Tandy Radio Shack Realistic PRO-2004 Service Manual page 2

Step
Control Setting Test Instrument
Adjust Remarks
Chanel Program ming Conneetion
6 OFF/vOLUME control:
Connect Signa I
T7
I
Alignment of 455 kHz IF coil
I
ON Generator to TP1 and
1) Set the Signa I Generator frequency
SQUELCH control : Oscilloscape, AC SSVM,
to 4S.5 MHz,
Fully CCW Distortion Meter, SU
AM : 60% MOD. at 1 kHz and
Channel Programming:
Laad to EXT SPKR
100 IN output
CH6 (120 MHz -AM) JACK.
2) Adjust T7 to max imum sensitivity.
(Figure S)
7 Same as step 6 Same as step 6 T8
I
Alignment of 455 kHz AM DET.
I
coil
1) Set the Signal Generator frequency
to 48.5 MHz,
AM: 60% MOD. at 1 kHz and
100 JlV output.
2) Adjust T8 to minimum T.H.D.
point.
Figure 8 "
Sn "LOAD
EXT
Á
SPKR
TP1
JACK
SIGNAL
-
UNIT
~ .'
AC
GENERATOR
UNDER TEST
;0
SSVM
1
,L
~
OSCltLOSCOPE
. :
~
DISTORTION
METER
- 13 -