deh 2780 2750
TRANSCRIPT
PIONEER CORPORATION 4-1, Meguro 1-chome,PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, LonPIONEER EUROPE NV Haven 1087, Keetberglaan 1, 912PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253
PIONEER CORPORATION 2004
DEH-2750/XU/ES
Meguro-ku, Tokyo 153-8654, Japang Beach, CA 90801-1760, U.S.A.
0 Melsele, BelgiumAlexandra Road, #04-01, Singapore 159936
ORDER NO.
CRT3365
HIGH POWER CD PLAYER WITH FM/AM TUNER
DEH-2750/XU/ES
DEH-2750B/XU/ES
DEH-2750/XU/CN
This service manual should be used together with the following manual(s):
Model No. Order No. Mech.Module Remarks
CX-3110 CRT3178 S10.1 CD Mech. Module : Circuit Description, Mech. Description, Disassembly
For details, refer to "Important Check Points for Good Servicing".
K-ZZA. NOV. 2004 Printed in Japan
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1 2 3 4SAFETY 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 safelyrepair 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 soand refer the repair to a qualified service technician.
1. Safety Precautions for those who Service this Unit.
• When checking or adjusting the emitting power of the laser diode exercise caution in order to get safe, reliable
results.
Caution:
1. During repair or tests, minimum distance of 13cm from the focus lens must be kept.
2. During repair or tests, do not view laser beam for 10 seconds or longer.
2. A “CLASS 1 LASER PRODUCT” label is affixed to the
bottom of the player.
3. The triangular label is attached to the mechanism
unit frame.
4. Specifications of Laser Diode
Specifications of laser radiation fields to which human access is possible during service.Wavelength = 800 nanometers
- Service Precaution1. 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.
DEH-2750/XU/ES21 2 3 4
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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.
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.
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.
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.
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.
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.
3. Lubricants, Glues, and Replacement parts
Use grease and adhesives that are equal to the specified substance. Make sure the proper amount is applied.
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.
DEH-2750/XU/ES 35 6 7 8
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CONTENTS SAFETY INFORMATION..................................................................................................................................... 21. SPECIFICATIONS ............................................................................................................................................ 52. EXPLODED VIEWS AND PARTS LIST ............................................................................................................ 8
2.1 PACKING ................................................................................................................................................... 82.2 EXTERIOR............................................................................................................................................... 102.3 CD MECHANISM MODULE(DEH-2750/XU/ES, DEH-2750B/XU/ES)..................................................... 122.4 CD MECHANISM MODULE(DEH-2750/XU/CN) ..................................................................................... 14
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM.......................................................................................... 163.1 BLOCK DIAGRAM ................................................................................................................................... 163.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE).............................................................................. 183.3 KEYBOARD UNIT.................................................................................................................................... 243.4 CD MECHANISM MODULE..................................................................................................................... 26
4. PCB CONNECTION DIAGRAM ..................................................................................................................... 304.1 TUNER AMP UNIT................................................................................................................................... 304.2 KEYBOARD UNIT.................................................................................................................................... 344.3 CD CORE UNIT(S10) .............................................................................................................................. 36
5. ELECTRICAL PARTS LIST ............................................................................................................................ 386. ADJUSTMENT ............................................................................................................................................... 42
6.1 CD ADJUSTMENT................................................................................................................................... 426.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT .................................................... 446.3 ERROR MODE ........................................................................................................................................ 466.4 SYSTEM MICROCOMPUTER TEST PROGRAM ................................................................................... 47
7. GENERAL INFORMATION............................................................................................................................. 487.1 DIAGNOSIS ............................................................................................................................................. 487.1.1 DISASSEMBLY ..................................................................................................................................... 487.1.2 CONNECTOR FUNCTION DESCRIPTION.......................................................................................... 517.2 PARTS...................................................................................................................................................... 527.2.1 IC .......................................................................................................................................................... 527.2.2 DISPLAY ............................................................................................................................................... 567.3 OPERATIONAL FLOW CHART ............................................................................................................... 577.4 CLEANING............................................................................................................................................... 58
8. OPERATIONS ................................................................................................................................................ 59
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5 6 7 81. SPECIFICATIONS
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DEH-2750/XU/ES61 2 3 4
DEH-2750/XU/ES 7
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1 2 3 42. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
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.)
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11
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1616
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(1) PACKING SECTION PARTS LIST
(2) CONTRAST TABLEDEH-2750/XU/ES, DEH-2750B/XU/ES and DEH-2750/XU/CN are constructed the same except for the following:
Owner's Manual,Installation Manual
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)
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
Mark No. Description Part No.
Mark No. Description DEH-2750/XU/ES DEH-2750B/XU/ES DEH-2750/XU/CN
12 Carton YHG5030 YHG5032 YHG5031
13 Contain Box YHL5030 YHL5032 YHL5031
16-1 Owner's Manual YRD5014 YRD5014 YRB5007
16-2 Installation Manual YRD5018 YRD5018 YRB5009
16-3 Caution Card CRP1310 CRP1310 Not used
* 16-4 Warranty Card Not used Not used ARY7046
Part No. Language
YRD5014 English, Spanish, Portuguese(B), Traditional Chinese, Arabic
YRD5018 English, Spanish, Portuguese(B), Traditional Chinese, Arabic
YRB5007 Casual Chinese
YRB5009 Casual Chinese
DEH-2750/XU/ES 95 6 7 8
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1 2 3 42.2 EXTERIOR
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43
53
42
3536
37
32
3
2
14
5
15
54
4 4
4
7
12
2
34
3941
38
49
40
4847
4650
52
4431
31
1065
66
6160 62
57
64
63
56
5965
6555 5831
31
6
9
8
19
70
29
18
26
212022
25
23
282767
68
17
17
30
45
13
51
16
6869
712
2
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(1) EXTERIOR SECTION PARTS LIST
(2) CONTRAST TABLEDEH-2750/XU/ES, DEH-2750B/XU/ES and DEH-2750/XU/CN are constructed the same except for the following:
Mark No. Description Part No.
1 •••••
2 Screw BSZ26P060FTC
3 Screw BSZ30P060FTC
4 Screw BSZ30P200FTC
5 Cable CDE7113
6 Case CNB2793
7 Holder CNC8659
8 Earth Plate CNC8915
9 Cushion CNM8890
10 Panel See Contrast table(2)
11 •••••
12 CD Mechanism Module(S10) See Contrast table(2)
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) CKS3835
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, PAUSE) YAC5034
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)
Mark No. Description Part No.
Mark No. Description DEH-2750/XU/ES DEH-2750B/XU/ES DEH-2750/XU/CN
10 Panel YNS5045 YNS5045 CNS8046
12 CD Mechanism Module(S10) CXK5601 CXK5601 CXK5604
16 Tuner Amp Unit YWM5051 YWM5055 YWM5053
33 Knob(VOLUME) YAA5002 YAA5002 YAA5001
40 Button(DOWN, RIGHT) YAC5038 YAC5038 YAC5035
41 Button(UP, LEFT) YAC5037 YAC5037 YAC5036
48 LCD(LCD1801) YAW5045 YAW5031 YAW5045
53 Grille Unit YXA5073 YXA5075 YXA5074
71 Sheet Not used Not used CNM9404
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1 2 3 42.3 CD MECHANISM MODULE(DEH-2750/XU/ES, DEH-2750B/XU/ES)
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30P
1956
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1GEM10242GEM10453GEM1035
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CD MECHANISM MODULE(DEH-2750/XU/ES, DEH-2750B/XU/ES) SECTION PARTS LIST
Mark No. Description Part No.
1 CD Core Unit(S10) CWX3110
2 Connector(CN101) CKS4182
3 Connector(CN701) CKS4188
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
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 CNV8391
63 Arm CNV8390
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
Mark No. Description Part No.
DEH-2750/XU/ES 135 6 7 8
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1 2 3 42.4 CD MECHANISM MODULE(DEH-2750/XU/CN)
A
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M
NO
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F
GH
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LM
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B
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13 83
42
68
28
82
4
71
23
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K
38
23
59
87
86
5
13
34
5
5
13
44
5C
52
53
36
4
73
29
51
18
64
76
50
10
72
75
49
77
67
27
78
60
9048
8
17
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6
60
1189
43
70
14
31
65
85
66
85
31
35
14
74
85
1
23
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91
12
33
61
63
21
79
57
58
6280
13
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86
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28
724
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41
20
40
69
39
30P
1956
F
E22
81
15
G
26
5
54
37
55
93
92
10
C
1GEM10242GEM10453GEM1035
1
1
1
1
1
1
1
1
2
2
2
2
1
1
1
1
1
2
2
1
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CD MECHANISM MODULE(DEH-2750/XU/CN) SECTION PARTS LIST
Mark No. Description Part No.
