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Service
Manual
ORDER NO.
CRT2970
DEH-1550/XU/ES
HIGH POWER CD PLAYER WITH FM/AM TUNER
DEH-1550
DEH-1550B
XU/ES
XU/ES
- This service manual should be used together with the following manual(s):
Model No.
CX-3026
Order No.
CRT2944
Mech. Module Remarks
S10
CD Mech. Module:Circuit Description, Mech.Description, Disassembly
For details, refer to "Important symbols for good services".
PIONEER CORPORATION
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS (USA) INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
PIONEER EUROPE NV Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936
C PIONEER CORPORATION 2002
K-ZZU. NOV. 2002 Printed in Japan
1
A
2
3
4
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.
B
C
[ Important symbols for good services ]
D
In this manual, the symbols shown-below indicate that adjustments, settings or cleaning should be made securely.
When you find the procedures bearing any of the symbols, be sure to fulfill them:
1. Product safety
You should conform to the regulations governing the product (safety, radio and noise, and other regulations), and
should keep the safety during servicing by following the safety instructions described in this manual.
2. Adjustments
To keep the original performances of the product, optimum adjustments or specification confirmation is indispensable.
In accordance with the procedures or instructions described in this manual, adjustments should be performed.
3. Cleaning
E
For optical pickups, tape-deck heads, lenses and mirrors used in projection monitors, and other parts requiring cleaning,
proper cleaning should be performed to restore their performances.
4. Shipping mode and shipping screws
To protect the product from damages or failures that may be caused during transit, the shipping mode should be set or
the shipping screws should be installed before shipping out in accordance with this manual, if necessary.
5. Lubricants, glues, and replacement parts
Appropriately applying grease or glue can maintain the product performances. But improper lubrication or applying
glue may lead to failures or troubles in the product. By following the instructions in this manual, be sure to apply the
prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed
ones should be used.
F
2
DEH-1550/XU/ES
1
2
3
4
5
6
7
8
CONTENTS
A
SAFETY INFORMATION ............................................................................................................................................2
1. SPECIFICATIONS .......................................................................................................................................................4
2. EXPLODED VIEWS AND PARTS LIST.......................................................................................................................5
2.1 PACKING...............................................................................................................................................................5
2.2 EXTERIOR.............................................................................................................................................................6
2.3 CD MECHANISM MODULE .................................................................................................................................8
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ...................................................................................................10
3.1 BLOCK DIAGRAM ..............................................................................................................................................10
3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE) ........................................................................................12
3.3 KEYBOARD UNIT ...............................................................................................................................................18
3.4 CD MECHANISM MODULE ...............................................................................................................................20
4. PCB CONNECTION DIAGRAM ................................................................................................................................24
4.1 TUNER AMP UNIT .............................................................................................................................................24
4.2 KEYBOARD UNIT ...............................................................................................................................................28
4.3 CD MECHANISM MODULE ...............................................................................................................................30
5. ELECTRICAL PARTS LIST ........................................................................................................................................32
6. ADJUSTMENT .........................................................................................................................................................35
6.1 CD ADJUSTMENT .............................................................................................................................................35
6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT................................................................36
6.3 ERROR MODE ....................................................................................................................................................38
7. GENERAL INFORMATION .......................................................................................................................................39
7.1 DIAGNOSIS ........................................................................................................................................................39
7.1.1 DISASSEMBLY ..............................................................................................................................................39
7.1.2 CONNECTOR FUNCTION DESCRIPTION ....................................................................................................44
7.2 PARTS .................................................................................................................................................................45
7.2.1 IC ....................................................................................................................................................................45
7.2.2 DISPLAY.........................................................................................................................................................52
7.3 OPERATIONAL FLOW CHART...........................................................................................................................53
7.4 CLEANING ..........................................................................................................................................................54
8. OPERATIONS ...........................................................................................................................................................55
B
C
D
E
- CD Player Service Precautions
1. 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.
2. To protect the pickup unit from electrostatic discharge during serviving, take an appropriate treatment(shorting-solder) by referring to "the DISASSEMBLY" on page 39.
3. After replacing the pickup unit, be sure to check the
grating.(See p.36.)
4. In this product, because the memory capacity of the
microcomputer is insufficient, the test mode is not
installed. However grating of the pickup unit can be
confirmed.
F
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DEH-1550/XU/ES
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7
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1
A
2
3
4
3
4
1. SPECIFICATIONS
B
C
D
E
F
4
DEH-1550/XU/ES
1
2
6
5
8
7
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
6
17
5
A
3
4
8
2
9
7
11
12
B
16
15
10
1
C
14
13
NOTE:
- Parts marked by “*” are generally unavailable because they are not in our Master Spare Parts List.
- Screws adjacent to ∇ mark on the product are used for disassembly.
D
- For the applying amount of lubricants or glue, follow the instructions in this manual.
(In the case of no amount instructions, apply as you think it appropriate.)
- PACKING SECTION PARTS LIST
Mark No. Description
*
*
Part No.
Mark No. Description
1
2
3
4
5
Cord Assy
Spring
Screw
Polyethylene Bag
Screw
CDE7060
CBH1650
CBA1002
CEG-127
CRZ50P090FTC
6
7
8
9
10
Screw
Polyethylene Bag
Handle
Bush
Polyethylene Bag
TRZ50P080FTC
CEG-158
CNC5395
CNV3930
CEG-162
11-1 Owner’s Manual
11-2 Installation Manual
12 Carton(DEH-1550)
Carton(DEH-1550B)
13 Contain Box(DEH-1550)
Contain Box(DEH-1550B)
14
15
16
17
Protector
Protector
Case Assy
Accessory Assy
Part No.
CRD3669
CHG4991
CHG4992
CHL4991
CHL4992
E
CHP2663
CHP2664
CXB3520
CEA3439
CRD3668
- Owner's Manual, Installation Manual
Model
DEH-1550/XU/ES
DEH-1550B/XU/ES
Part No.
CRD3668
CRD3669
Language
English,Spanish,Portuguese(B),
Arabic,Traditional chinese
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DEH-1550/XU/ES
5
6
7
8
1
2
3
4
3
4
2.2 EXTERIOR
A
B
C
D
E
F
6
DEH-1550/XU/ES
1
2
6
5
8
7
- EXTERIOR SECTION PARTS LIST
Mark No. Description
1
2
3
4
5
Screw
Screw
Screw
Cord Assy
Cable
A
Mark No. Description
Part No.
LCD(LCD1801)(DEH-1550B)
CAW1734
46 Connector(CN1801)
CKS3580
47 Holder
CNC9617
48 Sheet
CNM7932
BSZ26P060FTC
BSZ30P060FTC
BSZ30P200FTC
CDE7060
CDE7113
6
7
8
9
10
Fuse(10A)
CEK1208
CD Mechanism Module(S10)CXK5600
Case
CNB2793
Holder
CNC8659
Earth Plate
CNC8915
11
12
13
14
15
Cushion
CNM8275
Insulator
CNM8059
Insulator
CNM8174
Panel
CNS7239
Tuner Amp Unit(DEH-1550)
CWM8570
Tuner Amp Unit(DEH-1550B) CWM8571
16
17
18
19
20
Screw
Screw
Screw
Pin Jack(CN352)
Terminal(CN402)
ASZ26P060FTC
BPZ26P080FTC
BSZ26P160FTC
CKB1028
CKF1059
21
22
23
24
25
Plug(CN901)
Connector(CN831)
Connector(CN651)
Antenna Jack(CN401)
Holder
CKM1376
CKS3581
CKS3835
CKX1056
CND1241
26
27
28
29
30
Holder
Heat Sink
FM/AM Tuner Unit
Holder
Chassis Unit
CND1328
CNR1668
CWE1646
CND1054
CXB9542
Part No.
