Toshiba DP120F Service Manual page 398

The monitoring signal volume-controlled by IC14 is amplified by the OP amplifier (IC15) and
output to the speaker.
Signal Name Type
MONISEL O
TONESEL O
RING/TONE O
SPVOL0-2 O
March 2000 © TOSHIBA TEC
Active
H Line Monitoring Select Signal
H Line/Tone Select Signal
H Ring/Tone Select Signal
H Speaker Volume Control Signals 0-2
Description
7-89
Destination
IC8
IC8
IC8
IC14
DP120F/DP125F Circuit Description