Icom IC-M604 - PLL Adjustments

• MAIN UNIT TOP VIEW
Lock voltage
adjustment for TX
L73
Lock voltage
check point for RX
CP1
Lock voltage
check point for TX
CP2
Lock voltage
adjustment for RX
L62
5-2 PLL ADJUSTMENTS
LOCK
VOLTAGE
ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITION
MEASUREMENT
VALUE
POINT
UNIT LOCATION UNIT ADJUST
1
2
3
• Operating channel : ch P2
• Receiving
• Operating channel : ch P2
• Output power : Low
• Transmitting
• Operating channel : ch 70
• Receiving
MAIN Connect a digital
multi-meter or oscil-
loscope to check
point CP1.
Connect a digital
multi-meter or oscil-
loscope to check
point CP2.
3.8 V – 4.0 V
3.1 V – 3.3 V
2.4–3.7 V
MAIN L62
L73
Verify
5 - 2