49
50
51
52
53
Lens
Lighting Conductor
Rubber
Connector
Grille Unit(DEH-1550)
Grille Unit(DEH-1550)
CNV7060
CNV7367
CNV7368
CNV7369
CXB9505
CXB9806
54
55
56
57
58
Button
Spring
Spring
Spring
Bracket
CAC4836
CBH1835
CBH2208
CBH2367
CNC6791
59
60
61
62
63
Holder
Cover
Panel
Arm
Arm
CNC8042
CNM6276
CNS7238
CNV4692
CNV4728
64
65
66
67
68
Arm
Screw
IC(IC302)
Screw
Transistor(Q911,921,991)
CNV5576
IMS20P030FZK
PAL007A
ISS26P055FTC
2SD1275
69 Sheet(DEH-1550B)
B
C
CNM7881
D
31 Detach Grille Assy(DEH-1550) CXB9573
Detach Grille Assy(DEH-1550B) CXB9574
32 Screw
BPZ20P100FZK
33 Button(1-6)
CAC7739
34 Button(Volume)
CAC7740
35
36
37
38
39
Button(Up)
Button(Down)
Button(Eject)
Button(Band)
Button(Audio)
CAC7741
CAC7742
CAC7743
CAC7745
CAC7746
40
41
42
43
44
Button(SRC-EQ)
CAC7749
Button(Detach)
CAC7753
Spring
CBH2210
Cover
CNS7232
Keyboard Unit(DEH-1550) CWM8578
Keyboard Unit(DEH-1550B)
CWM8579
E
F
45 LCD(LCD1801)(DEH-1550) CAW1733
7
DEH-1550/XU/ES
5
6
7
8
1
2
3
4
3
4
2.3 CD MECHANISM MODULE
A
B
C
D
E
C
F
8
DEH-1550/XU/ES
1
2
6
5
8
7
- CD MECHANISM MODULE SECTION PARTS LIST
Mark No. Description
1
2
3
4
5
*
Part No.
Mark No. Description
CD Core Unit(S10)
Connector(CN101)
Connector(CN701)
Screw
Screw
CWX2708
CKS4182
CKS4188
BMZ20P035FTC
BSZ20P040FTC
6
7
8
9
10
Screw(M2x4)
Screw(M2x3)
Screw(M2x3)
Washer
Washer
CBA1362
CBA1511
CBA1527
CBF1037
CBF1038
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
CBH2611
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
Spring
Shaft
Frame
Frame
CBH2688
CBL1614
CLA3845
CNC9962
CNC9963
36
37
38
39
40
Bracket
Bracket
Arm
Arm
Lever
CNC9966
CNC9967
CNC9968
CNC9973
CNC9983
41
42
43
44
45
Lever
Sheet
Collar
Guide
Arm
CNC9984
CNM8134
CNV6906
CNV6925
CNV7198
46 Rack
47 Holder
A
Part No.
48 Holder
49 Arm
50 Gear
CNV7202
CNV7203
CNV7207
51
52
53
54
55
Gear
Gear
Gear
Gear
Gear
CNV7208
CNV7209
CNV7210
CNV7211
CNV7212
56
57
58
59
60
Rack
Arm
Arm
Guide
Roller
CNV7214
CNV7215
CNV7216
CNV7217
CNV7218
61
62
63
64
65
Gear
Arm
Arm
Arm
Damper
CNV7219
CNV7221
CNV7220
CNV7222
CNV7313
66
67
68
69
70
Damper
Arm
Arm
Guide
Guide
CNV7314
CNV7341
CNV7342
CNV7360
CNV7361
71
72
73
74
75
Holder
Arm
Gear
Damper
Motor Unit(M1)
CNV7437
CNV7444
CNV7595
CNV7618
CXB6007
76
77
78
79
80
Chassis Unit
Screw Unit
Gear Unit
Arm Unit
Arm Unit
CXB8728
CXB8729
CXB8731
CXB8732
CXB8735
81
82
83
84
85
Arm Unit
Motor Unit(M2)
Bracket
Screw
Screw(M2x5)
CXB8852
CXB8933
CNC9985
JFZ20P020FTC
EBA1028
86
87
88
89
90
Screw
JFZ20P020FTC
Screw
JGZ17P022FTC
Washer
YE15FTC
Washer
YE20FTC
Pickup Unit(Service)(P10) CXX1641
91 Screw
B
C
D
IMS26P030FMC
CNV7199
CNV7201
F
9
DEH-1550/XU/ES
5
E
6
7
8
1
2
3
4
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
A TUNER AMP UNIT
A
14
DO
11
LDET
DI
5V
CK
SL
CE2
IC 3 EEPROM
5.0V
10 9 8
CE1
5
ROM_VDD
13
CE2
IC 5
3.3V
←
6
TUNPDO
TUNPDI
TUNPCK
VDD
55
CE1
56
11
OSC
B
ANTENNA
CN402
12
13
AM ANT
1
LPF
FMRF
ATT
61
76
3
IC 2
2.5V
IC 1
3.3V
FM ANT
ATT
FMRF
ANT adj
Lch
MIXER, IF AMP
23
DET, FM MPX
RF adj
T51
CF52
VCC
C
3.3V
IC 4
3.3V 2.5V 2.5V
←
VDD_3.3
CF51
17
4
2
TUN3V
IN2_L
VCC
3
PICKUP UNIT
(SERVICE)(P10)
C
D CD CORE UNIT(S10)
CN101 Q101
LASER
DIODE
LD+
MD
FOCUS ACT.
MONITOR TRACKING ACT.
