1505 Audio Line Driver
Service Manual
1505 MIXER/ LINE DRIVER
CH 1
CH 2
CH 3 MUTE
CH 4
SPKR
PTT
HANDSET
MIC
SPEAKER
CH 1
CH 2
CH 3 
CH 4
CH 1 
CH 2
CH 3
Tx
Rx
CH 4
LEVEL ADJUST
Service Manual
1505 MIXER/ LINE DRIVER
CH 1
CH 2
CH 3 MUTE
CH 4
SPKR
PTT
HANDSET
MIC
SPEAKER
CH 1
CH 2
CH 3 CH 4
CH 1 CH 2
CH 3
Tx
Rx
CH 4
LEVEL ADJUST
