Service manual

UX-340L/UX-345L
UX-330L
(Example: TEL speaking)
NO Signal Name (CNLIU)
1 TELOUT
2 TELIN
3 TELMUTE
4CI
5
HS
6 P-E
7 P-IN
Fig. 6
Signal Name Function
RHS
H:The handset is in the on-hook state.
L: The handset is in the off-hook state.
CI Incoming call (CI) detection signal
HS
H:The handset or external telephone is in the
on-hook state.
L: The handset or external telephone is in the
off-hook state.
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)
[Signals for status recognition according to input signals]
Signal Name Function
TEL IN Receiving signal from line or modem
TEL OUT Transfer signal to line
SPOUT Speaker output signal
TXOUT
Transmission (DTMF) analog signal output
from modem
RXIN
Reception (DTMF, others) analog signal
input
into modem
[Other signals]
5 – 10
NO Signal Name (CNLIU)
8 RHS
9 RXIN
10 TXOUT
11 CML
12
+5V
13
DG
14
+24V
CONTROL PWBTEL/LIU PWB
RC VOL
H
L
TX OUT
RX IN
1
0
0
1
HS DETECTOR
CI DETECTOR
SIGTX
SIGRX
CML GAIN-C
TX CONT
MODEM
(R96DFXL-CID)
VOL B VOL A
TEL IN
TEL OUT
0
1
SP AMP
SP OUT
VOL B
VOL A
BZ CONT
SP MUTE
TEL MUTE
CI
HS
BZOUT
GAIN-C
TXCONT
CML
FC100M
HL
CML
TEL
LINE
EXT.
HANDSET
SPEAKER