Icom IC-725 Service Manual page 27

6-3 RECEIVER ADJUSTMENT
ADJUSTMENT
BFO
FREQUENCY
SENSITIVITY
TOTAL GAIN
S-METER
ADJUSTMENT
MEASUREMENT POINT
ADJUSTMENT CONDITIONS VALUE
UNIT LOCATION ADJUST
* Displayed frequency: 14.10000 MHz AIN | Connect the 9.01300 MHz MAIN C294
* Mode : USB frequency counter to
* Receiving R266. |
* Моде : 9.01060 MHz
* Transmitting
* Mode : 9.01000 MHz
е Receiving | |
* Mode : CW 9.00980 MHz i
(+150 Hz)
* Mode ` AM
е Displayed frequency: 14.10000 MHz Rear
* Mode : USB panel
* [RIT] switch :OFF
e [AGC] switch : ‫|א‬‎ (Fast)
* [ATT] switch : OFF
* [NB] switch : OFF
е [PRE] switch : ON
e [SQL] control : Max. COW
е Set the signal generator;
Level : 0.16 pV (- 123 dBm)
Modulation: OFF
* Receiving
Connect the AC milli- | Pre-set to max. CW.
voltmeter to the
[EXT SP] jack with
an 8 Q load. Maximum audio output L33, L34,
L35, L36,
L16, L17,
L21, L22,
L23, L79,
L78, 177
level
* Set the signal generator;
Level : OFF
* Displayed frequency: 14.10000 MHz Rear | Connect the AC milli- | 1.0 V (0 dB) Front [AF]
* Mode : USB panel | voltmeter to the panel control
е [PRE] switch : OFF [EXT SP] jack with
* Set the signal generator; an 8 Q load. |
Level : 1.0 mV (—47 dBm)
Modulation: OFF |
* Receiving |
шин
* Displayed frequency: 14.10000 MHz Front MAIN
* Mode : USB panel
e [PRE] switch : OFF
е Set the signal generator;
Level : 50 pV (— 73 dBm)
Modulation: OFF
* Receiving
е Set the signal generator; $9+60 dB В110
Level : 50 mV (—13 dBm)
Repeat above adjustments 1 and 2 a couple of times.