Icom IC-M91D Service Manual Addendum page 24

• D/A CONVERTER (MAIN UNIT: IC190)
PIN LINE
No. NAME
2 VOL AF output level adjustment. (RX signal)
3 FCON Reference frequency adjustment.
11 SQL Noise squelch level adjustment.
14 MSENS MIC sensitivity adjustment.
• While receiving:
Tuned BPF tuning.
15 T1CON
• While transmitting:
TX output power adjustment.
DESCRIPTION
4 - 5