Radio Shack PRO-2050 - Page 13

Audio Section
No audio
Delective IC3 and/or
associated circuit.
RF Section
Weak or no reception
NO
Delective IC2 and/or IC4.
NO
Delective 020 and/or 021.
YES
Check the subsequent circuits
of the band control circuit.
NO
YES
Check incorrect voltage transistor.
Check the subsequent circuits
ol the band control circuit.
-13-
RF Freq.
MHz
29 - 54 MHz
108 - 137 MHz
137 - 174 MHz
406 - 512 MHz
806 - 956 MHz
Table 2.
Q22 Q21
o 8.2
11
0
11 8.2
11 8.2
11 8.2
Unit: V
Q20 Q19 Q18
11 11 7.8
11 11 7.8
o 11 7.8
11 0 7.8
11 11 0