1 CD Core Unit(S10) CWX3110
2 Connector(CN101) CKS4182
3 Connector(CN701) CKS4188
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
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 Unit CXC3865
63 Arm Unit 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
Mark No. Description Part No.
DEH-2750/XU/ES 155 6 7 8
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2
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L
3
SYSTEM
ICP
I/BSI
NT/NC
EJ/NC
CSENS
CONT/BRSQ
SENS
1 2 3 4
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM3.1 BLOCK DIAGRAM
CN701CN101Q101
M
LASERDIODE
MONITORDIODE
HOME
X201
12EJ 8EJ DSCSNS
FOCUS ACT.
SPINDLEMOTOR
MCARRIAGEMOTOR
LOADING/
TRACKING ACT.
LD+
MD
FOP
TOP
14
5
4
1
PICKUP UNIT(P10)(SERVICE)
HOLOGRAM UNIT
IC 301BA5835FP
IC 201UPD63712AGC
IC 701
NJM2391DL1-33
3.3V REGULATOR
SERVO CONTROL,
DSP,LPF, DAC
ACT,MOTORDRIVER
1VD
VD
3R3V
7CONT
5LOEJ
6DSCSNS
8LOUT
TOP
FOP
16SOP
15SOM
17LCOM
18LCOP 22
1
LOEJ
23
20LOUT
XTAL
xtal
24
9CONT
12FOP
FD, TD, SD, MD
AC, F, E, BD
1LD
2PD
42LIMIT
3
13TOP
D CD CORE UNIT(S10)C
2
16SO12 XSI
3R3V
TUN
CDL
CN4011
2
CN721
TUNER AMP UNIT
CD L
A
TUN 3.3V
SYS 8V
VDD
ANTENNA
FM/AM TUNER UNIT
16IC 721TC7SET08FU
29
28
XSI
79DSCSNS
CDLOEJ
CONT
42XS
CO
LO
DS
14
6
16
17
15
B.UP
78
54 3
415
Q991
VDSENS
VD
VD
20
21Q992
FMRF
ANT adjRF adj
FM ANT
T51 CF52CF51
RF
GN
D
OS
CG
ND
DG
ND
AU
DIO
GN
D
NC
VC
C
VD
D_3
.3
3.3V 2.5VIC 4
3.3V 2.5V
←
IC 22.5V
WC
CE
2
RO
M_V
DD SL DI
CK
CE
1
NC
DO
NC
NC
NC
NC
7 6 13 5 10 9 8 11 14 18 19 20 21
1
3
2 12 15 22 16 4 17
IC 13.3V
AM ANT FMRFATT
LPFOSC
IC 3 EEPROM5.0V
IC 55V 3.3V←
ATT
MIXER, IF AMP DET, FM MPX
24
23
Rch
Lch
DEH-2750/XU/ES161 2 3 4
C
D
F
A
B
E
16
29
28
79
78
41
5 6 7 8
11R Lch
IN1-L
IN2-L
2
IC 151PML003AM
ELECTRONIC VOLUME/SOURCE SELECTOR
TUN L
3CDL
10F Lch
IC 1801PD6340A
LCD DRIVER/KEY CONTROLLER
KEY DATA
LCD1801
KEY MATRIX
60
BSENS
ASENS
VDD
B.UP
63
64
48MUTE
21
3
5
FL-
FL+
RL-
RL+
B. REM
ACC
RLIN12
22
4
POWER AMP
REAR OUTPUT
IC 601(1/2)PE5462A
SYSTEM CONTROLLER
IC 601(2/2)PE5462A
IC 961S-80834CNY
IC 302PAL007A
VDD
Q911
Q931
SYSPW
SY
SP
W
VDD
SWVDD
STBYMUTE
3
5
CN1801CN831Q801
KEYBOARD UNIT
VC
K, V
DT
, VS
T
6
7
43SYSPW
Q452
Q453
MUTE
B.UP
Q821
18
20
DPDT
KYDT
MUTE
SYSTEM CONTROLLER
VDD REGULATOR
BACKUP SENSE
ACC SENSE
B
CN901
TUNPCE1
TUNPCE2
TUNPDI
RE
SE
T
TUNPDO
56
55
11
12
TUNPCK13
TUNPDO
TU 3.3V
TUN 3V REG.
IC 921NJM2388F84
B.UP
SYS 8V REG.
TUNPDI
CE1
CE2
TUNPCK
Q912
DALMON32
B.UP
8V
20
4
8
10
9
3
5
6
7
4
8
10
9
SOURCE
VOLUME
LAMP IL1801
SWVDDSWVDD
SRC
DSENS
ILM
ROT1
ROT0
DPDT
KYDT
S1827
SWVDD21
SOURCE66
DSENSE65
ILMPW22
ROT136
ROT035
DPDT9
KYDT8
R Lch
CN352
2
FLIN14
IC 981BA33BC0FP
Q822
DSENSE
SOURCE
SWVDD
BSENS
ASENS
X1
X2
70
X60112.58291MHz69
XO
XI
21
X18015MHz22
Q352
RESET
23
B. REM 25
FL-
FL+
RL-RL+
3
9
11
12
10
1
6
3
9
11
12
10
1
6
2 2
BACK UP
GND
FUSE
10A
ACC
B. REM
XSI/BSI
CONT/NC
LOEJ/NC
DSCSENS
VDCONT/BRSQ
VDSENS
DEH-2750/XU/ES 175 6 7 8
C
D
F
A
B
E
1 2 3 43.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)
A-a A-b
A-a A-b
A-b A-a
Large sizeSCH diagram
Guide page
Detailed page
Note: When ordering service parts, be sure to refer to " EXPLODED VIEWS AND PARTS LIST" or "ELECTRICAL PARTS LIST".
A-a
A
Symbol indicates a resistor.No differentiation is made between chip resistors anddiscrete resistors.
NOTE :
Symbol indicates a capacitor.No differentiation is made between chip capacitors anddiscrete capacitors.
The > mark found on some component parts indicatesthe importance of the safety factor of the part.Therefore, when replacing, be sure to use parts ofidentical designation.
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
BCN1801
C CN701
FM
/AM
TU
NE
R U
NIT
SYSTEM CONTROLLER
ANTENNA
E.VOL.
12.5
8291
MH
z
as
en
s
bs
en
s
ds
en
s
so
ur
ce
sw
vd
d
*Capacitors Code Practical value 103 0.01uF 101/10 100uF/10V
FM:-19.5dBsAM: -30dBs
CD:+0.35dBs
DEH-2750/XU/ES181 2 3 4
C
D
F
A
B
E
A-a A-b
A-a A-b
A-b A-a
VOL.
as
en
s
bs
en
s
5 6 7 8
A-b
A
3300
/16
CE
K12
863A
600µH
>
A TUNER AMP UNIT
CEK120810A
>
REAR L CH
REAR R CHFM: +3.6dBsAM: -6.9dBsCD:+10.45dBs
FM: +29.6dBsAM: +19.1dBsCD:+36.45dBs
DEH-2750/XU/ES 195 6 7 8
C
D
F
A
B
E
SY
ST
EM
CO
NT
RO
LLE
R
1 2 3 4
A-a
A-b
A-a
A-a
A-b 1 2
CC
N70
1
E.V
OL.
12.58291MHz
asens
bsens
dsens
source
FM
:-19
.5dB
sA
M:
-30
dBs
CD
:+0.
35dB
s
DEH-2750/XU/ES201 2 3 4
C
D
F
A
B
E
ens
ens
ens
rce
FM
:-19
.5dB
sA
M:
-30
dBs
5 6 7 8
A-a
A-b
A-a
A-a
A-b3
Sym
bol i
ndic
ates
a r
esis
tor.
No
diffe
rent
iatio
n is
mad
e b
etw
een
chip
res
isto
rs a
nddi
scre
te r
esis
tors
.
