals(wait)
Interruption signals to the external microcomputer
Switching the microcomputer I/F 0, 1
Power supply for 1.6V digital circuits
Power supply for DAC
Output of audio for the right channel
GND for DAC
Connected to the capacitor for band gap
GND for DAC
Output of audio for the left channel
Power supply for DAC
Power supply for the crystal oscillator
Connected to the crystal oscillator(16.9344MHz)
Connected to the crystal oscillator(16.9344MHz)
Ground for the crystal oscillator
Control of 1.6V regulator
Setup 0 for PWM output(SD, MD)
Connected to GND
Setup 1 for PWM output(FD, TD)
Connected to GND
GND for 1.6V digital circuits
Input of audio data
Output of audio data
Clock input for audio data
Clock output for audio data
Input of LRCK for audio data
Output LRCK for audio data
Permission to oscillate 16.9344MHz
Power supply for 1.6V digital circuits
Output of RFCK/HOLD signal
Output of WFCK/MIRR signal
Output of PLCK/Output of RFOK
Output of LRCK/Output of RFOK
Information on error correction/C8M : 8MHz
Information on error correction/C16M : 16MHz
Information on error correction/Mute for Rch
Information on error correction/Mute for Lch
Information on error correction/Detection of vibration
GND for 1.6V digital circuits
Output of 33.8688MHz(CLK for SDRAM)
DRAM cs
Output of DRAM address 11
Output of DRAM CKE
Output of DRAM ras
Output of DRAM lower cas(LDQM)
Output of DRAM upper cas(UDQM)
Output of DRAM we
Output of DRAM oe(cas)
Ground for digital circuits
Input/output of DRAM data0-15
Output of DRAM address0-10
A
B
C
D
E
F
DEH-3750MP/XU/GS
5
6
7
8
61
1
2
Pin No.
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120, 121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
A
B
C
D
Pin Name
D.VDD
FD+
FDTD+
TDSD+
SDMD+
MDREFOUTSV
AD.VDD
EFM
ASY
ATEST
RFI
AD.GND
AGCO
C3T
AGCI
RFO
EQ2, 1
RF2RFA.GND
A
C
B
D
F
E
VREFIN
A.VDD
REFOUT
REFC
FEFEO
ADIN
TETEO
TE2
TEC
LD
PD
D.GND
I/O
3
4
Function and Operation
Power supply for digital circuits
Output of focus drive PWM +
Output of focus drive PWM Output of tracking drive PWM +
Output of tracking drive PWM Output of thread drive PWM +
Output of thread drive PWM Output of spindle drive PWM +
Output of spindle drive PWM REFOUT for servo
Power supply for ADC
Output of EFM signals
Input of asymmetry
Analog tests
Input of RF
Ground for the analog system
Output of RF
Connection to the capacitor for detecting 3T
Input of AGC
Output of RF(AGC)
Equalizer 2, 1
Reversal input of RF2
Reversal input of RF
Ground for the analog system
Input of A
Input of C
Input of B
Input of D
Input of F
Input of E
Input of reference voltage
Power supply for the analog system
Output of reference voltage
Connected to the capacitor for output of REFOUT
Reversal input of FE
Output of FE
Input of FE, TE A/D converter
Reversal input of TE
Output of TE
TE2
TEC
Output of LD
Input of PD
Ground for digital circuits
O
O
O
O
O
O
O
O
O
O
I
O
I
O
O
I
O
I
I
I
I
I
I
I
I
I
I
O
I
I
O
I
I
O
O
I
O
I
E
72
144
37
1
36
109
F
62
73
108
* UPD63763GJ
DEH-3750MP/XU/GS
1
2
3
4
5
6
7
8
- Pin Functions(PE5454A)
Pin No.
