Icom IC-R7000 Service Manual page 30

RECEIVER ADJUSTMENT (Continued)
MEASUREMENT
ADJUSTMENT
POINT
ADJUSTMENT ADJUSTMENT CONDITIONS VALUE
UNIT LOCATION UNIT ADJUST
S-METER 4 •Apply no signal to ANTENNA FRONT METER Approx. 51
Verify
•FM
CONNECTOR. PANEL
(narrow)
NOTE: R80 controls total gain adjustment, so it is not be touched as noise will increase. However, it may be
necessary to adjust R80 under the following condition:
If the METER indicates more than 51 in step 4, adjust R51 to 51 and then follow step 1 again.
After
completing the above adjustment, adjust R80 to 59 with 0.1 mV input.
S-METER 1
•Display freq.: 762.0000 MHz FRONT METER S9+60dB IF R28
•FM (wide) • Mode: FM (wide) PANEL
•Apply RF signal to ANTENNA
CONNECTOR.
Level: 100mV (-?dBm)
Dev.: ±3.5kHz
RF AND IF UNITS
~----------...,
i[l
I 2
I 1
: IC3 1st IF Mixer :
L_ - - - -
~h~C! ~~l!!J
... r*
RR110045]1-----
. 1st IF Mixer
-~-+-
Adjustment
RF U N I T - - - - - - - - - + - - -
IF U N I T - - - - - - - - - + - - -
r------;--
R
28
, _ _ _ S-Meter FM (wide)
Adjustment
R54]- S-Meter FM (narrow) Adjustment
R51
MAIN UNIT
R37 Squelch Adjustment
6-9