Service manual

FO-IS125N
6 – 21
[4] Operation Panel/Hook Switch PWB circuit
1. Operation Panel/Hook Switch PWB circuit (1/2)
A A
B B
C C
D D
E E
F F
G G
H H
6 6 5
5
4 4 3 3 2 2 1 1
DG
DG
+3.3V
+3.3V
ADG
+3.3V
+3.3V
ADG
ADG
KEN0 KEN1 KEN2
/SEN4 /SEN3 /SEN2 /SEN1 /SEN0
ORGSNS FRSNS
/SEN5 /SEN6
nRHS
TELIN
TELOUT
nRHS
KEN3
TELIN TELOUT
DECODER
SCAN TO
HOLDER
SPEAKER
SECURE Shift Start
SCANTO EMAIL
*
74
1
0Function
UP
258
DOWN
Reception
#
Resolution
369
RELEASE
>(right)
ET
Y
I
SYMBOL
Q
WRO
U
D
GH
K
Caps Lock
ASF
LJ
Stop
ORGSNS FRSNS
<(left)
HOOK DETECT
HOOK SW HANDSET MJ PWB
HOLD
SPEED DIAL
~/^
//\
INFO DUPLEXB'CASTDEL
Space
M
.com
V
;/:
P
X
COPY
@
N
B
REDIAL
C
Caps Lock
GLOBAL
ADDRESS
SW1
1 2
SW31
C22 N.M.
1 2
SW9
1 2
SW18
1 2
SW64
1 2
SW37
1 2
SW69
1 2
SW21
1 2
SW54
1 2
SW27
1 2
SW62
1 2
SW60
1 2
SW11
1 2
SW6_1
1 2
SW44
1 2
SW17
1 2
SW52
1 2
SW50
1 2
SW22
1 2
SW60_2
1 2
L4
N.M. (R-5C)
1 2
SW34
1 2
SW68
1 2
L5
N.M. (R-5C)
1 2
SW42
1 2
SW61
1 2
SW2_1
1 2
SW63
1 2
L2
0 (1608)
1 2
SW24
1 2
SW12
1 2
L3
0 (1608)
1 2
SW32
C6 0.1u
1 2
SW40
1 2
SW21
2 1
4 3
PH2 1S094
1 2
SW65
1 2
SW53
R16
1K(1608)
1 2
L6
N.M. (R-5C)
1 2
SW14
1 2
SW67_2
1 2
SW59
1 2 3 4 5
CNTEL
A2001WV2-5P
1 2
SW20
C2 N.M.
1 2
SW55
1 2
SW43
1 2
SW7
C3 N.M.
1 2
SW4
1 2
SW49
C4 N.M.
1 2
SW45
1 2
SW33
C1 N.M.
1 2
SW16
1 2
SW39
Y0
1
Y1
2
Y2
3
Y3
4
Y4
5
Y5
6
Y6
7
Y7
9
Y8
10
Y9
11
A
15
B
14
C
13
D
12
VCC
16
GND
8
IC1
HC42(LS145)
R9
100(2125)
1 2
SW35
1 2
SW1_1
1 2
SW23
1 2
SW26
C23 N.M.
C25 0.1u
1 2
SW70
1 2
SW8
1 2
SW29
1 2
SW3_1
R1
10K(1608)
1 2
SW66
1 2
SW25
1 2
SW58
1 2
SW13
1 2
SW10
1 2
SW56
1 2
SW19
1 2
SW30
C5
N.M.(33uF/16V)
+
1 2
SW48
1 2
SW15
1 2
L1
0 (1608)
1 2
SW67_1
R10
120(2125)
1 2
SW1_2
1 2
SW46
1 2
SW5
1 2
SW51
1 2 3 4
CNHJ
4pin
1 2
SW2_2
1 2
SW38
1 2
SW57
1 2
SW3_2
1 2
SW36
1 2
SW41
C24 N.M.
1 2
SW6_2
1 2
SW28
1 2
SW47
C21 N.M.
2 1
4 3
PH1 SG206S
Z
Operation Panel/Hook Switch PWB Circuit
Note: Since the parts of PWB cannot be supplied, change it as a unit.
1/2