Receiver Adjustments - Icom IC-F7000 Service Manual

5-4 RECEIVER ADJUSTMENTS

"TOTAL GAIN", "S-METER" and "DSC PEAK" adjustments must be performed at "ADJUSTMENT MODE".
ADJUSTMENT ADJUSTMENT CONDITIONS
NOISE NULL 1 • Operating frequency : 0.5 MHz
POINT • Mode
• Preset L209 parallel to top edge of its
chassis.
• Preset L401, L403, L404, L405 and
L801 to max. counter clockwise.
• Set the standard signal generator to
OFF (no signal output).
• Receiving
RECEIVER 1 • Operating frequency : 13.9210 MHz
GAIN • Mode
• Connect a standard signal generator
to the [ANT] connector and set as:
• Receiving
TOTAL GAIN 1 • While pushing HM-146's [CALL]
switch and RC-26's [EMG] switch,
then turn power ON.
• Push [2] switch to enter the RX adjust-
ment mode.
• Connect a standard signal generator
to the [ANT] connector and set as:
• Receiving
S-METER 1 • Set the standard signal generator to
OFF (no signal output).
2 • Set the standard signal generator as:
• Receiving
*The output level of the standard signal generator (SSG) is indicated as the SSG's open circuit.
: A3E
: J3E
Frequency : 13.9210 MHz
Level : 0.5 µV*
(–113 dBm)
Modulation : OFF
Frequency : 13.9210 MHz
Level : 320 µV*
(–57 dBm)
Modulation : OFF
Frequency : 13.9210 MHz
Level : 10 mV*
(–27 dBm)
MEASUREMENT
UNIT LOCATION
Front Connect an AC milli-
panel voltmeter to the [SP]
jack with a 4 dummy
load.
Front Connect an AC milli-
panel voltmeter to the [SP]
jack with a 4 dummy
load.
• Push the [OK] switch to write the adjustment value in the memo-
ry.
• Push the [OK] switch to write the adjustment value in the memo-
ry.
• Push the [OK] switch to write the adjustment value in the memo-
ry.
5 - 7
ADJUSTMENT
VALUE
UNIT ADJUST
Minimum output MAIN
level
Maximum out- MAIN
put level
R217,
R218
L207,
L208,
L210,
L211