NO
TE
: Sym
bol i
ndic
ates
a c
apac
itor.
No
diffe
rent
iatio
n is
mad
e b
etw
een
chip
cap
acito
rs a
nddi
scre
te c
apac
itors
.
The
> m
ark
foun
d on
som
e co
mpo
nent
par
ts in
dica
tes
the
impo
rtan
ce o
f the
saf
ety
fact
or o
f the
par
t.T
here
fore
, whe
n re
plac
ing,
be
sure
to u
se p
arts
of
iden
tical
des
igna
tion.
For
res
isto
rs a
nd c
apac
itors
in th
e ci
rcui
t dia
gram
s,
thei
r re
sist
ance
val
ues
or c
apac
itanc
e va
lues
are
exp
ress
ed in
cod
es:
Ex.
*R
esis
tors
C
ode
Pra
ctic
al v
alue
1
23
12k
ohm
s
103
1
0k o
hms
BC
N18
01
FM/AM TUNER UNITS
YS
TE
M C
ON
TR
OLL
ER
AN
TE
NN
A
as
bs
ds
sou
swvdd
*C
apac
itors
C
ode
P
ract
ical
val
ue
103
0.
01uF
1
01/1
0
100u
F/1
0V
DEH-2750/XU/ES 215 6 7 8
C
D
F
A
B
E
1 2 3 4
A-a
A-b
A-b 1 2
3300/16
CEK12863A
>
AT
UN
ER
AM
P U
NIT
RE
AR
L C
H
RE
AR
R C
H
L.
FM
: +
3.6d
Bs
AM
:
-6.9
dBs
CD
:+10
.45d
Bs
FM
: +2
9.6d
Bs
AM
: +1
9.1d
Bs
CD
:+36
.45d
Bs
DEH-2750/XU/ES221 2 3 4
C
D
F
A
B
E
5 6 7 8
A-a
A-b
A-b3
600µ
H
CE
K12
0810
A >
DEH-2750/XU/ES 235 6 7 8
C
D
F
A
B
E
1 2 3 43.3 KEYBOARD UNIT
B
A,C : YAW5045 B : YAW5031
5MHz
DEH-2750/XU/ES241 2 3 4
C
D
F
A
B
E
5 6 7 8
B
40mA,14V
DEH-2750/XU/ESDEH-2750B/XU/ESDEH-2750/XU/CN
ABC
model
A,C
: S
ML-
310P
T
B :
SM
L-31
0VT
A,C : CEL1651(GREEN) B : CEL1662(VW RED)
A,C : 151 B : 221
A,C : 181 B : 331
A,C : 151 B : 331
AC
N83
1
B KEYBOARD UNIT
DEH-2750/XU/ES 255 6 7 8
C
D
F
A
B
E
3
1 2 3 4
3.4 CD MECHANISM MODULE
C
PICKUP UNIT(P10)(SERVICE)
M1CXC4440
SPINDLE MOTOR
M2CXB8933
LOADING/CARRIAGE MOTOR
3.3VREGULATOR
MOTOR DRIVER
F F
F F
T T
T T
F
F
T
T
T
F
S
C
F
F
T
T
S S C C
S
S
C
C
T
T
F
F
T
T
F
F
1
7
8
6
5
@
9
0
!
#
DEH-2750/XU/ES261 2 3 4
C
D
F
A
B
E
C C
6
5
@
5 6 7 8
C
7.5V
7.5V
SWITCHES:CD CORE UNIT(S10) S901:HOME SWITCH..........ON-OFF S903:DSCSNS SWITCH......ON-OFF S904:12EJ SWITCH.............ON-OFF S905:8EJ SWITCH...............ON-OFF
The underlined indicates the switch position.
CD CORE UNIT(S10)CA
CN721
RF AMP / SERVO / DSPDAC / LPF F
SIGNAL LINE
FOCUS SERVO LINE
TRACKING SERVO LINE
CARRIAGE SERVO LINE
SPINDLE SERVO LINE
T
C
S
S C T F
3
$%
4
2
9
DEH-2750/XU/ES 275 6 7 8
C
D
F
A
B
E
1 2 3 4
- Waveforms Note : 1. The encircled numbers denote measuring points in the circuit diagram.2. Reference voltage REFO1(1.65V)
1 DSCSNS2 CLCONT3 LOEJ4 VD
5V/div5V/div5V/div10V/div
500ms/div
When loading a 12cm CD
Ref.:GND
Mode:Normal
5 SIN6 CIN7 TIN
1V/div500mV/div500mV/div
2s/div
When setting up after loading a 12cm CD-DA disc
Ref.:REFO
Mode:Normal
1 DSCSNS2 CLCONT3 LOEJ4 VD
5V/div5V/div5V/div10V/div
500ms/div
When loading an 8cm CD
Ref.:GND
Mode:Normal
@ MDX5 SIN
500mV/div1V/div
5ms/div
Spindle waveform during "Play"
Ref.:REFO
Mode:Normal
# RFAGC 500mV/div 0.5µs/div
Ref.:REFO
Mode:Normal
@ MDX5 SIN
500mV/div1V/div
5µs/div
Spindle waveform during "Play"(Magnified) RF eye pattern
Ref.:REFO
Mode:Normal
8 FIN! FE
500mV/div500mV/div
200ms/div
Focus Search
Ref.:REFO
Mode:TEST
# RFAGC0 TE7 TIN
1V/div500mV/div500mV/div
500µs/div
Ref.:REFO
Mode:TEST
0 TE# RFAGC
500mV/div500mV/div
2ms/div
When "Tracking Open" 1 Track Jump
Ref.:REFO
Mode:TEST
8 FIN9 RFOK5 SIN
200mV/div2V/div2V/div
500ms/div
When setting up "Source On"(12cm CD-DA) During "Play"(CD-DA)
Ref.:REFO
Mode:Normal
! FE8 FIN0 TE7 TIN
500mV/div500mV/div500mV/div500mV/div
20ms/div
Ref.:REFO
Mode:Normal
0 TE! FE
500mV/div500mV/div
200ms/div
When setting up "Source On"
Ref.:REFO
Mode:Normal
DEH-2750/XU/ES281 2 3 4
C
D
F
A
B
E
5 6 7 8
# RFAGC0 TE7 TIN
1V/div500mV/div500mV/div
500ms/div
32 Track Jump
Ref.:REFO
Mode:TEST
# RFAGC7 TIN0 TE8 FIN
1V/div1V/div1V/div1V/div
500µs/div
Ref.:REFO
Mode:Normal
# RFAGC0 TE7 TIN
1V/div500mV/div500mV/div
5ms/div
100(32x3) Track Jump When reproducing black dots(1mm)
Ref.:REFO
Mode:TEST
$ LOUT% ROUT
1V/div1V/div
200µs/div
Analog Audio
Ref.:AGND
Mode:Normal
1 DSCSNS2 CLCONT3 LOEJ
5V/div5V/div5V/div
200ms/div
Ref.:GND
Mode:Normal
1 DSCSNS2 CLCONT3 LOEJ
5V/div5V/div5V/div
200ms/div
When "Eject"(12cm CD) When "Eject"(8cm CD)
Ref.:GND
Mode:Normal
# RFAGC0 TE6 CIN5 SIN
1V/div1V/div500mV/div2V/div
500µs/div
When reproducing scratch(1mm)During inside/outside search(outer circumference → inner circumference)
Ref.:REFO
Mode:Normal
# RFAGC0 TE6 CIN5 SIN
1V/div1V/div500mV/div2V/div
500µs/div
Ref.:REFO
Mode:Normal
# RFAGC0 TE6 CIN5 SIN
1V/div1V/div500mV/div2V/div
5ms/div
When reproducing fingerprint(65µm)
Ref.:REFO
Mode:Normal
DEH-2750/XU/ES 295 6 7 8
C
D
F
A
B
E
1 2 3 44. PCB CONNECTION DIAGRAM4.1 TUNER AMP UNIT
CapacitorConnector
P.C.Board Chip Part
A
A TUNER AMP UNIT
SIDE B
SIDE A
NOTE FOR PCB DIAGRAMS1.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 dia- gram.2.Viewpoint of PCB diagrams
C CN701
CORD ASSY
1
1
2
3 2
3
4
5
6
7
8
11
12
13
14
15
16
9
10
DEH-2750/XU/ES301 2 3 4
C
D
F
A
B
E
SSY
11
12
13
140
5 6 7 8
A
SIDE A
B CN1801
FRONT
RCAANTENNA
FM
/AM
TU
NE
R U
NIT
15 1
1
2
42 3
16
DEH-2750/XU/ES 315 6 7 8
C
D
F
A
B
E
CL
1 2 3 4
A
A TUNER AMP UNIT
1
1
P
TEST
DEH-2750/XU/ES321 2 3 4
C
D
F
A
B
E
EST
5 6 7 8
A
SIDE B
1
PCL
1
DEH-2750/XU/ES 335 6 7 8
C
D
F
A
B
E
1 2 3 44.2 KEYBOARD UNIT
B
B KEYBOARD UNIT SIDE A
CLO
CK
EQ
VO
LUM
E
SO
UR
CE
12
BA
ND
43
6
LOC
AL/
BS
M
5D
OW
N
LOU
DN
ES
S
PA
US
E
RIG
HT
LEF
T
AU
DIO
EJE
CT
UP
LCD1801
DEH-2750/XU/ES341 2 3 4
C
D
F
A
B
E
5 6 7 8
B
B KEYBOARD UNIT SIDE B
A CN831
DEH-2750/XU/ES 355 6 7 8
C
D
F
A
B
E
1 2 3 4
4.3 CD CORE UNIT(S10)
C
C CD CORE UNIT(S10) SIDE A
ACN721
PIC
KU
P U
NIT
(P10
)(S
ER
VIC
E)
M2LOADING
/CARRIAGEMOTOR
M1SPINDLEMOTOR
E
REFO1
F
HOME
DEH-2750/XU/ES361 2 3 4
C
D
F
A
B
E
5 6 7 8
C
C CD CORE UNIT(S10) SIDE B
12EJ8EJ
DSCSNS
3 2 1
DEH-2750/XU/ES 375 6 7 8
C
D
F
A
B
E
1 2 3 4
5. ELECTRICAL PARTS LIST
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. Part No.
