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X-HM20-K
Pioneer X-HM20-K Service Manual
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36
X-HM20-K
1
2
3
4
A
B
C
D
E
F
1
2
3
4
10.7 MAIN PC
B ASSY (7/7)
1
V
7
CD Section
1
LPWR
2
EXTF
3
MO
N
ITOR
4
SE
N
SE
5
V
SSSA1
6
IREF
7
V
DDA1
8
V
RFO
9
D1
10
D2
11
D3
12
D4
13
R1
14
R2
15
CEQ
16
V
DDA2
17
V
SSA2
1
8
OSCO
19
OSCI
20
V
SSA3
60
SBSY
59
SFSY
5
8
SUB
57
RCK
56
STATUS
55
SILD
54
RAB
53
SCL
52
SDA
51
RESET
50
CLK12
49
CLK16
4
8
SCLK
47
WCLK
46
DATA
45
EF
44
SCLI
43
WCLI
42
SDI
41
V
DDD
61
V
SD2
62
DOBM
63
V
DD1
64
RA
65
FO
66
SL
67
MOTO1
6
8
MOTO2
69
V
SD3
70
V
DD2
71
V
1
72
V
2
73
V
3
74
V
4
75
V
5
76
TEST1
77
TEST2
7
8
TEST3
79
TEST4
8
0
LASE
40
V
SSD
39
CFLG
3
8
CCLK
37
CDAT
36
CRDY
35
RKILL
34
LKILL
33
BUG
N
D
32
BUIL
31
BUOL
30
BUOR
29
BUIR
2
8
BU
V
P
27
DA
V
P
26
DALP
25
DAL
N
24
DAREF
23
DAR
N
22
DARP
21
DACG
N
D
U5
SAA7
8
24HL
FB15
121
L3
100
u
H/1A
C91
104P
C105
104P
C106
104P
R37
3K3
R95
5K1
C107
2.2nF
C10
8
104P
R39
3K9
R107
3K9
C109
2.2nF
C110
104P
C111
104P
R40
2K7
R79
8
K2
R
8
7
2R2
R9
4K7
C112
104P
C113
104P
R135
15K
R136
1
8
R
C114
104P
C115
104P
R129
2R2
C1
R91
24K
R92
10R
C119
104P
R12
8
C122
104P
R133
Q2
3904
R102
47R
R105
47R
R106
47R
C125
104P
R146
5K1
R147
8
K2
C52
47
u
F
R120
1
2
8
27
26
25
24
23
22
21
20
19
1
8
17
16
15
30
R
8
0
10K
R
8
3
10K
Y5
16.9344MHZ
C61
20P
C76
20P
R74
100R
C69
220
u
F
C149
220
u
F
MD
V
CC1
B
A
C
D
F
E
SE_CLK
3
V
3_CDA
3
V
3_CDD
3
V
3_CDD
V
B
HW_SCL
HW_SDA
SE_RESET
OTHER_3
V
3
3
V
3_CDA
CD_3
V
3
3
V
3_CDD
3
V
3_CDA
3
V
SE_BCLK
SE_LRCK
SE_DATA
SE_EF/C
V
BS_IPOD
V
REF
RA
FO
SL
MOTOR2
SE_CFLG/D
V
D_TRI
N
RADIAL
SLEDGE
SL-
SL+
RAD-
RAD+
+6
V
5
V
CC
V
REF
D
V
D_DATA
D
V
D_LRCK
D
V
D_BCLK
OTHER_3
V
3
A
7/7
MAIN PCB ASSY
(X-HM20: 92L36100201011)
(X-HM10: 92L36100101011)
A
7/7
35
37
Table of Contents
Safety Information
2
Table of Contents
3
Service Precautions
4
Notes on Soldering
4
When Replacing CD Mecha Unit
4
Specifications
5
Basic Items for Service
6
Pcb Locations
6
Jigs List
7
Block Diagram
8
Overall Wiring Diagram
8
Overall Block Diagram
10
Diagnosis
11
Troubleshooting
11
Protection Circuit
12
Service Mode
12
Disassembly
13
Each Setting and Adjustment
19
Updating of the Firmware
19
Exploded Views and Parts List
20
Packing Section
20
Exterior Section
22
Schematic Diagram
24
Main Pcb Assy (1/7)
24
Main Pcb Assy (2/7)
26
Main Pcb Assy (3/7)
28
Main Pcb Assy (4/7)
30
Main Pcb Assy (5/7)
32
Main Pcb Assy (6/7)
34
Main Pcb Assy (7/7)
36
Ipod PCB ASSY (X-HM20 ONLY)
38
Radio Pcb Assy
40
Display Pcb Assy
42
Key-Switch Pcb Assy
44
Headphone Pcb Assy
45
Power Pcb Assy
46
Usb Pcb Assy
48
Pcb Connection Diagram
50
MAIN and Ipod PCB ASSYS
50
DISPLAY and KEY-SWITCH PCB ASSYS
54
Radio Pcb Assy
56
HEADPHONE and USB PCB ASSYS
57
Power Pcb Assy
58
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Operating Instructions
184 pages
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Pioneer X-HM20-K Specifications
General
Brand
Pioneer
Model
X-HM20-K
Category
Car Receiver
Language
English
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