Sharp UX-370SE Service Manual page 59

[Signals for status recognition according to input signals]
Signal Name
H:The handset is in the on-hook state.
RHS
L: The handset is in the off-hook state.
CI Incoming call (CI) detection signal
H:Recording paper does not exist.
P-E L: Recording paper is set (exists).
(Detection of recording paper in printing state)
H:Recording paper does not exist in case of
printing.
P-IN
L: Recording paper exists in case of printing.
(Detection of recording paper in printing state)
[Other signals]
Signal Name
Transmission (DTMF) analog signal output
TXOUT
from modem
Reception (DTMF, others) analog signal input
RXIN
into modem
(Example: TEL speaking)
SURGE LINE
TEL
PROTECTION FILTER
LINE
BLOCK BLOCK
EXT.
CI DETECTOR
SPEAKER
Function
Function
POLARITY
DIAL PULSE
ON-HOOK
GUARD
GENERATION
BLOCK
BLOCK
BLOCK
DIAL
CONTROL
BLOCK
HANDSET
VOL A
DP ON
CI
RHS
NO Signal Name (CNLIUA)
1
2
3
4
5
6
NO Signal Name (CNLIUB)
1
2
3 SIGMUTE/TXMUTE
TEL/LIU PWB
CML
SPEECH
CIRCUIT
BLOCK
RX MUTE
VOL B
VOL C
BZCONT
0
1
+5V
+24VA
DG
Fig. 6
5 – 13
NO Signal Name (CNLIUA)
TELMUTE 7
8
CI/CIDIN1
CIDIN2/HS 9
10
P-E
11
P-IN
12
RHS
NO Signal Name (CNLIUB)
EXTSIG 4
5
RLYCNT
6
CONTROL PWB
TXOUT
0
RXIN
1
GAIN-C
RX MUTE
BZCONT
SP MUTE
DP ON
UX-370ES/SE/F
FO-780AT/ES
RXIN
TXOUT
CML
+5V
DG
+24VA
DPON
DPMUTE
E-RLY
SIGTX
MODEM
(R96DFXL-CID)
SIGRX
CML
FC100M
CI
RHS