Frequency Adjustment - Icom IC-A210 Service Manual

4-2 FREQUENCY ADJUSTMENT

Select an adjustment item using [↑] / [↓] keys, then set to the specifi ed value using [←] / [→] keys on the connected PC's keyboard.
ADJUSTMENT ADJUSTMENT CONDITION
VDD 1 • CH No. : [AM MID]
Voltage • Receiving
(RX)
Lock Voltage 1 • CH No. : [AM HIGH]
(RX) • Receiving
(TX) 2 • CH No. : [AM HIGH]
• Transmitting
Lock Voltage 1 • CH No. : [AM LOW]
Verify • Receiving
(RX)
(TX) 2 • CH No. : [AM LOW]
• Transmitting
Reference 1 • CH No. : [AM HIGH]
Frequency • Connect an RF Power Meter to
the antenna connector.
• Transmitting
• VDD volatage (RX and TX) adjustments
IC-A210 (TOP VIEW)
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Connect a Digital voltmeter to the CP2
on the MAIN UNIT.
Connect a Digital voltmeter to the CP1
on the MAIN UNIT.
Connect a Digital voltmeter to the CP1
on the MAIN UNIT.
Loose couple an Frequency Counter
to the antenna connector.
4 - 3
ADJUSTMENT
OPERATION
(CS-A210 ADJ)
(CS-A210 ADJ)
VDD voltage (RX and TX) check point
CP2
• Lock volatge adjustment
IC-A210 (TOP VIEW)
VALUE
ITEM/POINT
[F13] 13.4–13.6
V
C136
(MAIN UNIT)
3.4–3.6 V
C127
(MAIN UNIT)
More than
(Verify)
0.5 V
[F1]
136.975 MHz
Lock voltage (TX)
adjust point
C127
Lock voltage (RX)
adjust point
C136