AUnit Number:YWM5051(DEH-2750/XU/ES)Unit Number:YWM5055(DEH-2750B/XU/ES)Unit Number:YWM5053(DEH-2750/XU/CN)Unit Name:Tuner Amp Unit
MISCELLANEOUS
IC 151 (B,132,80) IC PML003AMIC 302 (A,93,132) IC PAL007AIC 601 (B,85,52) IC PE5462AIC 721 (B,45,20) IC TC7SET08FUIC 921 (A,6,119) IC NJM2388F84
IC 961 (A,46,62) IC S-80834CNYIC 981 (B,146,27) IC BA33BC0FPQ 352 (B,159,125) Transistor IMH3AQ 452 (B,140,115) Transistor DTC124EUQ 453 (B,135,107) Transistor DTA124EU
Q 801 (B,28,25) Transistor 2SA1036KQ 821 (B,20,29) Transistor 2SA1036KQ 822 (B,17,33) Transistor DTC114EUQ 911 (A,6,100) Transistor 2SD2396Q 912 (B,17,64) Transistor IMD2A
Q 931 (B,70,86) Transistor IMX1Q 991 (A,6,66) Transistor 2SD2396Q 992 (B,25,50) Transistor IMD2AD 831 (A,139,18) Diode 1SS133D 832 (A,122,23) Diode 1SS133
D 833 (A,114,24) Diode 1SS133D 834 (A,111,19) Diode 1SS133D 835 (A,113,10) Diode 1SS133D 836 (A,126,25) Diode 1SS133D 837 (A,134,21) Diode 1SS133
D 838 (A,119,18) Diode 1SS133D 839 (A,117,18) Diode 1SS133D 840 (A,118,15) Diode 1SS133D 841 (A,116,15) Diode 1SS133D 842 (A,130,25) Diode 1SS133
D 901 (A,69,113) Diode S5688GD 902 (A,72,110) Diode S5688GD 911 (A,30,78) Diode S5688GD 912 (A,18,60) Diode HZS6L(B2)D 931 (A,55,93) Diode HZS7L(C3)
D 932 (A,60,91) Diode HZS7L(A1)D 971 (A,60,104) Diode S5688GD 972 (A,57,104) Diode S5688GD 991 (A,13,48) Diode HZS7L(C3)L 151 (A,141,79) Inductor LAU2R2K
L 401 (A,155,55) Inductor LAU1R0KL 402 (A,155,92) Inductor LAU1R0KL 404 (A,155,99) Ferri-Inductor LAU4R7KL 601 (A,64,64) Ferri-Inductor LAU100KL 801 (A,28,15) Inductor LAU2R2K
L 901 (A,35,103) Choke Coil 600µH CTH1280X 601 (A,101,61) Radiator 12.58291MHz CSS1402>FU352 (B,140,136) Fuse 3A CEK1286AR401 (A,159,119) Surge Protector DSP-201M-S00BZ 401 (A,163,100) FM/AM Tuner Unit CWE1646
> Fuse 10A CEK1208
RESISTORS
R 153 (B,127,104) RS1/16S471JR 154 (B,147,93) RS1/16S471JR 155 (B,127,102) RS1/16S471JR 156 (B,136,94) RS1/16S471JR 157 (B,84,79) RAB4C102J
R 301 (A,100,96) RD1/4PU153JR 353 (B,141,122) RS1/16S471JR 354 (B,163,125) RS1/16S471JR 357 (B,145,130) RS1/16S223JR 358 (B,160,134) RS1/16S223J
R 405 (B,158,62) RS1/16S681JR 407 (B,159,83) RS1/16S681JR 408 (B,159,85) RS1/16S681JR 409 (B,159,86) RS1/16S681JR 410 (B,159,88) RS1/16S681J
R 414 (B,156,88) RS1/16S0R0JR 420 (B,105,44) RS1/16S681JR 421 (B,159,79) RS1/16S473JR 454 (B,133,114) RS1/16S103JR 455 (B,141,132) RS1/16S153J
R 456 (B,139,132) RS1/16S221JR 457 (A,120,54) RD1/4PU681JR 601 (B,102,49) RS1/16S473JR 602 (B,102,51) RS1/16S473JR 603 (B,63,75) RS1/16S103J
R 604 (B,60,75) RS1/16S103JR 605 (B,84,21) RS1/16S0R0JR 606 (B,110,41) RS1/16S104J
Circuit Symbol and No. Part No.
