Receive Adjustment - Icom IC-A210 Service Manual

4-4 RECEIVE 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
RX Tuning 1 • CH No. : [AM LOW]
Voltage • Receiving
RX BPF 1 • Connect a Standard Signal
(AM) Generator (SSG) to the
antenna connector.
2 • CH No. : [AM LOW]
• Receiving
3 • CH No. : [AM LOW]
• Set the SSG as;
Frequency
• Receiving
4 • CH No. : [AM LOW]
• Set the SSG as;
Frequency
• Receiving
RX BPF 1 • Connect a Standard Signal
(FM) Generator (SSG) to the
antenna connector.
2 • CH No. : [FM LOW]
• Receiving
3 • CH No. : [FM HIGH]
• Receiving
SQUELCH 1 • Connect a Standard Signal
(AM) Generator (SSG) to the
antenna connector.
2 • CH No. : [AM MID]
• Receiving
SQUELCH 1 • Connect a Standard Signal
(FM) Generator (SSG) to the
antenna connector.
2 • CH No. : [FM HIGH]
• Receiving
Connect a Digital voltmeter to the CP5
on the MAIN UNIT.
Set the SSG as;
Frequency
Level
Connect a Digital voltmeter to the
CP10 on the MAIN UNIT.
: 127.500 MHz
: 136.975 MHz
Set the SSG as;
Frequency
Level
Connect a Digital voltmeter to the
CP13 on the MAIN UNIT.
Set the SSG as;
Frequency
Level
Decrease the adjustment value [F3] to
close the squelch once, then increase
the value to open the squelch.
Set the SSG as;
Frequency
Level
Decrease the adjustment value [F4] to
close the squelch once, then increase
the value to open the squelch.
4 - 5
OPERATION
: 118.000 MHz
: 0 dB μV
(1 kHz, 30% Dev.)
: 161.650 MHz
: 0 dB μV
(1 kHz, 3.5 kHz Dev.)
: 127.500 MHz
: 0 dB μV
(1 kHz, 30% Dev.)
: 163.275 MHz
: 0 dB μV
(1 kHz, 3.5 kHz Dev.)
ADJUSTMENT
VALUE
ITEM/POINT
[F17]
4.9–5.1 V
(CS-A210 ADJ)
– –
L2, L4, L8, L10
(MAIN UNIT)
[F18]
Minimum
(CS-A210 ADJ)
voltage
[F19]
(CS-A210 ADJ)
– –
[F20]
(CS-A210 ADJ)
Maximum
voltage
[F21]
(CS-A210 ADJ)
– –
Squelch
[F3]
open
– –
Squelch
[F4]
open