Icom IC-Q7A Service Manual page 14

5-2 PLL ADJUSTMENT
1ST/2ND VCO LOCK VOLTAGE must be verified on the normal mode.
MEASUREMENT წყება.
ADJUSTMENT ADJUSTMENT CONDITION
LOCATION UNIT |ADJUST
* Displayed frequency : Connect the ОС|1.5У-2.5У
145.000 MHz voltmeter to the L68.
* Transmitting
* Displayed frequency : less than 7.2 V
449.980 MHz
* Receiving
* Displayed frequency : 19V-2.9V
493.300 MHz
* Receiving
* Displayed frequency : less than 11.0 V
282.900 MHz
* Receiving
* Displayed frequency : 1.8 У + 2.8 У
283.000 MHz
* Receiving
* Displayed frequency : less than 9.2 V
493.295 MHz
* Receiving
* Displayed frequency : voltmeter to Ше|0.2\ - 12V
430.000 MHz
* Receiving
* Displayed frequency : less than 2.5 V
433.500 MHz
* Receiving
* Displayed frequency : voltmeter to the
(tk ch) 145.600 MHz check point QUAD.
* Connect an SSG to the antenna
connector and set as:
Level : 1 ту" (-47dBm)
Deviation :+ 3.5 kHz
Modulation :1 kHz
* Receiving
*This output level of the standard signal generator (SSG) is indicated as SSG's open circuit.
L21
Detector output voltage adjustment
SEN
VHF and UHF sensitivity check point
L68
QUAD T / lock h
2nd VCO lock voltage check point A