Pll Adjustment For Ic-F3/S - Icom IC-F3 Service Manual

5-2 PLL ADJUSTMENT for IC-F3/S

ADJUSTMENT ADJUSTMENT CONDITIONS
PLL LOCK 1 • Operating freq. :
VOLTAGE
• Transmitting
2 • Receiving
• MAIN unit
RF power meter
L11
PLL lock voltage
adjustment
CP1
PLL lock voltage
check point
150.000 MHz (L-band)
174.000 MHz (H-band)
MEASUREMENT
UNIT LOCATION
MAIN Connect a multi-meter
to check point CP1.
see detailed illustration
below
VR board
5 - 3
ADJUSTMENT
VALUE
UNIT ADJUST
3.0 V (L-band) MAIN
4.3 V (H-band)
2.2–3.2 V Verify
(L-band)
3.1–4.1 V
(H-band)
,
DC power supply
.
Power supply connection
connect (soldering)
, line here
L11