Tandy Radio Shack Realistic PRO-2004 Service Manual page 14

Control Setting Test Instrument
Adjust Remarks Step .
Chanel Programming Connection
.
6 OFF/vOLUME control: Connect Signa
I
T7
Alignment of 455 kHz IF coil
ON Generator to TPl and
1) Set the Signal Generator frequency
SQUELCH control: Oscilloscope, AC SSVM,
to 48.5 MHz,
Fully CCW Distortion Meter, 8n
AM: 60% MOD. at 1 kHz and
Channel Programming : Load to EXT SPKR
100 p.V output
CH6 (120 MHz -AM)
JACK.
2) Adjust T7 to maximum sensitivity.
(Figure 8)
.
7
Same as step 6 Same as step 6 T8
Alignment of 455 kHz AM DET.
.
coil
•
1) Set the Signal Generator frequency
to 48.5 MHz,
AM: 60% MOD. at 1 kHz and
100 p.V output.
--
2) Adjust T8 to minimum T.H.D.
•
point.
-
Figure 8
,
,
sa
'La A D
,
•
•
EXT
SPKR
TPl
JACK
SIGNAL
UNIT
AC
GENERATOR
UNDER TEST
SSVM
/11
OSCI l.LOSCOPE
"
,
DISTORTION
METER
_ 1 'l _
.
~
•