Pll Adjustment - Icom IC-F410 Service Manual

5-2 PLL ADJUSTMENT

ADJUSTMENT ADJUSTMENT CONDITION
PLL LOCK 1 • Operating frequency: (Ch1)
VOLTAGE [L-band]
[ML-band]
[ML-band]
[MH-band]
[H-band]
• Receiving
2 • Power selection
• Transmitting
3 • Operating frequency: (Ch2)
[L-band]
[ML-band]
[MH-band]
[H-band]
[H-band]
• Receiving
4 • Power selection
• Transmitting
CP1
PLL lock voltage
check point
UNIT
MAIN
: 400.00000 MHz
∏ : 440.00000 MHz
Ò : 450.00000 MHz
: 470.00000 MHz
: 490.00000 MHz
: Low1
: 430.00000 MHz
: 470.00000 MHz
: 490.00000 MHz
∏ : 520.00000 MHz
: 512.00000 MHz
Ò
: Low1
DC power supply
13.2 (13.6) V / 15 A
MEASUREMENT
LOCATION
Connect a digital 1.5 V
multi-meter or oscil-
loscope to the
check point CP1.
1.5 V
3.5–5.5 V
5 - 3
ADJUSTMENT
POINT
VALUE
UNIT ADJUST
MAIN
L23
PLL lock voltage
adjustment for TX
L26
PLL lock voltage
adjustment for RX
L23
L26
Verify