Pll Adjustment - Icom IC-F11 Service Manual

5-2 PLL ADJUSTMENT

ADJUSTMENT ADJUSTMENT CONDITIONS
PLL LOCK 1 • Operating frequency
VOLTAGE
• Receiving
2 • Transmitting
A: [F21], [F21S], [F22] and [F22S], B: [F21BR], C: [F21GM], D: [F22SR]
UNIT
: MAIN Connect a digital multi
A
440.000 MHz
B C
462.550 MHz ,
446.00625 MHz D
TOP VIEW
5 - 4
MEASUREMENT
LOCATION
meter to check point
LV.
C54
PLL lock voltage adjustment (RX)
C68
PLL lock voltage adjustment (TX)
LV
PLL lock voltage check point
ADJUSTMENT
VALUE
UNIT ADJUST
1.3 V A – C MAIN C54
D
1.8 V
A C
1.3 V – C68
D
1.8 V
RF power meter