DEH-2750/XU/ES381 2 3 4
C
D
F
A
B
E
5 6 7 8
R 607 (A,110,51) RD1/4PU222JR 608 (B,104,63) RS1/16S0R0J
R 609 (A,102,47) RD1/4PU473JR 610 (A,129,44) RD1/4PU681JR 611 (B,105,50) RS1/16S473JR 612 (B,111,14) RS1/16S104JR 613 (B,107,24) RS1/16S473J
R 633 (B,65,40) RS1/16S104JR 721 (B,80,23) RS1/16S221JR 729 (B,54,57) RS1/16S0R0JR 730 (A,74,38) RD1/4PU102JR 731 (A,77,33) RD1/4PU102J
R 732 (B,110,43) RS1/16S0R0JR 733 (A,80,33) RD1/4PU102JR 736 (A,98,34) RD1/4PU221JR 737 (B,56,24) RS1/16S221JR 738 (B,94,38) RS1/16S221J
R 741 (B,50,17) RS1/16S221JR 751 (B,55,21) RS1/16S0R0JR 801 (B,24,27) RS1/16S153JR 802 (B,28,20) RS1/16S153JR 803 (B,13,36) RS1/16S222J
R 821 (B,22,33) RS1/16S222JR 823 (B,26,31) RS1/16S103JR 833 (B,105,16) RS1/16S222JR 834 (B,88,15) RS1/16S222JR 836 (B,131,21) RS1/16S104J
R 837 (A,128,21) RD1/4PU103JR 838 (A,113,44) RD1/4PU102JR 841 (B,15,28) RS1/16S1R0JR 848 (A,100,41) RD1/4PU102JR 851 (A,97,41) RD1/4PU102J
R 852 (B,112,17) RS1/16S102JR 853 (B,107,22) RS1/16S102JR 854 (B,105,14) RS1/16S222JR 855 (B,103,20) RS1/16S222JR 857 (B,104,18) RS1/16S222J
R 858 (A,127,27) RD1/4PU102JR 911 (B,11,68) RS1/16S223JR 912 (A,14,68) RD1/4PU152JR 923 (B,10,110) RS1/16S473JR 931 (B,62,92) RS1/16S473J
R 932 (B,65,85) RS1/16S104JR 933 (A,54,99) RD1/4PU102JR 934 (B,64,95) RS1/16S473JR 935 (B,64,92) RS1/16S473JR 936 (B,70,89) RS1/16S473J
R 940 (B,66,74) RS1/16S104JR 941 (B,66,72) RS1/16S104JR 955 (B,42,76) RS1/16S473JR 961 (B,59,68) RS1/16S102JR 962 (B,45,66) RS1/16S822J
R 981 (A,136,38) RD1/4PU1R8JR 991 (A,13,53) RD1/4PU271JR 992 (A,18,50) RD1/4PU121JR 993 (B,30,62) RS1/16S272JR 994 (B,30,56) RS1/16S472J
CAPACITORS
Circuit Symbol and No. Part No.C 151 (B,159,71) CKSRYB224K16C 152 (B,159,73) CKSRYB224K16C 153 (B,122,74) CKSRYB105K10C 154 (B,145,82) CKSRYB105K10C 155 (A,121,78) CEJQ4R7M35
C 156 (A,143,88) CEJQ4R7M35C 157 (B,123,85) CKSRYB153K50C 158 (B,143,95) CKSRYB153K50C 161 (B,125,99) CCSRCH100D50C 162 (B,139,94) CCSRCH100D50
C 163 (B,131,95) CCSRCH100D50C 164 (B,139,96) CCSRCH100D50C 165 (B,140,70) CKSRYB104K16C 166 (A,135,66) CEJQ470M10C 167 (A,124,66) CEJQ100M16
C 301 (A,135,111) CFTNA224J50C 302 (A,145,119) CFTNA224J50C 303 (A,130,111) CFTNA224J50C 304 (A,143,125) CFTNA224J50C 309 (B,135,136) CKSQYB225K10
C 310 (B,122,143) CKSQYB225K10C 312 (A,100,118) CEJQ100M16C 313 (B,40,122) CKSRYB104K16C 353 (A,132,102) CEJQ2R2M50C 354 (A,140,102) CEJQ2R2M50
C 401 (B,164,67) CKSRYB103K50C 402 (B,153,56) CKSRYB103K50C 403 (A,150,53) CEJQ470M6R3C 404 (A,153,87) CEJQ101M10C 405 (B,166,94) CKSRYB104K25
C 420 (B,112,68) CCSRCH470J50C 451 (A,134,131) CEJQ330M10C 601 (B,54,64) CKSRYB104K25C 604 (B,97,64) CCSRCH200J50C 605 (B,101,64) CCSRCH200J50
C 610 (A,94,71) CEJQ4R7M35C 611 (B,97,68) CKSRYB224K16C 728 (B,42,19) CKSRYB104K16C 801 (B,11,36) CKSRYB104K16C 901 (A,46,121) 3300µF/16V CCH1494
C 911 (A,16,76) CEJQ470M10C 912 (B,12,64) CKSRYB103K50C 913 (A,25,86) 470µF/16V CCH1331C 921 (A,14,115) CEJQ101M16C 922 (A,18,107) CEJQ221M10
C 923 (B,18,110) CKSRYB103K50C 924 (B,17,101) CKSRYB103K50C 961 (B,50,66) CKSRYB473K50C 963 (A,46,69) CEJQ100M16C 982 (B,145,40) CKSRYB103K50
C 983 (A,147,35) CEJQ220M16C 991 (B,20,50) CKSRYB473K50C 992 (A,26,60) CEJQ101M16
BUnit Number:(DEH-2750/XU/ES)Unit Number:(DEH-2750/XU/CN)Unit Name:Keyboard Unit
Circuit Symbol and No. Part No.
DEH-2750/XU/ES 395 6 7 8
C
D
F
A
B
E
1 2 3 4
MISCELLANEOUS
IC 1801 (B,29,96) IC PD6340AD 1801 (B,19,40) Diode MA152WKD 1802 (B,24,40) Diode MA152WAD 1803 (A,25,38) LED CL-490S-WF-SDD 1804 (A,25,128) LED CL-490S-WF-SD
D 1805 (A,13,22) LED SML-310PTD 1806 (A,26,9) LED SML-310PTD 1807 (A,30,27) LED SML-310PTD 1808 (A,39,50) LED SML-310PTD 1809 (A,5,10) LED SML-310PT
D 1810 (A,34,9) LED SML-310PTD 1811 (A,39,84) LED SML-310PTD 1812 (A,39,73) LED SML-310PTD 1813 (A,39,61) LED SML-310PTD 1814 (A,39,96) LED SML-310PT
D 1815 (A,39,107) LED SML-310PTD 1816 (A,39,119) LED SML-310PTD 1817 (A,39,35) LED SML-310PTD 1818 (A,39,131) LED SML-310PTX 1801 (B,37,83) Ceramic Resonator 5.00MHz CSS1547
S 1827 (A,23,19) Switch(VOLUME) YSD5002IL 1801 (B,23,147) Lamp 40mA,14V CEL1651LCD1801 (A,16,45) LCD YAW5045
RESISTORS
R 1801 (B,23,43) RS1/16S222JR 1802 (B,20,43) RS1/16S222JR 1803 (B,22,33) RS1/16S151JR 1804 (B,22,31) RS1/16S181JR 1805 (B,19,34) RS1/16S181J
R 1806 (B,29,142) RS1/16S181JR 1807 (B,26,142) RS1/16S181JR 1808 (B,13,31) RS1/16S181JR 1809 (B,24,33) RS1/16S151JR 1810 (B,25,30) RS1/16S181J
R 1811 (B,21,35) RS1/16S181JR 1812 (B,29,140) RS1/16S181JR 1813 (B,26,140) RS1/16S181JR 1814 (B,15,31) RS1/16S181JR 1815 (B,25,33) RS1/16S151J
R 1816 (B,25,29) RS1/16S151JR 1817 (B,22,35) RS1/16S151JR 1818 (B,29,137) RS1/16S151JR 1819 (B,26,137) RS1/16S151JR 1820 (B,17,31) RS1/16S151J
R 1821 (B,27,25) RS1/16S151JR 1831 (B,33,23) RS1/16S472JR 1832 (B,35,23) RS1/16S472JR 1834 (B,14,21) RS1/16S473J
CAPACITORS
C 1802 (B,27,52) CKSRYF104Z25C 1811 (A,25,32) CKSRYF104Z25C 1812 (A,20,129) CKSRYF104Z25
BUnit Number:(DEH-2750B/XU/ES)
Circuit Symbol and No. Part No.
Unit Name:Keyboard Unit
MISCELLANEOUS
IC 1801 (B,29,96) IC PD6340AD 1801 (B,19,40) Diode MA152WKD 1802 (B,24,40) Diode MA152WAD 1803 (A,25,38) LED CL-490S-WF-SDD 1804 (A,25,128) LED CL-490S-WF-SD
D 1805 (A,13,22) LED SML-310VTD 1806 (A,26,9) LED SML-310VTD 1807 (A,30,27) LED SML-310VTD 1808 (A,39,50) LED SML-310VTD 1809 (A,5,10) LED SML-310VT
D 1810 (A,34,9) LED SML-310VTD 1811 (A,39,84) LED SML-310VTD 1812 (A,39,73) LED SML-310VTD 1813 (A,39,61) LED SML-310VTD 1814 (A,39,96) LED SML-310VT
D 1815 (A,39,107) LED SML-310VTD 1816 (A,39,119) LED SML-310VTD 1817 (A,39,35) LED SML-310VTD 1818 (A,39,131) LED SML-310VTX 1801 (B,37,83) Ceramic Resonator 5.00MHz CSS1547
S 1827 (A,23,19) Switch(VOLUME) YSD5002IL 1801 (B,23,147) Lamp 40mA,14V CEL1662LCD1801 (A,16,45) LCD YAW5031
RESISTORS
R 1801 (B,23,43) RS1/16S222JR 1802 (B,20,43) RS1/16S222JR 1803 (B,22,33) RS1/16S151JR 1804 (B,22,31) RS1/16S331JR 1805 (B,19,34) RS1/16S331J
R 1806 (B,29,142) RS1/16S331JR 1807 (B,26,142) RS1/16S331JR 1808 (B,13,31) RS1/16S331JR 1809 (B,24,33) RS1/16S151JR 1810 (B,25,30) RS1/16S331J
R 1811 (B,21,35) RS1/16S331JR 1812 (B,29,140) RS1/16S331JR 1813 (B,26,140) RS1/16S331JR 1814 (B,15,31) RS1/16S331JR 1815 (B,25,33) RS1/16S151J
R 1816 (B,25,29) RS1/16S331JR 1817 (B,22,35) RS1/16S331JR 1818 (B,29,137) RS1/16S331JR 1819 (B,26,137) RS1/16S331JR 1820 (B,17,31) RS1/16S331J
R 1821 (B,27,25) RS1/16S221JR 1831 (B,33,23) RS1/16S472JR 1832 (B,35,23) RS1/16S472JR 1834 (B,14,21) RS1/16S473J
CAPACITORS
C 1802 (B,27,52) CKSRYF104Z25C 1811 (A,25,32) CKSRYF104Z25C 1812 (A,20,129) CKSRYF104Z25
C
Circuit Symbol and No. Part No.