DIODE
2
5
LOADING/ CARRIAGE
MOTOR
PD
LOUT
xtal
LOUT
20
1
4
FOP
TOP
FD, TD, SD, MD
42
ACT,MOTOR
DRIVER
M
16
SOP
15
SOM
17
LCOM
18
LCOP
M
LOEJ
CONT
8
14
LOUT
23
X201
SERVO XTAL
CONTROL,
DSP,
LPF, DAC
12
FOP
13
TOP
SPINDLE
MOTOR
LD
AC, F, E, BD
FOP
TOP
CN651
CN701
1
14
HOLOGRAM
UNIT
D
IN3_L
24
SYS
CONTR
IC 201
UPD63712GC
IC 60
PE5
LIMIT
HOME
22
LOEJ
9
CONT
LOEJ
5
17
7
15
29
CONT
28
DSCSNS
65
LOEJ
CONT
IC 301
BA5996FP
DSCSNS
CLMP
6
16
11
11
1
2
21 VD
20
CLAMSW
Q991
CLAMP
E
12EJ
8EJ
DSCSNS
VD
VD
VDD
B.U
3
IC 701
1 5
4
3.3V REGULATOR
3R3V
DSCSNS
27
CLAMSW
16
XSI
IC652
TC7SET08FU
1
Q992
NJM2391DL1-33
41
VDCONT
F
10
DEH-1550/XU/ES
1
2
3
4
VDCONT
6
5
8
7
A
CN352
CE2
55
CE1
REAR L CH
TUNPCE2
Q 352
56 TUNPCE1
11
TUNPDI
12
TUNPDO
13
TUNPCK
61
76
B
Q453
LDET
SL
VDD REGULATOR
Q911
VDD
B.U
SYS 8V REGULATOR
VCK
VDT
VST
Q922
Q921
VCC
SYSTEM
CONTROLLER
CN901
B.U
SYSPW
BACKUP
B.U
16
FUSE
Q923
10A
IC 601 (1/2)
PE5330A
C
16
2
POWER AMP
VST/ VCK/ VDT
IN2_L
ELECTRONIC VOLUME
3
IN3_L
Frontout_L
IC 151
PML003AM
Rearout_L
10
14
IC 302
PAL007A
FL
12 RL
11
MUTE
STBY
22
4
FL-
21
FL+
3
RL-
5
RL+
15
7
7
5
5
8
8
6
6
14
14
BACK UP
GND
FLFL+
RLRL+
25
SYSPW
Q452 MUTE
23
15
Q931
SYSTEM
CONTROLLER
IC 601(2/2)
PE5330A
29
28
4
TUN3V
ASENS
BSENS
64
TUN 3V
IC 901
BA033SFP
asens
ACC
1
ACC
bsens
4
D
B.U
VCC
63
LOEJ
CONT
SYSPW
43
B.REM
11
11
B.REM
65
DSCSNS
27
CLAMSW
16
MUTE
48
B
XSI
CN831
41
KEYBOARD UNIT
E
CN1801
KEY CONTROLLER
LCD DRIVER
VDCONT
KYDT
DPDT
RESET
8
KYDT
9
DPDT
60
1
RESET
IC 961
603
S-80834CNY
S-80834ANY
2
3
3
20
4
4
18
5
5
KYDT
LCD
DPDT
VDD
VDD
SW5V
SWVDD
56
VDD
10 VLCD
21
Q801
IC 1801
PD6340A
F
KEY MATRIX
11
DEH-1550/XU/ES
5
6
7
8
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".
A-a
A
A-a
A-b
Large size
SCH diagram
C
A-a
A-b
A-a
A-b
CN701
Guide page
Detailed page
B
C
FM/AM TUNER UNIT
D
E
B
CN1801
F
A
12
DEH-1550/XU/ES
1
2
3
4
5
6
8
7
A-b
A
A
TUNER AMP UNIT
REAR
L CH
REAR
R CH
B
C
CEK1136
>
600µH
10A
GND
RLFLRL+
FL+
D
RRFRRR+
FR+
E
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.
Decimal points for resistor
and capacitor fixed values
are expressed as :
2.2 ← 2R2
0.022 ← R022
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
13
DEH-1550/XU/ES
5
6
7
8
1
2
3
4
C
CN701
A
B
C
D
E
FM/AM TUNER UNIT
a
F
14
DEH-1550/XU/ES
1
2
3
4
5
6
8
7
A
B
CN1801
B
A-a A-b
C
D
E
A-a
15
DEH-1550/XU/ES
5
6
F
7
8
C
A-a A-b
B
600µH
A
A
TUNER AMP UNIT
F
A-b
1
16
2
GND
2
3
D
E
1
2
3
3
DEH-1550/XU/ES
4
10A
>
CEK1136
REAR
R CH
REAR
L CH
1
4
5
4
5
6
7
A-a A-b
Decimal points for resistor
and capacitor fixed values
are expressed as :
2.2 ← 2R2
0.022 ← R022
6
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.
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.
FR+
FRRR+
RR-
FL+
RL+
FL-
RL-
5
7
8
A
B
C
D
E
A-b
F
DEH-1550/XU/ES
8
17
1
A
2
3
4
3
4
3.3 KEYBOARD UNIT
B
C
D
E
F
B
18
DEH-1550/XU/ES
1
2
6
5
7
8
A
B
KEYBOARD UNIT
B
A
CN831
EQ
C
LOUD
CLOCK
40mA, 14V
LOC/BSM
D
E
F
B
19
DEH-1550/XU/ES
5
6
7
8
1
2
3
4
3.4 CD MECHANISM MODULE
Pickup Unit(Service)(P10)
A
#
F
B
F
T
T
T
T
F
F
T
T
F
T
T
F
F
F
F
F
T
T
!
C
0
1
9
D
MOTOR DRIVER
@
S
T
SPINDLE MOTOR
LOADING/CARRIAGE
MOTOR
M2 CXB8933
E
7
S
M1 CXB6007
5
C
F
S
8
6
C
3
C
C
C
F
F
T
S
S
T
3.3V
REGULATOR
F
C
20
DEH-1550/XU/ES
1
2
3
4
6
5
8
7
A
SIGNAL LINE
FOCUS SERVO LINE
F
TRACKING SERVO LINE
CARRIAGE SERVO LINE
S
SPINDLE SERVO LINE
F
T
C
S
T
C
SWITCHES:
CD CORE UNIT
S901 : HOME SWITCH.....ON-OFF
S902 : CLAMP SWITCH....ON-OFF
S903 : DSCSNS SWITCH....ON-OFF
S904 : 12EJ SWITCH....ON-OFF
S905 : 8EJ SWITCH....ON-OFF
The underlined indicates the switch position.
RF AMP / SERVO / DSP
DAC / LPF
B
C
C
9
CD CORE UNIT (S10)
D
4
2
A
CN651
@
S
5
C
6
E
3
$%
F
C
21
DEH-1550/XU/ES
5
6
7
8
1
2
- Waveforms
A
1 DSCSNS
2 CLCONT
3 LOEJ
4 VD
B
5V/div
5V/div
5V/div
10V/div
3
4
Note : 1. The encircled numbers denote measuring points in the circuit diagram.
