Service manual

UX-B20U/UX-B20C/B25C
6 – 11
[2] LIU PWB circuit
1. LIU PWB Circuit (1/3)
5 5
4 4
3 3
2 2
1 1
D D C C B B A A
Vref A
ARG
DG
CNLNJ-5
CNTLJ-4
IN/OUT
CNLNJ-4
CNTLJ-3
CNLNJ-3
CNLNJ-2
EX-T2
L1
T2
EX-T1
T1
L2
R8
51(1W)
R14
22k(1/2W)
L7
N.M.
L8
JP(12.5mm)
JP8
JP
ZD2
HZ2C1
CML1A
A5X-G-24E-908 CM
B
C103
1000p
R5
L4
N.M.
Q1
G
DS
PC4A
R3
R120
100
D2
1N4148
PC1A
21
L3
N.M.
N.M.
C14
N.M.
R6
22k(1/4W)
AR1
RA-391P-V6-2
T1
I2164
R1
+
C1
C6
0.01u
+
C7
22u/50V
PC2B
43
L5
ZD9
C13
JP6
JP
PC3A
PS2501A-1
21
R103
ZD5
C4
N.M.
N.M.
N.M.
N.M.
N.M.
ZD8
JP
R15
JP(1/4W)
R2
R135
L6
N.M.
R102
ZD10
R101
ZD1
AR2
N.M.
ZD3
HZ2C1
VA1
C118
Ð
+
RE
~ ~
C1
AR3
RA501P-C6
C119
JP5
C5
0.82u/250V
JP4
JP7
JP
ZD7
HZ27-1
R13
JP(12.5mm)
R7
JP1
LIU PWB Circuit
1/3
NOTE:
This mark indicates a safety-critical part(s).