DEH-2750/XU/ES401 2 3 4
C
D
F
A
B
E
5 6 7 8
Unit Number:CWX3110Unit Name:CD Core Unit(S10)
MISCELLANEOUS
IC 201 (A,35,25) IC UPD63712AGCIC 301 (A,45,81) IC BA5835FPIC 701 (B,53,56) IC NJM2885DL1-33Q 101 (B,22,12) Transistor 2SA1577X 201 (A,45,36) Ceramic Resonator 16.934MHz CSS1603
S 901 (A,15,44) Switch(HOME) CSN1067S 903 (B,53,101) Switch(DSCSNS) CSN1068S 904 (B,35,109) Switch(12EJ) CSN1067S 905 (B,48,110) Switch(8EJ) CSN1067
RESISTORS
R 101 (B,26,13) RS1/10SR2R4JR 102 (B,28,15) RS1/10SR2R4JR 103 (B,29,12) RS1/10SR2R7JR 201 (A,58,26) RS1/16SS102JR 214 (A,23,28) RS1/16SS332J
R 215 (A,21,27) RS1/16SS183JR 216 (A,24,19) RS1/16SS122JR 217 (A,22,15) RS1/16SS562JR 218 (A,24,16) RS1/16SS472JR 235 (A,27,44) RS1/16SS103J
R 236 (A,31,46) RS1/16SS103JR 301 (A,54,73) RS1/16SS183JR 302 (A,54,70) RS1/16SS822JR 303 (A,45,70) RS1/16SS183JR 304 (A,47,69) RS1/16SS822J
R 305 (A,34,75) RS1/16SS183JR 306 (A,32,69) RS1/16SS183JR 307 (A,38,74) RS1/16SS183JR 308 (A,36,67) RS1/16SS183JR 601 (B,52,43) RS1/16SS101J
R 602 (B,46,42) RS1/16SS101JR 603 (B,48,48) RS1/16SS0R0JR 901 (B,48,103) RS1/16SS104JR 902 (B,46,105) RS1/16SS473JR 903 (B,44,106) RS1/16SS273J
CAPACITORS
C 103 (B,13,8) 100µF/16V CCH1504C 109 (A,34,12) CKSSYB104K10C 201 (A,45,19) CKSSYB104K10C 202 (A,53,21) CKSSYB102K50C 205 (B,37,36) 22µF/6.3V CCH1507
C 206 (B,40,30) CKSSYB103K16C 207 (A,46,30) CKSSYB104K10C 209 (A,46,31) CKSSYB104K10C 210 (A,41,35) CKSSYB104K10C 211 (A,33,35) CKSSYB104K10
C 213 (A,21,29) CKSSYB103K16C 214 (A,23,26) CKSSYB104K10C 215 (A,25,23) CKSSYB104K10C 216 (A,24,21) CKSSYB103K16C 217 (A,21,18) CCSSCH560J50
C 218 (A,24,14) CCSSCH5R0C50C 219 (A,28,14) CKSSYB104K10
Circuit Symbol and No. Part No.C 220 (B,27,24) CKSSYB104K10C 221 (B,41,21) CKSSYB104K10C 222 (A,35,12) CKSSYB103K16
C 223 (A,37,14) CCSSCH680J50C 224 (A,45,11) CCSSCH470J50C 225 (A,46,14) CKSSYB103K16C 231 (A,30,43) CKSSYB102K50C 232 (B,38,64) CKSSYB102K50
C 301 (B,37,74) 100µF/16V CCH1504C 302 (A,54,71) CKSSYB221K50C 303 (A,45,68) CKSSYB221K50C 304 (A,33,73) CKSSYB472K25C 305 (A,36,74) CKSSYB103K16
C 306 (B,45,94) CKSSYB104K10C 501 (B,45,51) CKSSYB103K16C 502 (A,61,68) CKSSYB103K16C 703 (B,47,61) CKSQYB104K16C 704 (B,54,63) CKSQYB105K10
Miscellaneous Parts List
Pickup Unit(P10)(Service) CXX1647M 1 Motor Unit(SPINDLE) CXC4440M 2 Motor Unit(LOADING/CARRIAGE) CXB8933
Circuit Symbol and No. Part No.
DEH-2750/XU/ES 415 6 7 8
C
D
F
A
B
E
1 2 3 4
6. ADJUSTMENT6.1 CD ADJUSTMENT
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.
• 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.
• 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.
2) Test modeThis 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.
DEH-2750/XU/ES421 2 3 4
C
D
F
A
B
E
5 6 7 8
[BAND]
[BAND]
[BAND]
[BAND]
[BAND]
Power On(T.Offset is adjusted)
TRK00 MIN00 SEC00
[CD]or[SOURCE]
Source On
TRK MIN
[4]+[6]+Reset
Test Mode In
[3]
[1]
[1]
Power On(T.Offset is not adjusted)
TRK99 MIN99 SEC99
[2]
[2]
[2]
[2]
Power Off
TRK MIN SEC
Power Off
TRK MIN SEC
Power Off
TRK MIN SEC
Power Off
TRK MIN SEC
Focus Close /S curve check
TRK91 MIN91 SEC91
[6] [1]
[3]
[6]
[3]
Focus Mode switching
*2
TRK0xMIN0xSEC0x
Tracking ServoClose
TRK00 MIN00 SEC00or TRK99 MIN99 SEC99
CRG- *8
TRK00 MIN00 SEC00or TRK99 MIN99 SEC99
[→] [←]
[→] [←]
[→] [←]
CRG+ *8
TRK00 MIN00 SEC00or TRK99 MIN99 SEC99
Automatic adjustment display switching
*3
TRK?? MIN?? SEC??
T.Close and F,T AGCand RF AGC
Applicable servomechanismTRKxx MINxx SECxx
[6]
[3]
T.Close andApplicable servomechanism
TRKxx MINxx SECxx
RF AGC /RF AGC coefficient display
TRK?? MIN?? SEC??
CRG+
TRK8x MIN8x SEC8xor TRK9xMIN9xSEC9x
CRG-
TRK8xMIN8xSEC8xor TRK9xMIN9xSEC9x
T.Balance adjustmentT.Balance coefficient display
TRK?? MIN?? SEC??
F,T,RF AGC /F.Bias display switching
*7
TRK?? MIN?? SEC??