2. Reference voltage REFO1(1.65V)
500ms/div 1 DSCSNS
2 CLCONT
3 LOEJ
4 VD
5V/div
5V/div
5V/div
10V/div
500ms/div 5 SIN
6 CIN
7 TIN
2s/div
1V/div
500mV/div
500mV/div
When loading a 12cm CD
When loading an 8cm CD
When setting up after loading a 12cm CD-DA
disc
Ref.:
GND
Ref.:
GND
Ref.:
REFO
Mode:
Normal
Mode:
Normal
Mode:
Normal
8 FIN
9 RFOK
5 SIN
200mV/div 500ms/div 0 TE
2V/div
! FE
2V/div
500mV/div 200ms/div ! FE
500mV/div
8 FIN
0 TE
7 TIN
500mV/div 20ms/div
500mV/div
500mV/div
500mV/div
When setting up "Source On"(12cm CD-DA)
When setting up "Source On"
During "Play"(CD-DA)
Ref.:
REFO
Ref.:
REFO
Ref.:
REFO
Mode:
Normal
Mode:
Normal
Mode:
Normal
C
@ MDX
5 SIN
500mV/div 5ms/div
1V/div
@ MDX
5 SIN
500mV/div 5µs/div
1V/div
# RFAGC
500mV/div 0.5µs/div
D
E
F
Spindle waveform during "Play"
Spindle waveform during "Play"(Magnified)
Ref.:
REFO
Ref.:
REFO
Ref.:
REFO
Mode:
Normal
Mode:
Normal
Mode:
Normal
8 FIN
! FE
500mV/div 200ms/div 0 TE
500mV/div
# RFAGC
500mV/div 2ms/div
500mV/div
RF eye pattern
# RFAGC
0 TE
7 TIN
Focus Search
When "Tracking Open"
1 Track Jump
Ref.:
REFO
Ref.:
REFO
Ref.:
REFO
Mode:
TEST
Mode:
TEST
Mode:
TEST
22
1V/div
500µs/div
500mV/div
500mV/div
DEH-1550/XU/ES
1
2
3
4
6
5
# RFAGC
0 TE
7 TIN
1V/div
500ms/div # RFAGC
500mV/div
0 TE
500mV/div
7 TIN
8
7
1V/div
5ms/div
500mV/div
500mV/div
# RFAGC
7 TIN
0 TE
8 FIN
1V/div
1V/div
1V/div
1V/div
32 Track Jump
100(32x3) Track Jump
When reproducing black dots(1mm)
Ref.:
REFO
Ref.:
REFO
Ref.:
REFO
Mode:
TEST
Mode:
TEST
Mode:
Normal
# RFAGC
0 TE
6 CIN
5 SIN
500µs/div # RFAGC
1V/div
1V/div
0 TE
500mV/div
6 CIN
2V/div
5 SIN
5ms/div
1V/div
1V/div
500mV/div
2V/div
# RFAGC
0 TE
6 CIN
5 SIN
B
500µs/div
1V/div
1V/div
500mV/div
2V/div
When reproducing scratch(1mm)
When reproducing fingerprint(65µm)
During inside/outside search
(outer circumference → inner circumference)
Ref.:
REFO
Ref.:
REFO
Ref.:
REFO
Mode:
Normal
Mode:
Normal
Mode:
Normal
$ LOUT
% ROUT
1V/div
1V/div
200µs/div 1 DSCSNS 5V/div
2 CLCONT 5V/div
3 LOEJ
5V/div
A
500µs/div
200ms/div 1 DSCSNS 5V/div
2 CLCONT 5V/div
3 LOEJ
5V/div
Analog Audio
When "Eject"(12cm CD)
When "Eject"(8cm CD)
Ref.:
AGND
Ref.:
GND
Ref.:
GND
Mode:
Normal
Mode:
Normal
Mode:
Normal
C
200ms/div
D
E
F
23
DEH-1550/XU/ES
5
6
7
8
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
Connector
A
TUNER AMP UNIT
CORD ASSY
Capacitor
SIDE A
B
P.C.Board
Chip Part
SIDE B
C
D
C
CN701
E
F
B
A
24
CN1801
DEH-1550/XU/ES
1
2
3
4
5
6
8
7
A
SIDE A
ANTENNA
B
FM/AM TUNER UNIT
C
D
E
F
A
FRONT
25
DEH-1550/XU/ES
5
6
7
8
1
2
3
4
3
4
A
A
TUNER AMP UNIT
B
C
D
E
F
A
26
DEH-1550/XU/ES
1
2
5
6
7
8
A
SIDE B
B
C
D
E
F
A
27
DEH-1550/XU/ES
5
6
7
8
1
2
3
4
4.2 KEYBOARD UNIT
B
B
SIDE A
KEYBOARD UNIT
SIDE B
KEYBOARD UNIT
BAND
EJECT
EJECT
AUDIO
A
LOC/BSM
LOUD
B
4
5
6
C
3
D
A
1
2
CN831
B
SRC
EQ
EQ
CLOCK
F
VOL-
VOL+
VOL+
VOL-
E
28
DEH-1550/XU/ES
1
2
3
4
5
6
7
8
A
B
C
D
E
F
29
DEH-1550/XU/ES
5
6
7
8
1
2
3
4
4.3 CD MECHANISM MODULE
C
SIDE A
CD CORE UNIT(S10)
A
M2
LOADING
/CARRIAGE MOTOR
B
M1
SPINDLE MOTOR
C
A
CN651
D
HOME
E
PICKUP UNIT
(SERVICE)(P10)
F
C
30
DEH-1550/XU/ES
1
2
3
4
6
5
C
8
7
SIDE B
CD CORE UNIT(S10)
A
8EJ
12EJ
DSCSNS
CLAMP
B
C
D
E
F
C
31
DEH-1550/XU/ES
5
6
7
8
1
A
2
3
4
5. ELECTRICAL PARTS LIST
NOTES:
- 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.....
B
=====Circuit Symbol and No.===Part Name
--- -----------------------------------------------
A
Part No.
-------------------------
D
E
IC
IC
IC
IC
IC
151
302
601
652
901
IC
IC
IC
IC
IC
PML003AM
PAL007A
PE5330A
TC7SET08FU
BA033SFP
IC
Q
Q
Q
Q
961
352
452
453
801
IC
Transistor
Transistor
Transistor
Transistor
S-80834CNY
IMH3A
DTC124EU
DTA124EU
2SA1036K
Q
Q
Q
Q
Q
821
822
911
912
921
Transistor
Transistor
Transistor
Transistor
Transistor
2SA1036K
DTC114EU
2SD2375
IMD2A
2SD2375
Q
Q
Q
Q
Q
922
923
931
991
992
Transistor
Transistor
Transistor
Transistor
Transistor
2SB1243
DTC114EU
IMX1
2SD2375
IMD2A
D
D
D
D
D
452
831
832
833
834
Diode
Diode
Diode
Diode
Diode
DAN202U
1SS133
1SS133
1SS133
1SS133
D
D
D
D
D
835
836
901
902
911
Diode
Diode
Diode
Diode
Diode
1SS133
1SS133
S5688G
S5688G
S5688G
D
D
D
D
D
912
921
931
932
971
Diode
Diode
Diode
Diode
Diode
HZS6L(B2)
HZS9L(B3)
HZS7L(C3)
HZS7L(A1)
S5688G
D
D
L
L
L
972
991
151
401
402
Diode
Diode
Inductor
Inductor
Inductor
S5688G
HZS9L(B1)
LAU2R2K
LAU1R0K
LAU1R0K
L
L
L
L
X
404
601
801
901
601
Ferri-Inductor
Inductor
Inductor
Choke Coil 600µH
Radiator 12.58291MHz
LAU4R7K
LAU1R0K
LAU2R2K
CTH1280
CSS1402
AR
401
Arrester
FM/AM Tuner Unit
DSP-201M
CWE1646
F
32
Part No.
