Icom IC-A210 Service Manual page 6

July 2019
The underlined parts have been updated from the previous version of the addendum, or the original page.
4-2 FREQUENCY ADJUSTMENT
1) Select an adjustment item using the mouse cursor or [↑]/[↓] on the PC's keyboard.
2) Set or modify the adjustment value as specified using [←]/[→] on the PC's keyboard, and then push [ENTER].
ADJUSTMENT
VDD VOLTAGE
1 • CH No.: [AM Mid]
~Adjustment~ • Receiving
(RX)
LOCK VOLTAGE 1 • CH No.: [AM High]
~Adjustment~ • Receiving
(RX)
(TX) 2 • CH No.: [AM High]
• Transmitting
~Verification~ 3 • CH No.: [AM Low]
(RX) • Receiving
(TX) 4 • CH No.: [AM Low]
• Transmitting
REFERENCE
1 • CH No.: [AM High]
FREQUENCY • Transmitting
~Adjustment~
2 • Receiving
†
For only IC-A220.
†
• VDD voltage (RX) check point
(TOP VIEW)
• Lock voltage (RX and TX) adjustments
(TOP VIEW)
(Replacement page)
ADJUSTMENT SETUP OPERATION
• Connect the 13.8 V power
source to the transceiver.
• Connect the digital voltmeter
to the CP2 on the MAIN unit.
Connect the digital voltmeter
to the CP1 on the MAIN unit.
• Connect the RF power
meter or 50 Ω dummy load
to the antenna connector.
• Loose couple the frequency
counter to the antenna
connector.
‒
CP2
VDD voltage check point
4-3g
ADJUSTMENT
VALUE
ITEM/POINT
[F13] 13.5 V (±0.1 V)
(Adjustment screen)
C136 3.5 V (±0.1 V)
(MAIN unit)
C127
(MAIN unit)
‒ More than
0.5 V
[F1] 136.975 MHz
(Adjustment screen) (±100 Hz)
[F25] Enter the
(Adjustment screen) same
adjustment
value of the
CP1
PLL Lock voltage
check point
C127
PLL Lock voltage (TX)
adjustment
C136
PLL Lock voltage (RX)
adjustment
[F1].