Receiver Adjustments - Icom IC-F7000 Service Manual Addendum

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:
Frequency
Level
Modulation
• 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
adjustment mode.
• Connect a standard signal generator
to the [ANT] connector and set as:
Frequency
Level
Modulation
• Receiving
S-METER 1 • Set the standard signal generator to
OFF (no signal output).
2 • Set the standard signal generator as:
Frequency
Level
• Receiving
*The output level of the standard signal generator (SSG) is indicated as the SSG's open circuit.
MEASUREMENT
UNIT
Front C o n n e c t
: A3E panel millivoltmeter to the
[SP] jack with a 4
dummy load.
Front C o n n e c t
: J3E panel millivoltmeter to the
[SP] jack with a 4
ohms dummy load.
: 13.9210 MHz
: 0.5 µV*
(–113 dBm)
: OFF
• Push the [OK] switch to write the adjustment value in the
memory.
: 13.9210 MHz
: 320 µV*
(–57 dBm)
: OFF
• Push the [OK] switch to write the adjustment value in the
memory.
• Push the [OK] switch to write the adjustment value in the
: 13.9210 MHz
memory.
: 10 mV*
(–27 dBm)
5 - 7
VALUE
LOCATION
a n A C Minimum output
level
a n A C Maximum
output level
ADJUSTMENT
UNIT ADJUST
MAIN R217,
R218
MAIN L207,
L208,
L210,
L211