-------------------------
RESISTORS
Unit Number : CWM8570(DEH-1550)
: CWM8571(DEH-1550B)
Unit Name
: Tuner Amp Unit
MISCELLANEOUS
C
=====Circuit Symbol and No.===Part Name
--- -----------------------------------------------
R
R
R
R
R
153
154
155
156
157
RS1/16S101J
RS1/16S101J
RS1/16S101J
RS1/16S101J
RAB4C102J
R
R
R
R
R
301
353
354
357
358
RD1/4PU153J
RS1/16S821J
RS1/16S821J
RS1/16S223J
RS1/16S223J
R
R
R
R
R
405
407
408
409
410
RS1/16S681J
RS1/16S681J
RS1/16S681J
RS1/16S681J
RS1/16S681J
R
R
R
R
R
414
420
421
454
455
RS1/16S0R0J
RS1/16S681J
RS1/16S473J
RS1/16S103J
RS1/16S153J
R
R
R
R
R
456
457
601
602
603
RS1/16S221J
RD1/4PU681J
RS1/16S473J
RS1/16S473J
RS1/16S103J
R
R
R
R
R
604
605
606
607
608
RS1/16S103J
RS1/16S221J
RS1/16S104J
RD1/4PU222J
RS1/16S0R0J
R
R
R
R
R
609
610
611
653
654
RD1/4PU473J
RD1/4PU681J
RS1/16S473J
RS1/16S104J
RS1/16S102J
R
R
R
R
R
661
801
802
803
821
RS1/16S221J
RS1/16S153J
RS1/16S153J
RS1/16S222J
RD1/4PU332J
R
R
R
R
R
823
833
834
836
837
RS1/16S103J
RD1/4PU222J
RD1/4PU222J
RD1/4PU104J
RD1/4PU103J
R
R
R
R
R
838
841
848
851
911
RD1/4PU102J
RS1/16S1R0J
RD1/4PU102J
RD1/4PU102J
RS1/16S223J
R
912
RD1/4PU152J
DEH-1550/XU/ES
1
2
3
4
5
6
8
7
=====Circuit Symbol and No.===Part Name
--- -----------------------------------------------
Part No.
-------------------------
=====Circuit Symbol and No.===Part Name
--- -----------------------------------------------
Part No.
-------------------------
R
R
R
R
921
923
924
925
RS1/16S0R0J
RD1/4PU821J
RD1/4PU122J
RS1/16S103J
C
C
C
C
923
961
963
981
CKSRYB103K50
CKSRYB473K50
CEJQ100M16
CKSRYB334K10
R
R
R
R
R
931
932
933
934
935
RS1/16S473J
RS1/16S104J
RD1/4PU102J
RS1/16S472J
RS1/16S473J
C
C
C
C
982
983
991
992
CKSRYB103K50
CEJQ220M16
CKSRYB473K50
CEJQ101M10
R
R
R
R
R
936
940
941
955
961
RS1/16S223J
RS1/16S104J
RS1/16S104J
RS1/16S473J
RD1/4PU102J
MISCELLANEOUS
R
R
R
R
R
962
991
992
993
994
RS1/16S822J
RD1/4PU221J
RD1/4PU221J
RS1/16S222J
RS1/16S472J
IC 1801
D 1801
D 1802
D1803-10
D1803-10
IC
Diode
Diode
LED (DEH-1550)
LED (DEH-1550B)
PD6340A
MA152WK
MA152WA
SML-310PT
SML-310VT
D
D
X
IL
IL
1811
1812
1801
1801
1801
LED
LED
Ceramic Resonator 5.00MHz
Lamp 14V 40mA(DEH-1550)
Lamp 14V 40mA(DEH-1550B)
NSSW440-9159
NSSW440-9159
CSS1547
CEL1651
CEL1662
IL 1802
IL 1802
LCD1801
LCD1801
Lamp 14V 40mA(DEH-1550)
Lamp 14V 40mA(DEH-1550B)
LCD(DEH-1550)
LCD(DEH-1550B)
CEL1651
CEL1662
CAW1733
CAW1734
CAPACITORS
C
C
C
C
C
151
152
153
154
155
CKSRYB224K16
CKSRYB224K16
CKSRYB105K10
CKSRYB105K10
CEJQ4R7M35
C
C
C
C
C
156
157
158
161
162
CEJQ4R7M35
CKSRYB153K50
CKSRYB153K50
CCSRCH100D50
CCSRCH100D50
C
C
C
C
C
163
164
165
166
167
CCSRCH100D50
CCSRCH100D50
CKSRYB104K16
CEJQ470M10
CEJQ100M16
C
C
C
C
C
301
302
303
304
309
CFTNA224J50
CFTNA224J50
CFTNA224J50
CFTNA224J50
CKSQYB225K10
C
C
C
C
C
310
312
313
353
354
CKSQYB225K10
CEJQ100M16
CKSRYB104K16
CEJQ2R2M50
CEJQ2R2M50
C
C
C
C
C
360
401
402
403
404
CKSQYB103K50
CKSRYB103K50
CKSRYB103K50
CEJQ470M6R3
CEJQ101M10
C
C
C
C
C
405
420
451
601
604
CKSRYB103K50
CCSRCH470J50
CEJQ330M10
CKSRYB103K50
CCSRCH200J50
C
C
C
C
C
605
610
611
654
801
CCSRCH200J50
CEJQ4R7M35
CKSRYB224K16
CKSRYB104K16
CKSRYB104K16
C
C
C
C
C
901
911
912
913
921
C
922
3300µF/16V
470µF/16V
330µF/16V
CCH1494
CEJQ470M10
CKSRYB103K50
CCH1331
CCH1326
CEJQ101M16
B
Unit Number : CWM8578(DEH-1550)
: CWM8579(DEH-1550B)
Unit Name
: Keyboard Unit
B
6
C
RESISTORS
R
R
R
R
R
1801
1802
1803
1804
1805
RS1/16S222J
RS1/16S222J
RS1/16S471J
RS1/16S471J
RS1/16S471J
R
R
R
R
R
1806
1807
1808
1809
1810
RS1/16S471J
RS1/16S151J
RS1/16S181J
RS1/16S181J
RS1/16S181J
R
R
R
R
R
1811
1812
1813
1814
1815
RS1/16S151J
RS1/16S181J
RS1/16S181J
RS1/16S181J
RS1/16S151J
R
R
R
R
R
1816
1816
1817
1817
1818
(DEH-1550)
(DEH-1550B)
(DEH-1550)
(DEH-1550B)
(DEH-1550)
RS1/16S151J
RS1/16S181J
RS1/16S151J
RS1/16S181J
RS1/16S151J
R
R
1818
1819
(DEH-1550B)
RS1/16S181J
RS1/16S131J
D
E
CAPACITORS
C
C
C
1801
1811
1812
C
CKSRYB103K50
CKSRYF104Z25
CKSRYF104Z25
Unit Number : CWX2708
Unit Name
: CD Core Unit(S10)
MISCELLANEOUS
IC
IC
IC
Q
D
201
301
701
101
101
IC
IC
IC
Transistor
Diode
UPD63712GC
BA5996FP
NJM2391DL1-33
2SB1132
1SS355
33
DEH-1550/XU/ES
5
A
7
8
F
1
A
2
3
=====Circuit Symbol and No.===Part Name
--- -----------------------------------------------
Part No.
-------------------------
=====Circuit Symbol and No.===Part Name
--- -----------------------------------------------
Part No.
