Radio Shack Pro-60 - Scanning and Bank Management; Scanning Stored Channels; Managing Channel Banks

Zeromatic Function Test Procedure
Oiscriminator curve
0306
4 IC303
5
Zeromatie lunetion operates when output is "H."
0< e1 < e3 e3 < e1 < e2
e2 < e1 < Vee
Output (D305 Cathode) L
H L
To adjust voltage e1, reeeive the signal in manual mode and:
• In AM/NFM mode, set T301 to obtain 1.0 ±0.1 volt DC at TP301 .
• In WFM mode, set T302 to obtain 1.8 ±0.1 volt DC at TP301.
See "NFM/AM Discriminator Coil Alignment" and "WFM Discriminator Coil Alignment" on Page 11 and 12.
II the zeromatie does not lunetion eorreetly, reler to "Relerenee Frequeney Osc, Alignment" (Page 11), check that
the Irequency is 1123.200000 MHz ±200 Hz, and adjust discriminator eoil (T301, T302).
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