F,T AGC /F.BiasRF AGC
TRKxx MINxx SECxx
CRG/TR Jump value *5
switching
TRKxx MINxx SECxx
CRG/TR Jump +*4
TRK xx MINxx SEC xx
CRG/TR Jump - *4
*6
TRK xx MIN xx SEC xx
Tracking Open
TRK8xMIN8xSEC8xor TRK 9xMIN9xSEC 9x
Tracking Open
TRK8x MIN8x SEC8xor TRK9xMIN9xSEC9x
[Key]
[BAND]
[→]
[6]
[1]
[2]
[3]
-
-
Power On / Off
CRG + / TR Jump + (Direction of the external surface)
CRG - / TR Jump - (Direction of the internal surface)
CLS and AGC and Applicable servomechanism /AGC, AGC display switching
RF Gain switching / Offset adjustment display /T.Balance adjustment / T.Open
Close, S.Curve /
SPDL 1X / 2X switching(Double-speed compatibility only)
Gop measurement
Forcus Mode switching / Tracking Close/ CRG, TR Jump switching
Test Mode
Operation
[KEY]
Contents
Display
Rough Servo and RF AGC / F, T, RF AGC
*1) TYP → -12dB TRK MIN SEC TRK 12 MIN 12 SEC 12
*2) Focus Close → S.Curve → F EQ measurement setting TRK 00 MIN 00 SEC 00 TRK 01 MIN 01 SEC 01 TRK 02 MIN 02 SEC 02 (TRK 99 MIN 99 SEC 99)
*3) F.Offset Display → RF.Offset Display → T.Offset 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 or 100TR Jump*7) TRK/MIN/SEC → F.AGC → T.AGC Gain → F.bias → RF AGC
*8) CRG motor voltage = 2[V]
[←]
- Flow Chart
DEH-2750/XU/ES 435 6 7 8
C
D
F
A
B
E
1 2 3 4
6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT
• 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.
• Method :
• Measuring Equipment• Measuring Points
• Oscilloscope, Two L.P.F.• E, F, REFO1
• Disc • TCD-782• Mode • TEST MODE
• Checking Procedure1. 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.• NoteBecause 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.
• HintReloading the disc changes the clamp position and may decrease the "wobble".
100kΩ
390pF
100kΩ
390pF
E
VREF
F
VREF
Xch Ych
L.P.F.
L.P.F.
RE
FO1
F E
CD CORE UNIT(S10)
Oscilloscope
DEH-2750/XU/ES441 2 3 4
C
D
F
A
B
E
5 6 7 8
Grating waveform
45°
0°
75°
60°
30°
90°
Ech → Xch 20mV/div, ACFch → Ych 20mV/div, AC
DEH-2750/XU/ES 455 6 7 8
C
D
F
A
B
E
1 2 3 4
6.3 ERROR MODE
- Error Messages
If a CD is not operative or stopped during operation due to an error, the error mode is turned on and cause(s) of the error is indicated with a corresponding number. This arrangement is intended at reducing nonsense calls from the users and also for facilitating trouble analysis and repair work in servicing.
(1) Basic Indication Method
1) When SERRORM is selected for the CSMOD (CD mode area for the system), error codes are written to DMIN (minutes display area) and DSEC (seconds display area). The same data is written to DMIN and DSEC. DTNO remains in blank as before.
2) Head unit display examples
Depending on display capability of LCD used, display will vary as shown below. xx contains the error number.
8-digit display 6-digit display 4-digit display
ERROR–xx ERR–xx E–xx
(2) Error Code List
Code Class Displayed error code Description of the code and potential cause(s)
10 Electricity Carriage Home NG CRG can't be moved to inner diameter.
SERVO LSI Com- CRG can't be moved from inner diameter.
munication Error → Failure on home switch or CRG move mechanism.
Communication error between microcomputer and SERVO LSI.
11 Electricity Focus Servo NG Focusing not available.
→ Stains on rear side of disc or excessive vibrations on REWRITABLE.
12 Electricity Spindle Lock NG Spindle not locked. Sub-code is strange (not readable).
Subcode NG → Failure on spindle, stains or damages on disc, or excessive vibrations.
A disc not containing CD-R data is found.
Turned over disc are found, though rarely.
CD signal error.
17 Electricity Setup NG AGC protection doesn't work. Focus can be easily lost.
→ Damages or stains on disc, or excessive vibrations on REWRITABLE.
30 Electricity Search Time Out Failed to reach target address.
→ CRG tracking error or damages on disc.
44 Electricity ALL Skip Skip setting for all track.
(CD-R/RW)
50 Mechanism CD On Mech Error Mechanical error during CD ON.
→ Defective loading motor, mechanical lock and mechanical sensor.
A0 System Power Supply NG Power (VD) is ground faulted.
→ Failure on SW transistor or power supply (failure on connector).
Remarks: Mechanical errors are not displayed (because a CD is turned off in these errors).
Unreadable TOC does not constitute an error. An intended operation continues in this case.
Upper digits of an error code are subdivided as shown below:
1x: Setup relevant errors, 3x: Search relevant errors, Ax: Other errors.
DEH-2750/XU/ES461 2 3 4
C
D
F
A
B
E
5 6 7 8
6.4 SYSTEM MICROCOMPUTER TEST PROGRAM
- PCL OutputIn 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.
DEH-2750/XU/ES 475 6 7 8
C
D
F
A
B
E
1 2 3 4
7. GENERAL INFORMATION7.1 DIAGNOSIS7.1.1 DISASSEMBLY
- Removing the CD Mechanism Module (Fig.1)
1
Fig.1
- Removing the Case (not shown)
Grille Assy
- Removing the Grille Assy (Fig.1)
1. Remove the Case.
CD Mechanism Module
1
1
1
1
Fig.2Tuner Amp Unit
- Removing the Tuner Amp Unit (Fig.2)
Remove the screw.1
Remove the four screws.
Disconnect the connector and then remove theCD Mechanism Module.
2 Release the two latchs and then removethe Grille Assy.
2 2
1
22
2
3 33
Remove the three screws.2
Straighten the tabs at three locationsindicated and then remove theTuner Amp Unit.
3
DEH-2750/XU/ES481 2 3 4
C
D
F
A
B
E
5 6 7 8
- How to hold the Mechanism Unit1. Hold the top and bottom frame.2. Do not squeeze top frame's front portion too tight, because it is fragile.
- Removing the Upper and Lower Frames1. 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.
Do not squeeze.
Lower FrameDamper
Carriage Mechanism
A
C
A
B
B
Damper
Damper
C
A
A
A
Upper Frame
DEH-2750/XU/ES 495 6 7 8
C
D
F
A
B
E
1 2 3 4
- Removing the Pickup Unit1. 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.
Shorting Solder
Planet Gear
Change Arm
Inner Holder
Styling Holder
Feed Screw
Washer
Pickup Lock Arm
DEH-2750/XU/ES501 2 3 4
C
D
F
A
B
E
5 6 7 8
7.1.2 CONNECTOR FUNCTION DESCRIPTION
Pin No.12345678
B.UPGNDACCNCNCB.REMNCNC
Pin No.9
10111213141516
RL-FL-RL+FL+RR-FR-RR+FR+
ANTENNA JACK REAR OUTPUT
10A
16 2115
1413
1211
109
87
65
43
DEH-2750/XU/ES 515 6 7 8
C
D
F
A
B
E
1 2 3 4
7.2 PARTS7.2.1 IC
Pin No.1
2, 34
5, 6789
101112131415161718
19, 202122232425262728293031323334
35, 3637383940414243
44, 454647484950515253545556575859606162
Function and OperationModel select inputNot usedGNDNot usedVDDDisplay microcomputer data inputDisplay microcomputer communication data outputA/D converter power supply outputPLL data inputPLL data outputPLL clock outputClock adjustment outputTest program inputCD LSI serial data inputCD LSI serial data outputCD LSI serial clock outputNot usedDisplay microcomputer chip select outputIllumination power outputNot usedCD LSI reset control outputCD LSI command data control outputCD LSI strobe outputCD LSI ceramic oscillator oscillation outputDriver outputLoad/eject outputDriver control outputNot usedOutput for dark current reduction circuitGNDTEL mute inputRotary volume input 0, 1ROM collection data outputROM collection clock outputROM collection chip select outputRDS decoder receiving output (Not used)VD outputNot usedSystem power outputNot usedWired remote control inputIllumination inputSystem mute outputAuto antenna control outputNot usedE.VOL strobe outputE.VOL data outputE.VOL clock outputNot usedPLL chip enable output 2PLL chip enable outputRDS LK input (Not used)RDS clock input (Not used)RDS 57K input (Not used)ResetPLL lock detection inputRDS clock input
Pin NameMODEL1NCAVSSNCAVREF1KYDTDPDTADPWTUNPDITUNPDOTUNPCKPCLTESTINXSIXSOXSCKNCswvddILMPWNCXRSTXA0XSTBXTALENCONTLOEJCLCONTNCDALMONVSSTELINROT0, 1ROMDATAROMCLKROMCSRECEIVEVDCONTNCSYSPWNCSTRKEY2isensMUTEANTPWNCVSTVDTVCKNCTUNPCE2TUNPCERDTRDSLKRDS57KRESETLDETRCK
I/OI
IOOIOOOIIOO
OO
OOOOOOO
O
IIOOOOO
O
IIOO
OOO
OOIII
II
- Pin Functions(PE5462A)
DEH-2750/XU/ES521 2 3 4
C
D
F
A
B
E
5 6 7 8
20
21 40
41
60
6180
1
* PE5462A
Pin No.636465666768
69, 7071727374757677787980
Pin NameasensbsensdsenssourceVSSVDDX2, 1IC(VPP)NCVSSAVDDAVREF1SLTEMPVDSENSDISCSENSSTRKEY1
I/OIIII
IIIII
Function and OperationACC sense inputBack up sense inputGrille detach sense inputSource sense inputGNDVDDCrystal oscillator connection pinGNDNot usedVSSVDDVDDSignal level inputTemperature detection inputVD power supply short circuit inputDISC loading detection inputWired remote control input
IC's marked by * are MOS type.Be careful in handling them because they are very liable to be damaged by electrostatic induction.
