Icom IC F121S Stereo System User Manual


 
LV
PLL lock voltage
check point
C133
PLL lock voltage
adjustment for TX
C134
PLL lock voltage
adjustment for RX
DC power supply
13.2 V / 15 A
5 - 4
5-2 PLL ADJUSTMENT
PLL LOCK
VOLTAGE
1
2
3
4
Operating freq. : 174.000 MHz
Receiving
Output power : Low1
Transmitting
Operating freq. : 136.000 MHz
Receiving
Output power : Low1
Transmitting
MAIN Connect a digital multi-
meter or an oscillo-
scope to the check
point, LV.
3.5 V
3.5 V
0.91.5 V
1.01.6 V
MAIN C134
C133
Verify
ADJUSTMENT ADJUSTMENT CONDITIONS
UNIT LOCATION
VALUE
UNIT ADJUST
MEASUREMENT ADJUSTMENT