-------------------------
D
X
S
S
S
701
201
901
902
903
Diode
Ceramic Resonator 16.934MHz
Spring Switch(HOME)
Spring Switch(CLAMP)
Spring Switch(DSCSNS)
1SR154-400
CSS1603
CSN1051
CSN1051
CSN1052
C
C
208
209
CCH1505
CKSRYB104K16
S
S
904
905
Spring Switch(12EJ)
Spring Switch(8EJ)
CSN1051
CSN1051
C
C
C
C
C
210
211
212
213
214
CKSRYB104K16
CKSRYB104K16
CKSRYB104K16
CKSRYB332K50
CKSRYB473K25
C
C
C
C
C
215
216
217
218
219
CKSRYB104K16
CKSRYB103K25
CCSRCH560J50
CCSRCH5R0C50
CKSRYB104K16
C
C
C
C
C
220
221
222
223
224
CKSRYB104K16
CKSRYB104K16
CKSRYB103K25
CCSRCH680J50
CCSRCH470J50
C
C
C
C
C
225
231
232
301
302
CKSRYB682K50
CKSRYB102K50
CKSRYB102K50
CCH1504
CCSRCH221J50
C
C
C
C
C
303
304
305
306
501
C
C
C
C
C
502
702
703
704
705
RESISTORS
B
C
D
E
F
4
R
R
R
R
R
101
102
103
104
105
RS1/10S1R5J
RS1/10S1R5J
RS1/10S1R5J
RS1/10S1R5J
RS1/10S1R5J
R
R
R
R
R
201
202
203
204
205
RS1/16S102J
RS1/16S1002D
RS1/16S1002D
RS1/16S1002D
RS1/16S1002D
R
R
R
R
R
206
207
208
209
214
RS1/16S1002D
RS1/16S1002D
RS1/16S1002D
RS1/16S1002D
RS1/16S103J
R
R
R
R
R
215
216
217
218
234
RS1/16S393J
RS1/16S122J
RS1/16S562J
RS1/16S472J
RS1/16S0R0J
R
R
R
R
R
235
236
301
302
303
RS1/16S103J
RS1/16S103J
RS1/16S183J
RS1/16S822J
RS1/16S183J
R
R
R
R
R
304
305
306
307
308
RS1/16S822J
RS1/16S183J
RS1/16S183J
RS1/16S183J
RS1/16S183J
R
R
R
R
R
501
503
505
506
507
RS1/16S102J
RS1/16S102J
RS1/16S102J
RS1/16S221J
RS1/16S221J
R
R
R
R
R
508
509
601
602
603
RS1/16S221J
RS1/16S221J
RS1/16S101J
RS1/16S101J
RS1/16S0R0J
R
R
R
901
902
903
RS1/16S104J
RS1/16S473J
RS1/16S273J
100µF/6.3V
100µF/16V
CCSRCH221J50
CKSRYB472K50
CKSRYB103K25
CKSRYB104K16
CKSRYB103K25
100µF/16V
10µF/6.3V
CKSRYB103K25
CCH1504
CKSRYB224K16
CKSRYB104K16
CCH1470
Miscellaneous Parts List
M
M
Pickup Unit(Service)(P10)
Motor Unit(SPINDLE)
Motor Unit(LOADING/CARRIAGE)
1
2
CXX1641
CXB6007
CXB8933
CAPACITORS
C
C
C
C
C
101
102
103
104
106
C
C
C
C
C
108
109
201
202
203
C
C
C
205
206
207
100µF/16V
47µF/6.3V
CKSRYB104K16
CKSRYB104K16
CCH1504
CCH1506
CCSRCH101J50
CKSRYB224K16
CKSRYB224K16
CKSRYB104K16
CKSRYB471K50
CKSRYB104K16
22µF/6.3V
CCH1507
CKSRYB103K25
CKSRYB104K16
34
DEH-1550/XU/ES
1
2
3
4
5
6
7
8
6. ADJUSTMENT
A
6.1 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.
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.
B
• Before mounting and removing filters or leads for
adjustment, be sure to turn off the regulator.
C
• 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.
D
• 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.
E
F
35
DEH-1550/XU/ES
5
6
7
8
1
A
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.
B
• 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
• Disc
• Mode
• Oscilloscope, Two L.P.F.
• E, F, REFO1
• ABEX TCD-782
• TEST MODE
CD CORE UNIT(S10)
C
L.P.F.
E
Xch
100kΩ
F
100kΩ
390pF
VREF
L.P.F.
F
E
REFO1
D
Oscilloscope
390pF
VREF
Ych
E
• Checking Procedure
1. While pressing the 4 and 6 keys at the same time, reset.
2. The display will change, returning to "81" on the fourth press.
3. 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.
4. 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".
F
36
DEH-1550/XU/ES
1
2
3
4
5
Grating waveform
6
7
8
Ech → Xch 20mV/div, AC
Fch → Ych 20mV/div, AC
0°
A
30°
B
45°
60°
C
D
75°
90°
E
F
37
DEH-1550/XU/ES
5
6
7
8
1
A
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.
B
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
ERROR–xx
C
6-digit display
ERR–xx
4-digit display
E–xx
(2) Error Code List
Displayed error code Description of the code and potential cause(s)
Code Class
Electricity Carriage Home NG
CRG can't be moved to inner diameter.
10
CRG can't be moved from inner diameter.
SERVO LSI Com→ Failure on home switch or CRG move mechanism.
munication Error
11
Electricity
Focus Servo NG
Communication error between microcomputer and SERVO LSI.
Focusing not available.
→ Stains on rear side of disc or excessive vibrations on REWRITABLE.
12
Electricity
Spindle Lock NG
Subcode NG
Spindle not locked. Sub-code is strange (not readable).
→ 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.
AGC protection doesn't work. Focus can be easily lost.
→ Damages or stains on disc, or excessive vibrations on REWRITABLE.
D
E
17
Electricity
Setup NG
30
Electricity
Search Time Out
Failed to reach target address.
→ CRG tracking error or damages on disc.
44
Electricity
ALL Skip
50
Mechanism CD On Mech Error
Skip setting for all track.
(CD-R/RW)
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.
F
38
DEH-1550/XU/ES
1
2
3
4
5
6
8
7
7. GENERAL INFORMATION
7.1 DIAGNOSIS
7.1.1 DISASSEMBLY
A
- Removing the Case (not shown)
1. Remove the Case.
- Removing the CD Mechanism Module (Fig.1)
1
CD Mechanism Module
Remove the four screws.
B
Disconnect the connector and then remove the
CD Mechanism Module.
1
1
- Removing the Grille Assy (Fig.1)
2
Release the two latches and then remove
the Grille Assy.
C
1
1
2
2
Grille Assy
Fig.1
- Removing the Tuner Amp Unit (Fig.2)
D
1
Remove the screw.
2
Remove the three screws.
3
Straight the tabs at three locations
indicated.
4
Remove the screw and then remove
the Tuner Amp Unit.
2
2
2
4
1
E
3
3
3
Tuner Amp Unit
F
Fig.2
39
DEH-1550/XU/ES
5
6
7
8
1
A
2
3
4
- How to assemble Keyboard Unit
1. Assemble them in order from "1" to "8". (See the figure below.)
2. After that, bend the crows (7 in total) until they get the right angles with the marks printed on "8".
Note) If "5" is not set collectly, defective contact may occur on "6".
To avoid this problem, hold "5" using "7" just before putting "8".
8
7
B
3
6
4
5
C
2
1
D
E
F
40
DEH-1550/XU/ES
1
2
3
4
6
5
8
7
- How to hold the Mechanical Unit
A
1. Hold the top and bottom frame.
2. Do not squeeze top frame's front portion too tight,
because it is fragile.
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
C
A
C
A
A
Carriage Mechanism
B
Damper
Lower Frame
D
C
A
Damper
B
Damper
- Removing the Guide Arm Assy
1. Remove the upper and lower frames and set the
mechanism to the clamp mode.
2. Remove the two springs.
3. Remove the two screws and bevel gear bracket.
Note that the gears come off.
