Oki B 4100 Maintenance Manual page 448

CN2 (1/2)
TEL1
TEL2
CN2 (2/2)
SR
8
CN1
LINE
AR , AR
1 2
arresters
1
IC
2
F
OFF HOOK Detector
D
IC1
Ring Detector
RL
2
C
C31 R5
CML C4
7
RL DP RL3
1
B
R ,
10 11
4
E
5
T
1
Impedance
matching
NT
PP
R , R
574
RL6
Receiving
A
Sensitivity
Adj
6
CN3
02
RI
S
504
to Modem
Rp
R