1
2
3
4
5
6, 7
8
9
10
11
12
13
14
15
Pin Name
AVREF
AVSS
RFOK
NC
EVDD
NC
IC/FLMD0
VDD
REGC
VSS
X1
X2
reset
XT1
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35, 36
37
38
39-42
43
44
45
46
47
48
49
50
51
52
53
54
55
56-58
59
60
61
62
63
64
65
66
XT2
NC
NC
xint
NC
brst
BSI
BSO
bsck
FTXD
FRXD
BRXEN
bsrq
NC
DSCSNS
8EJ(S905)
12EJ(S904)
EVSS
EVDD
SRAMLEVEL0, 1
EMPH
emph
NC
adena
LRCKOK
SRAMLEVEL2
CD3VON
CONT
xrst
VDCONT
ROMDATA
ROMCS
ROMCK
LOEJ
CLCONT
CDMUTE
NC
xcs
NC
xwait
CLKOUT
LOCK
NC
xwrite
NC
I/O
Format
O
C
I
I
I
I
I
I
O
I/O
O
I
I/O
I/O
C
C
/C
C
/C
/C
I
I
I
O
O
O
C
C
C
O
O
O
O
O
O
O
I/O
O
O
O
O
O
C
C
C
C
C
C
C
/C
C
C
C
C
C
O
C
I
O
I
C
O
Function and Operation
A power supply Positive power supply(5V)
A power supply GND
Output of state of RFOK
Not used
E power supply Positive power supply
Not used
IC : VSS direct connection/FLMOD0 : Pull-down
Positive power supply(5V)
Connected to the capacity stabilizing output of the regulator
GND
Oscillator connection for mainclock
Oscillator connection for mainclock
System reset input
Connected to the oscillator for subclock
(connected to VSS via the resistor)
Connected to the oscillator for subclock(Open)
Connected to EVDD or EVSS via the resistor
Not used
CD LSI interruption signal input
Connected to VSS via the resistor
P-Bus reset input
P-Bus serial data input
P-Bus serial data output
P-Bus serial clock input/output
For flash rewriting output(transmitted signal)
For flash rewriting input(received signal)
It is possible to receive P-Bus input/output
P-Bus service request demand input/output
Not used
Disc state sense input
Input of detection of 8 cm disc ejection
Input of detection of 12 cm disc ejection
E power supply GND
E power supply Positive power supply
SRAM level meter output
Emphasis information output
Emphasis information output
Not used
A/D reference voltage supply control output
(DOUT mute output)
SRAM level meter output
CD +3.3V power supply control output
Servo driver power supply control output
CD LSI reset control output
VD power supply control output
E2PROM data input/output
E2PROM chip selection output
E2PROM clock output
The direction change output of LOAD/EJECT
Driver input change output
CD mute control output
Not used
CD LSI chip selection output
Not used
CD LSI write control signal input
Internal system clock output(Open)
Spindle lock input
Not used
CD LSI write control signal output
Not used
DEH-3750MP/XU/GS
5
6
7
8
A
B
C
D
E
F
63
1
Pin No.
67
68
69
70
71-83
84-86
87
88
89-93
94
95
96
97
98
99
100
A
B
2
Pin Name
xread
XASTB
BVSS
BVDD
AD0-12
NC
FMODE
FLRQ
NC
csens
TYPE_A/D
testin
HOME
TEMP
VDSENS
NC
3
I/O
O
O
Format
I/O
/C
I
O
C
I
I
I
I
I
I
4
Function and Operation
CD LSI read control signal output
CD LSI address strobe output
B power supply GND
B power supply Positive power supply
Address/data Bus 0-12
Not used
For flash rewriting Connected to VSS via the resistor
For flash rewriting
Not used
Flap closing sense input
CD-DA analog/digital output change setup
Chip check test program starting input
Home SW sense input
Temperature information sense input
VD power supply short sense input
Not used
* PE5454A
75
51
Format
C
76
50
100
26
Meaning
CMOS
1
25
C
D
NJM2885DL1-33
Thermal
Protection
-+
E
Bandgap
Reference
1
2
3
IN
GND
OUT
F
64
DEH-3750MP/XU/GS
1
2
3
4
5
6
7
8
- FM/AM Tuner Unit
1
NC
NC
NC
18 19 20 21
NC
DO
14
NC
DI
CK
SL
5V
OSC
11
A
IC 3 EEPROM
5.0V
AM ANT
10 9 8
CE1
5
ROM_VDD
CE2
WC
13
IC 5
3.3V
←
7 6
LPF
FMRF
ATT
Rch
3
IC 1
3.3V
FM ANT
ATT
FMRF
ANT adj
24
IC 2
2.5V
Lch
MIXER, IF AMP
23
DET, FM MPX
B
RF adj
T51
CF52
No. Symbol
1 AMANT
2
3
4
5
6
7
RFGND
FMANT
VCC
SL
CE2
WC
AUDIOGND
NC
15
22
16
I/O Explain
I AM antenna input
I
O
I
I
8
9
10
11
12
13
CE1
CK
DI
NC
OSCGND
ROM_VDD
I
I
I
14
15
16
17
18
19
20
21
22
23
24
DO
O
DGND
NC
VDD_3.3
NC
NC
NC
NC
AUDIOGND
L ch
O
R ch
O
4
VDD_3.3
DGND
12
VCC
OSCGND
2
3.3V
IC 4
3.3V 2.5V 2.5V
←
RFGND
CF51
17
AM antenna input high impedance AMANT pin is connected with
an all antenna by way of 4.7µH. (LAU type inductor) A series circuit
including an inductor and a resistor is connected with RF ground for
the countermeasure against the hum of power transmission line.