4. Slide the guide arm Assy in the direction marked
with the arrow (1) and open it upwards.
5. At the angle of about 45 degrees, slide the guide Spring
arm Assy in the direction marked with the arrow
(3) to remove it.
E
3
2
1
Guide Arm Assy
Spring
F
41
DEH-1550/XU/ES
5
6
7
8
1
2
3
4
A
Bevel Gear
Bracket
B
- Removing the CD Core Unit(S10)
C
1. Apply shorting solder to the Pickup flexible cable.
Disconnect the cable.
2. Remove the solder from the four leads, and loosen
the screw.
3. Remove the CD core unit(S10).
Caution: When assembling the CD core unit(S10), set Shorting
Solder
the mechanism to the clamp mode to protect the
switches from any damage.
Solder
CD Core Unit(S10)
D
- Removing the Roller Arm Assy
E
1. Remove the guide arm Assy and set the mechanism
to the eject mode.
2. Remove the CD core unit(S10). (You do not have
to remove the solder from the four leads.)
3. Remove the spring and E-shaped ring from the
fulcrum shaft.
4. Slide the roller arm Assy in the direction marked
with an arrow.
Roller Arm Assy
E-Shaped Ring
F
42
DEH-1550/XU/ES
1
2
3
4
5
6
8
7
- Removing the Pickup Unit
A
Washer
1. Set the mechanism to the clamp mode.
2. Remove the lead wires from the inner holder.
3. Remove the two washers, styling holder, change
arm, and pickup lock arm.
4. 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.
Pickup Lock Arm
Change
Arm
Styling Holder
Feed Screw
B
Inner Holder
C
Planet Gear
D
E
F
43
DEH-1550/XU/ES
5
6
7
8
F
ANTENNA
PRE OUT
D
Pin No.
1
2
3
4
5
6
7
8
44
1
2
FR+
RR+
FRRRFL+
RL+
FLRL-
Pin No.
9
10
11
12
13
14
15
16
1 3 5 7 9 11 13 15
2 4 6 8 10 12 14 16
2
B
10A
B.REMOTE
ACC
GND
B.UP
1
3
3
4
7.1.2 CONNECTOR FUNCTION DESCRIPTION
A
C
E
DEH-1550/XU/ES
4
6
5
7
8
7.2 PARTS
7.2.1 IC
A
- Pin Functions (PE5330A)
Pin Name
Pin No.
MODEL1
1
NC
2,3
AVSS
4
NC
5,6
AVREF1
7
KYDT
8
DPDT
9
adpw
10
TUNPDI
11
TUNPDO
12
TUNPCK
13
PCL
14
TESTIN
15
XSI
16
XSO
17
XSCK
18
NC
19,20
swvdd
21
ILMPW
22
NC
23
XRST
24
XA0
25
XSTB
26
CLAMSW
27
CONT
28
LOEJ
29
CLCONT
30
NC
31
DALMON
32
VSS1
33
TELIN
34
NC
35-39
RECIEVE
40
VDCONT
41
NC
42
SYSPW
43
NC
44
PEE
45
KEY2
46
NC
47
MUTE
48
ANTPW
49
NC
50
VST
51
VDT
52
VCK
53
NC
54
TUNPCE2
55
TUNPCE1
56
NC
57-59
reset
60
LDET
61
I/O
I
O
O
I
O
O
O
I
I
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
O
O
O
O
O
O
O
I
I
Function and Operation
Model port 1
Not used
A/D GND
Not used
A/D converter reference voltage
Key data input
Display data output
A/D converter power supply output
PLL IC data input
PLL IC data output
PLL IC clock output
Clock adjustment output
Test program mode input
Serial data input
Serial data output
Serial data clock output
Not used
Keyboard unit power supply control output
Illumination power supply control output
Not used
CD LSI reset output
CD LSI identification control signal output
CD LSI strobe output
Disc clamp switch output (CD)
Servo driver power supply control output
CD load motor LOAD/EJECT direction exchange output
Driver input select output
Not used
Stand-by output
GND
Telephone mute output
Not used
Not used
VD control output
Not used
System power supply control output
Not used
Beep tone output
Key data input (Remote control)
Not used
System mute output
Antenna output
Not used
Strobe pulse output for electronic volume
Data output for electronic volume
Clock output for electronic volume
Not used
EEPROM chip enable output 2
EEPROM chip enable output 1
Not used
Reset input
PLL lock sense input
B
C
D
E
F
45
DEH-1550/XU/ES
5
6
7
8
1
A
2
Pin No.
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
B
I/O
I
I
I
I
I
Pin Name
RCK
asens
bsens
DSENS
INTRQ
VSS0
VDD1
X2
X1
IC(VPP)
NC
XT1
VDD0
AVDD
SL
TEMP
VDSENS
DISCSENS
STRKEY1
I
I
I
*PE5330A
4
Function and Operation
RDS demodulation clock input
ACC sense input
Back up sense input
Grille detach sense input
ATAPI HOST interrupt request input
GND
Power supply
Crystal oscillator connection pin
Crystal oscillator connection pin
Connect to GND
Not used
Connect to GND
Power supply
Positive power supply terminal for analog circuit
SD level input from tuner
Not used
VD power supply voltage sense input
CD DISC sense input
Key data (Remote control)
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
C
3
60
1
*S-80834CNY
20
40
41
21
D
1
2
3
OUT
VDD
VSS
E
F
46
DEH-1550/XU/ES
1
2
3
4
6
5
7
8
- 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
Pin Name
SEG4-0
COM3-0
VLCD
KST3-0
KDT0,1
REM
DPDT
NC
KYDT
MODA
X0
X1
VSS
KDT2,3
NC
KST4
NC
SEG35-13
VDD
SEG12-5
A
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
B
C
48
33
*PD6340A
32
49
D
64
1
16
17
E
F
47
DEH-1550/XU/ES
5
6
7
8
1
2
3
4
- Pin Functions(UPD63712GC)
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
A
B
C
D
E
F
Pin Name
LD
PD
PN
AVDD
DGND
RFOK
INTQ
rst
A0
stb
sck
SO
SI
DVDD
DAVDD
ROUT
DAGND
REGC
DAGND
LOUT
DAVDD
XVDD
xtal
XTAL
XGND
DVDD
C1D1
C1D2
C2D1
C2D2
C2D3
LOCK
MIRR
HOLD
PLCK
C16M
DGND
TX
EMPH
FLAG
DVDD
LIMIT
xtalen
DGND
DIN
DOUT
SCKIN
SCKO
LRCKIN
LRCK
DVDD
FD+
FDTD+
TDSD+
SDMD+
MDDGND
I/O
O
I
I
Function and Operation
Output of LD
Input of PD
Assignment of pickup polarity
Power supply for the analog system
Ground for digital circuits
Output of RFOK
Interruption signals to the external microcomputer
Input of reset
Command/Parameter discrimination signal input
Data strobe signal input
Serial data clock input
Serial data output
Serial data input
Power supply for 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
Connected to the crystal oscillator
Ground for the crystal oscillator
Power supply for digital circuits
Information on error correction
Information on error correction
Information on error correction
Information on error correction
Information on error correction
Output of LOCK
MIRR signal
HOLD signal
Output of PLCK
Output of 16.9344MHz
Ground for digital circuits
DAI output
Pre-emphasis information output
The flag for which output sound data cannot be corrected is outputted
Power supply for digital circuits
Signal is inputted when the register can be read
Permission to oscillate
Ground for 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
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
Ground for digital circuits
O
O
I
I
I
I
O
I
O
O
O
I
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
O
I
O
I
O
O
O
O
O
O
O
O
O
48
DEH-1550/XU/ES
1
2
3
4
6
5
Pin No.
