Service manual

UX-A260U
TEL/LIU PWB circuit
3/3
NOTE:
This mark indicates a safety-critical part(s).
5 5
4 4
3 3
2 2
1 1
D D C C B B A A
DG
DG
DG DG
DG
DG
DG
DG
+24VL
+24VL
+24VL
+24VA
HSDG
DG
+24VA
DG
Vref_B
Vref_A
Vref_A
DG
DG
DG
CNLIUA-3
CNLIUA-13
CNLIUA-2
CNLIUA-11
CNLIUA-1
CNLIUA-10
CNLIUA-9
CNLIUA-12
CNLIUA-16
HS-
DPMUTE
CML
RHS-
+24VL
FILM
Ci
DG
PIN
N.M.
Q100
BC
E
C102
N.M.
C106
1000p
C121
Vref A
PC3B
PC814X
43
D3
1N4148
R112
0
PC2B
N.M.
43
SW1
HOOK SW
3
1
2
PC4B
PC817X4
43
+
C3
N.M.
PH1
SG206S
R101(2125/1608)
C103
0.1u (2125&1608)
C115
0.1u (2125&1608)
+
C1
22u/50V
PC1B
21
IC101
HA17324A
411
R1
1.2k(1W)
D1
14148
C101
0.1u (2125&1608)
+
C2
100u/50V
Q102
RT1N436
BC
E
R124
TP1
JP
PH2
SG206S
REG1
NJM78L 05A
Vout
1
GND
2
Vin
3
R2
100(1/2W)
C105
1000p
TP2
JP
CML(3/3)
A5X-24E-908
6 – 11