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5 - 7
5-4 RECEIVER ADJUSTMENTS
”TOTAL GAIN”, “S-METER” and “DSC PEAK” adjustments must be performed at “ADJUSTMENT MODE”.
NOISE NULL
POINT
RECEIVER
GAIN
TOTAL GAIN
S-METER
1
1
1
1
2
• Operating frequency : 0.5 MHz
• Mode
: A3E
• 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
• Operating frequency : 13.9210 MHz
• Mode
: J3E
• Connect a standard signal generator
to the [ANT] connector and set as:
Frequency
: 13.9210 MHz
Level
: 0.5 µV*
(–113 dBm)
Modulation
: OFF
• Receiving
•
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:
Frequency
: 13.9210 MHz
Level
: 320 µV*
(–57 dBm)
Modulation
: OFF
• Receiving
• Set the standard signal generator to
OFF (no signal output).
• Set the standard signal generator as:
Frequency
: 13.9210 MHz
Level
: 10 mV*
(–27 dBm)
• Receiving
Front
panel
Front
panel
Connect an AC milli-
voltmeter to the [SP]
jack with a 4
Ω
dummy
load.
Connect an AC milli-
voltmeter to the [SP]
jack with a 4
Ω
dummy
load.
Minimum output
level
Maximum out-
put level
MAIN
MAIN
R217,
R218
L207,
L208,
L210,
L211
ADJUSTMENT
ADJUSTMENT CONDITIONS
UNIT
LOCATION
VALUE
UNIT
ADJUST
MEASUREMENT
ADJUSTMENT
*The output level of the standard signal generator (SSG) is indicated as the SSG’s open circuit.
• 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.
Summary of Contents for IC-F7000
Page 1: ...HF TRANSCEIVER iF7000 SERVICE MANUAL ...
Page 61: ... BOTTOM VIEW MAIN UNIT 9 8 ...
Page 63: ... BOTTOM VIEW PA UNIT 9 10 ...
Page 65: ...1 4 8 1 4 8 5 5 9 12 BOTTOM VIEW PLL UNIT ...
Page 66: ...9 3 5 DRIVER BOARD TOP VIEW 9 13 GND VARO VARI to PA unit J6411 9 3 6 VARISTOR 1 BOARD ...
Page 78: ......
Page 79: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14012HZ C1 C 2003 Icom Inc ...