61
62-66
67
68
69
70
71
72, 73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
Pin Name
TESTEN
TEST4-0
ADGND
EFM
ASY
ADVDD
RFI
EQ2, 1
RFRF2AGCO
AGCI
RFO
ATEST
C3T
AGND
A
C
B
D
F
E
VREFIN
AVDD
REFOUT
REFC
FEFEO
ADCIN
TETEO
TE2
TEC
AGND
PWMSW
I/O
I
I
7
8
A
Function and Operation
Connected to GND
Connected to GND
GND for DAC
Output of EFM signals
Input of asymmetry
Power supply for DAC
Input of RF
Equalizer 2, 1
Reversal input of RF
Reversal input of RF2
Output of RF
Input of AGC
Output of RF
Analog tests
Connection to the capacitor for detecting 3T
Ground for the analog system
Input of A
Input of C
Input of B
Input of D
Input of F
Input of E
Photo-detector input bias 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
TEST
Reversal input of TE
Output of TE
TE2
TEC
Ground for the analog system
Servo PWM mode switching
O
I
I
I
I
O
I
O
O
I
I
I
I
I
I
I
O
I
O
I
I
O
O
I
I
B
C
D
26
50
* UPD63712GC
25
51
E
75
76
100
1
F
49
DEH-1550/XU/ES
5
6
7
8
1
A
2
3
4
- Pin Functions(BA5996FP)
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
B
C
Pin Name
VR
OPIN2(+)
OPIN2(-)
OPOUT2
OPIN1(+)
OPIN1(-)
OPOUT1
GND
MUTE
POWVCC1
VO1(-)
VO1(+)
VO2(-)
VO2(+)
VO3(+)
VO3(-)
VO4(+)
VO4(-)
POWVCC2
GND
CNT
LDIN
OPOUTSL
OPINLSL
OPOUT3
OPIN3(-)
OPIN3(+)
PREVCC
Function and Operation
Input pin for reference voltage
Input pin for non-inverting input for CH2 preamplifier
Input pin for inverting input for CH2 preamplifier
Output pin for CH2 preamplifier
Input pin for non-inverting input for CH1 preamplifier
Input pin for inverting input from CH1 preamplifier
Output pin for CH1 preamplifier
Ground pin
Mute control pin
Power supply pin for CH1, CH2, and CH3 at "Power" stage
Driver CH1 - Negative output
Driver CH2 - Positive output
Driver CH2 - Negative output
Driver CH2 - Positive output
Driver CH2 - Positive output
Driver CH2 - Negative output
Driver CH4 - Positive output
Driver CH4 - Negative output
Power supply pin for CH4 at "Power" stage
Ground pin
Control pin
Loading input
Output pin for preamplifier for thread
Input pin for preamplifier for thread
CH3 preamplifier output pin
Input pin for inverting input for CH3 preamplifier
Input pin for non-inverting input for CH3 preamplifier
PreVcc
BA5996FP
14
1
15
28
D
NJM2391DL1-33
E
+-
VREF
Thermal
Shutdown
Over current
protector
1
2
3
IN
GND
OUT
F
50
DEH-1550/XU/ES
1
2
3
4
6
5
8
7
- FM/AM Tuner Unit
A
OSC
AM ANT
1
NC
NC
NC
18 19 20 21
NC
14
DO
11
NC
DI
5V
CK
SL
IC 3 EEPROM
5.0V
10 9 8
CE1
5
ROM_VDD
CE2
WC
13
IC 5
3.3V
←
7 6
LPF
FMRF
ATT
Rch
IC 1
3.3V
FM ANT
3
ATT
FMRF
ANT adj
24
B
IC 2
2.5V
Lch
MIXER, IF AMP
23
DET, FM MPX
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
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
4
VDD_3.3
DGND
12
VCC
OSCGND
2
3.3V
IC 4
3.3V 2.5V 2.5V
←
RFGND
CF51
C
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 ham 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
D
E
F
51
DEH-1550/XU/ES
5
6
7
8
1
2
3
4
DEH-1550/XU/ES
52
COMMON
SEGMENT
F
39
38
37
36
COM3
COM3
COM2
COM2
COM1
COM1
COM0
COM0
E
35
34
33
32
31
30
29
28
27
26
D
25
24
23
22
21
20
19
18
17
16
C
15
14
13
12
11
10
9
8
7
6
B
5
4
3
2
1
0
A
- LCD(CAW1733,CAW1734)
7.2.2 DISPLAY
2
1
3
4
6
5
7
8
7.3 OPERATIONAL FLOW CHART
A
Power ON
VDD1=5V
Pin 68
B
bsens
Pin 64
bsens=L
asens
Pin 63
asens=L
C
DSENS
Pin 65
DSENS=L
ADPW←H
Pin 10
Starts communication with Grille microcomputer.
D
300ms
swvdd←L
Pin 21
Source keys
operative
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.
E
Source ON
SYSPW←H
Pin 43
F
Completes power-on operation.(After that, proceed to each source operation.)
53
DEH-1550/XU/ES
5
6
7
8
1
A
2
3
4
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
CD pickup lenses
Cleaning tools
Cleaning liquid : GEM1004
Cleaning paper : GED-008
B
C
D
E
F
54
DEH-1550/XU/ES
1
2
5
6
7
8
8. OPERATIONS
A
B
C
D
E
F
55
DEH-1550/XU/ES
5
6
7
8
1
2
1
2
3
4
3
4
A
B
C
D
E
F
56
56
DEH-1550/XU/ES
5
6
7
8
A
B
C
D
E
F
57
DEH-1550/XU/ES
5
6
7
8
D
1
CXX1066
CXX1066
About the fixing screws for
the front panel.
1
2
A
B
C
E
F
58
2
DEH-1550/XU/ES
3
4
3
4
5
56
6
7
≠
+
≠
+
≠
+
25. With a 2 speaker system, do not
connect anything to the speaker leads
that are not connected to speakers.
12. Rear speaker
15. Left
14. Front speaker
12. Rear speaker
22. Green/black
21. Green
18. White/black
17. White
6. Blue/white
To system control terminal of the power amp or
Auto-antenna relay control terminal (max. 300 mA
12 V DC).
4. Fuse
24. Violet/black
23. Violet
20. Gray/black
19. Gray
8. System remote control
≠
+
≠
+
≠
+
12. Rear speaker
16. Right
14. Front speaker
13. Perform these connections when using
the optional amplifier.
12. Rear speaker
7. Power amp
(sold separately)
6
11. Black (ground)
To vehicle (metal) body.
10. Red
To electric terminal controlled by
ignition switch (12 V DC)
ON/OFF.
9. Yellow
To terminal always supplied with
power regardless of ignition
switch position.
3. Antenna jack
2. Rear output
1. This Product
5. Connecting cords with RCA
pin plugs (sold separately)
5
7
8
A
B
C
D
E
F
DEH-1550/XU/ES
8
59