Ground of antenna block
Input of FM antenna 75Ω Surge absorber(DSP-201M-S00B) is necessary.
The power supply for analog block. D.C 8.4V ± 0.3V
Output of FM/AM signals level
Chip enable for EEPROM ”Low” active
You can write EEPROM, when EEPROM write control is “Low”.
Ordinary non connection
Chip enable for AF•RF ”High” active
Clock
Data input
Not used
Ground of oscillator block
Power supply for EEPROM pin 13 is connected with a power supply of
micro computer.
Data output
Ground of digital block
Not used
The power supply for digital block. 3.3V ± 0.2V
Not used
Not used
Not used
Not used
Ground of audio block
FM stereo “L-ch” signal output or AM audio output
FM stereo “R-ch” signal output or AM audio output
RF ground
FM antenna input
power supply
signal level
chip enable-2
write control
chip enable-1
clock
data in
non connection
osc ground
power supply
data out
digital ground
non connection
power supply
non connection
non connection
non connection
non connection
audio ground
L channel output
R channel output
C
D
E
F
DEH-3750MP/XU/GS
5
6
7
8
65
1
2
3
4
3
4
7.2.2 DISPLAY
- LCD(YAW5027)(DEH-3750MP/XU/GS, DEH-3750MP/XU/CN)
- LCD(YAW5015)(DEH-3770MP/XU/CS)
A
B
C
D
COMMON
SEGMENT
E
F
66
DEH-3750MP/XU/GS
1
2
5
6
7
8
7.3 OPERATIONAL FLOW CHART
A
Power ON
AVREF1, VDD, AVDD=5V
Pin 7, 68, 74, 75
B
bsens
Pin 64
bsens=L
asens
Pin 63
C
asens=L
Starts communication with Grille microcomputer.
300ms
swvdd←L
Pin 21
300ms
D
In case of the above signal, the communication
with Grille microcomputer may fail.
If the time interval is not 300msec, the oscillator
may be defective.
Source keys
operative
Source ON
E
SYSPW←H
Pin 43
Completes power-on operation.(After that, proceed to each source operation.)
F
DEH-3750MP/XU/GS
5
6
7
8
67
1
2
3
4
3
4
7.4 CLEANING
A
Before shipping out the product, be sure to clean the
following portions by using the prescribed cleaning
tools:
Portions to be cleaned
CD pickup lenses
Cleaning tools
Cleaning liquid : GEM1004
Cleaning paper : GED-008
B
C
D
E
F
68
DEH-3750MP/XU/GS
1
2
5
6
7
8
8. OPERATIONS
A
B
C
D
E
F
DEH-3750MP/XU/GS
5
6
7
8
69
1
2
1
2
3
4
3
4
A
B
C
D
E
F
70
DEH-3750MP/XU/GS
5
6
7
8
A
B
C
D
E
F
DEH-3750MP/XU/GS
5
6
7
8
71
1
2
1
2
3
4
3
4
A
B
C
D
E
F
72
DEH-3750MP/XU/GS
5
6
7
8
A
B
C
About the fixing screws for the front panel
If you do not operate the Detaching and Replacing
the Front Panel Function, use the supplied fixing
screws and fix the front panel to this unit.
D
Fixing screw
(CXX1066)
Fixing screw
(CXX1066)
E
F
DEH-3750MP/XU/GS
5
6
7
8
73
74
1
E
2
3
Green/black
Violet/black
≠
≠
With a 2 speaker system, do not
connect anything to the speaker leads
that are not connected to speakers.
Rear speaker
+
Violet
+
Green
Gray/black
≠
White/black
≠
Gray
+
White
≠
+
+
≠
+
System remote control
Rear speaker
Right
Front speaker
Perform these connections when using
the optional amplifier.
Rear speaker
2
Black (ground)
To vehicle (metal) body.
Left
Front speaker
Rear speaker
Blue/white
To system control terminal of the power amp or
Auto-antenna relay control terminal (max. 300 mA
12 V DC).
Fuse
C
Red
To electric terminal controlled by
ignition switch (12 V DC)
ON/OFF.
Yellow
To terminal always supplied with
power regardless of ignition
switch position.
Antenna jack
Power amp
(sold separately)
A
Rear output
This Product
B
Connecting cords with RCA
pin plugs (sold separately)
1
3
4
-
D
F
DEH-3750MP/XU/GS
4
5
6
7
8
A
B
C
D
E
F
DEH-3750MP/XU/GS
5
6
7
8
75
1
2
3
4
- Jigs List
Name
Test Disc
L.P.F.
A
Jig No.
TCD-782
Remarks
Checking
g the g
grating
g
Checking
g the g
grating
g ((Two pieces))
B
C
D
E
F
76
DEH-3750MP/XU/GS
1
2
3
4