BA33BC0FP
-
+
Vref
321VCCNCOUT
Vref
OCP TSD
DEH-2750/XU/ES 535 6 7 8
C
D
F
A
B
E
1 2 3 4
- Pin Functions(PD6340A)Pin No. Pin Name I/O Function and Operation
1-5 SEG4-0 O LCD segment output6-9 COM3-0 O LCD common output 10 VLCD LCD drive power supply
11-14 KST3-0 O Key strobe output15,16 KDT0,1 I Key data input (analogue input)
17 REW I Remote control reception input18 DPDT I Display data input19 NC Not used20 KYDT O Key data output21 MODA GND22 X0 Crystal oscillator connection pin23 X1 Crystal oscillator connection pin24 VSS GND
25,26 KDT2,3 I Key data input27 NC Not used28 KST4 O Key strobe output
29-32 NC Not used33-55 SEG35-13 O LCD segment output
56 VDD Power supply57-64 SEG12-5 O LCD segment output
* PD6340A
NJM2388F84 NJM2885DL1-33
49
48 33
32
17
161
64
1 2 3
VD
D
GN
D
5 4
VO
UT
N.C
.
N.C
.
Vref
IN
1
GND
2
OUT
3
BandgapReference
ThermalProtection
+-
DEH-2750/XU/ES541 2 3 4
C
D
F
A
B
E
5 6 7 8
No. Symbol I/O Explain1 AMANT I AM antenna input 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.
2 RFGND RF ground Ground of antenna block3 FMANT I FM antenna input Input of FM antenna 75Ω Surge absorber(DSP-201M-S00B) is necessary.4 VCC power supply The power supply for analog block. D.C 8.4V ± 0.3V5 SL O signal level Output of FM/AM signals level6 CE2 I chip enable-2 Chip enable for EEPROM ”Low” active7 WC I write control You can write EEPROM, when EEPROM write control is “Low”.
Ordinary non connection8 CE1 I chip enable-1 Chip enable for AF•RF ”High” active9 CK I clock Clock
10 DI I data in Data input11 NC non connection Not used12 OSCGND osc ground Ground of oscillator block13 ROM_VDD power supply Power supply for EEPROM pin 13 is connected with a power supply of
micro computer.14 DO O data out Data output15 DGND digital ground Ground of digital block16 NC non connection Not used17 VDD_3.3 power supply The power supply for digital block. 3.3V ± 0.2V18 NC non connection Not used19 NC non connection Not used20 NC non connection Not used21 NC non connection Not used22 AUDIOGND audio ground Ground of audio block23 L ch O L channel output FM stereo “L-ch” signal output or AM audio output 24 R ch O R channel output FM stereo “R-ch” signal output or AM audio output
FMRF
ANT adjRF adj
FM ANT
T51 CF52CF51
RFG
ND
OS
CG
ND
DG
ND
AU
DIO
GN
D
NC
VC
C
VD
D_3
.3
3.3V 2.5VIC 4
3.3V 2.5V
←
IC 22.5V
WC
CE
2
RO
M_V
DD SL DI
CK
CE
1
NC
DO
NC
NC
NC
NC
7 6 13 5 10 9 8 11 14 18 19 20 21
1
3
2 12 15 22 16 4 17
IC 13.3V
AM ANT FMRFATT
LPFOSC
IC 3 EEPROM5.0V
IC 55V 3.3V←
ATT
MIXER, IF AMP DET, FM MPX
24
23
Rch
Lch
- FM/AM Tuner Unit
DEH-2750/XU/ES 555 6 7 8
C
D
F
A
B
E
1 2 3 4
7.2.2 DISPLAY
- LCD(YAW5045)(DEH-2750/XU/ES, DEH-2750/XU/CN)- LCD(YAW5031)(DEH-2750B/XU/ES)
SE
GM
EN
T
CO
MM
ON
DEH-2750/XU/ES561 2 3 4
C
D
F
A
B
E
5 6 7 8
7.3 OPERATIONAL FLOW CHART
AVREF1, VDD, AVDD=5VPin 7, 68, 74, 75
Power ON
bsens=L
asens=L
bsensPin 64
asensPin 63
swvdd←LPin 21
Source keys operative
Completes power-on operation.(After that, proceed to each source operation.)
SYSPW←HPin 43
Starts communication with Grille microcomputer.
Source ON
300ms
300ms
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.
DEH-2750/XU/ES 575 6 7 8
C
D
F
A
B
E
1 2 3 4
7.4 CLEANING
Before shipping out the product, be sure to clean the following portions by using the prescribed cleaning tools:
Portions to be cleaned Cleaning tools
CD pickup lenses Cleaning liquid : GEM1004
Cleaning paper : GED-008
DEH-2750/XU/ES581 2 3 4
C
D
F
A
B
E
5 6 7 8
8. OPERATIONS
DEH-2750/XU/ES 595 6 7 8
C
D
F
A
B
E
1 2 3 4
About the fixing screws for the front panelIf you do not operate the Detaching and Replacingthe Front Panel Function, use the supplied fixingscrews and fix the front panel to this unit.
Fixing screw(CXX1066)
Fixing screw(CXX1066)
DEH-2750/XU/ES601 2 3 4
C
D
F
A
B
E
5 6 7 8
- Connection Diagram
+ ≠+ ≠
+ ≠+ ≠+ ≠
+ ≠
Vio
let
With
a2
spea
ker
syst
em,d
ono
tco
nnec
tan
ythi
ngto
the
spea
ker
lead
sth
atar
eno
tcon
nect
edto
spea
kers
.
rR
easp
eake
r
Rig
ht
Rea
rsp
eake
r
Vio
let/b
lack
Gra
y/bl
ack
Fron
tsp
eake
r
Gra
yW
hite
Whi
te/b
lack
Gre
en
Gre
en/b
lack
Left
Fron
tsp
eake
r
Rea
rsp
eake
rR
ear
spea
ker
Syst
emre
mot
eco
ntro
l
Con
nect
ing
cord
sw
ithR
CA
pin
plug
s(s
old
sepa
rate
ly)
Pow
eram
p(s
old
sepa
rate
ly)
Fuse
Blu
e/w
hite
Tosy
stem
cont
rol
term
inal
ofth
epo
wer
amp
orA
uto-
ante
nna
rela
yco
ntro
lter
min
al(m
ax.3
00m
A12
VD
C).
Thi
sPr
oduc
t
Rea
rou
tput Ant
enna
jack
Yel
low
Tote
rmin
alal
way
ssu
pplie
dw
ith
pow
erre
gard
less
ofig
nitio
nsw
itch
posi
tion.
Red
Toel
ectr
icte
rmin
alco
ntro
lled
byig
nitio
nsw
itch
(12
VD
C)
ON
/OFF
.
Bla
ck(g
roun
d)To
vehi
cle
(met
al)
body
.
Perf
orm
thes
e co
nnec
tions
whe
n us
ing
the
optio
nal a
mpl
ifie
r.
DEH-2750/XU/ES 615 6 7 8
C
D
F
A
B
E
1 2 3 4
- Jigs List
Test DiscL.P.F.
TCD-782 Checking the gratingg g gChecking the grating g g g (Two pieces)( )
Name Jig No. Remarks
DEH-2750/XU/ES621 2 3 4