Sharp FO-475TH - Manual (Page 62)

6 – 9
UX-258TH
FO-475TH
[2] TEL/LIU PWB circuit
1 2 6 4 3 5
BD
E
F
G
I
H
C
A
1 2 6 4 3 5
BD
E
F
G
I
H
C
A
– +
– +
– +
N.M.
N.M.
VREF
+24V
MJ1-3
C
B M
MJ1-4 MJ2-3 MJ2-4
TIP RING EXT-T EXT-R
C7
4.7/50
R22 3.3K
T1
2128
C8
0.033
ZD5
HZ2C1
ZD4
HZ2C1
IC1 2904
L2
R21 620
C5 0.01
D4
1SS270
C15
1000P
C17 220P
7
6
R7 JP
D2
1SS270
Q2
2SC1815
+5V
L1
+5V
R13 1.5K
IC1 2904
B
B
C
Q1
DTC114
E
C12 4.7/50
R2 150
CML
Q3
DTC114
D3
1SS270
+5V
C19 0.022
C2 1.5
R6 43K R5
22K (1/2W)
R19 15K
CNLIU-8
TXOUT
C11
4.7/50
R17 10K
C4
2200P
2 3
1
R16 10K
R10 10K
R9 10K C3
2200P
VREF
CNLIU-7
RX IN
ZD3 HZ27
PC2
TLP521-1
CNLIU-9
CML
B
E
CNLIU-11
IC1 2904
8 4
MJTEL-1
TX
C14
4.7/50
R11 1.5K
L6
MJTEL-4
TX
MJTEL-3
RX
C1
2200P
CNLIU-1
TELOUT
5
C16
1000P
R12 1K
C13
0.47/50
R15 3.3K
R14 36K
C18
1500P
L7
N2024
MJTEL-2
RX
D1
1SS270
E
R1
CNLIU-3
TEL MUTE
N.M.
CNLIU-10 CNLIU-12
+24V +5V
VA1 VA2
R8 JP
C20 N.M.
R20
VREF
CNLIU-2
TELIN
C9
1000P
HS
CNLIU-5
HOOK SW
CNLIU-6
RHS
R4 91 R3 30 ZD2
HZ2C1
ZD1
HZ2C1 PC1
PC814X
L4 L5
CML
C10
1000P
PC2
TLP521-1
CI
CNLIU-4
PC1
PC814
VREF
R18 1K
R23 1K
C21
C6
22/50
L3
DG
4 3 4 3
4
2
3
1
Q
AR1
RA391PV62
ERZV5D471x2
N.M. N.M.
N.M. N.M.
ARG
N.M.
N.M.
NOTE:
These marks are all safety-critical parts.