Service manual

UX-A1000U
5 – 14
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 and external telephone is in the on-hook state.
L: The handset and external telephone is in the off-hook state.
[Signals for status recognition according to input signals]
Signal Name Function
TEL IN Receiving signal from line or modem
SPOUT Speaker output signal
TXOUT
Transmission (DTMF) analog signal output
from modem
RXIN
Reception (DTMF, others) analog signal
input
into modem
TEL OUT Voice input to Modem from handset
[Other signals]
(Example: SENDING/RECEIVING)
: FAX SENDING/RECEIVING
DAC
LPF
DAC
H
L
CI DETECTOR
HS
DETECTOR
SPEAKER
LINE
EXIT
+24VL
DG
CONTROL PWBTEL/LIU PWB
RX
TX
TEL MUTE
(H:MUTE)
Q102
IC101B
Q103
IC101D
IC101C
IC101A
IC8
IC3
0,1
0,0
1,0
1,1
RTLOOP
ADC
SIN
MIC
/LINE
SELECT
SP OUT
ENABLE
MIC ENABLE
(20438 I/A)
LINE IN ENABLE
LINE OUT ENABLE
0,20,25,30dB
LINE
SELECT
1,1
0,0
1,0
0,+4dB
SOUT
HS
SPKRP
MICP
LINEIN
LINE
OUT
MUTE,0,-6,-12dB
IC16 SCE214V
FAX CONTROLLER
DTMFMUTE
RCVOL
SP MUTE
TEL MUTE
CI
CML
MIC MUTE
VOL-A
VOL-B
VOL-C
SPOUT
BZOUT1
SP MUTE
TEL IN
RXIN
TXOUT
MIC MUTE
(H:MUTE)
CML
SIGTX
SIGRX
TELOUT
0,6dB
HANDASET
Fig. 8
NO Signal Name (CNLIUA)
1 +24V
2DG
3 MICMUTE
4 TELIN
5
TELMUTE
6 RXIN
NO Signal Name (CNLIUA)
7 TELOUT
8 TXOUT
9
CML
10 CI
11
HS-
12
RHS-
VOLUME SETTING
LINEOUT A RCVOL DTME VOL A VOL B VOL C
(HIGH) (LOW) MUTE
Receiver volume setting Low 1 1
Middle 1 0
High 0 0
DTMF Transmission Fixed 1 1
volume setting (Receiver)
Key buzzer volume setting Fixed 0 1 1
Speaker volume setting Level1 0 1 1
Level2 0 0 1
Level3 1 1 0
Level4 0 1 0
Level5 1 0 0
Ringer volume setting Low 1 1 1
Middle 0 0 1
High 0 0 0
DTMF speaker volume Level1 1 0 1
setting Level2 1 0 1
Level3 1 0 1
Level4 1 0 1
Level5 1 0 1
OGM playback speaker Level1 0 0 1
volume setting Level2 1 1 0
Level3 0 1 0
Level4 1 0 0
Level5 0 0 0
ICM record speaker Level1 0 0 1
volume setting Level2 1 1 0
Level3 0 1 0
Level4 1 0 0
Level5 0 0 0