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5
CN1831
NM
8.1V
NM
DD8
FAN
(1.0A)
Q1831
P1831
4
3
1
2
4
3
5
2
R1832
5
2
6
1
6
1
NM
NM
NM
BUP_1
DABSX12
GNDFAN
Q1902
LTC014EEB
GNDD
>
Q1951
3
SFT1342
S
8.1V
1
DD8
G
D
L1951
2
CTH1446-A
R1968
10uH
510
1000p/50
R1967
10k
(D)
R1951
NM
>
D2132
NM
R2132
120
R2133
22
Q2132
LTC014EEB
GNDD
SERVICE UNIT(MOTHER I/F)
Consists of
MOTHER PCB
INTERFACE PCB
5
6
CHIP SIZE LEGEND
1801 - : VDD33
1608
1821 - : SYS+B
2125
1851 - : EV12
3216
1901 - : TUN
1951 - : DDC 5/8
BUP_1
SYS+B
IC1821
NJM2387ADL3
9.0V
SYS+B
SYB
R1821
GNDA
NM
DDC 5/8
IC1951
AN33012UA
1
24
VCC
VCC_S2
2
23
VCC_S1
RS2
3
22
RS1
HSD2
HSD1
C1970 0.1u/16
4
21
HSD1
SS2
C1969
5 SS1
20
GNDD
PGND
C1955
R1964
0.1u/16
6 COMP1
19
COMP2
0.01u/16
4.7k
7 FB1
18
FB2
C1956
8 EN1
17
VREG
9 EN2
16
SGND
10 CT
15
RT
11 TL_CTRL
14
TL
12 FLAG
13
SYNC
200k
R1960
R1961
390k
365.8/413.9kHz
DDC33
3.3V
DDC33
DDC33
L2101
CTH1524-A
10u
C2103
GNDD
NM
R2101
R2102
3.6k
47k
(D)
(D)
6
A
2001 - : SOC
2051 - : BT
2101 - : DDC33
2161 - : USB5
VDD33
IC1801
NJW4181U3-33B
3.3V
VDD33
BUP_1
VD33
VDIN
D1801
1SR154-400
GNDD
DDIN
L1953
P1952
CTH1486-A
1
2
10uH
NM
Slow Blow Fuse
(4.5A)
GNDD
Q1952
3 S
SFT1342
1
G
D
2
C1952
R1956
L1952
12k
0.01u/16
C1951
R1952
CTH1519-A
15u
470p/50
560
R1953
33k
(D)
GNDD
GNDD
IC2101
1
8
LX
VCC
C2106
2
7
9
GND
BST
0.01u/16
3
6
VC
EN
FIN
4
5
FB
SYNC
BD9876EFJ
GNDD
365.8/413.9kHz
GNDD
A AVH-X4500BT/XNUC
The > mark found on some component parts indicates
B AVH-X4500DVD/XNUW5
the importance of the safety factor of the part.
C AVH-X4550DVD/XNRC
D AVH-X4550DVD/XNRD
Therefore, when replacing, be sure to use parts of
E AVH-X4550DVD/XNRI
identical designation.
F AVH-X4590DVD/XNID
AVH-X4500BT/XNUC
7
4/6
MOTHER PCB
(POWER SUPPLY BLOCK)
PWR-I/O BUS
PWR-SH BUS
PWR-SYS BUS
D1953
RSX201L-30
D1954
RSX201L-30
5.2V
DD5
R1969
NM
R2105
0
7
8
A
A
5/6
A
3/6
A
2/6
B
C
D
E
F
A
4/6
131
8
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