Realistic PRO-2004 - Page 23

.
Symptom
Cause/Remedy
.
21) Does not operate between
Defective IC503
port P11. IC502, 0316 and/or VCO-2 circuit:
220.5000
to 520.0000 MHz or
Replace the defective components.
1052.5000
to 1300.0000 MHz.
22)
Low sensitivity between
Defective IC503
port P66, IC502. 0301 and/or VCO filter-1 circuit:
25.0000
to 520.0000 MHz.
Replace
the defective components.
23)
Low sensitivity between
Defective IC503
port P67, IC502. 0302 and/or VCO filter-2 circuit:
760.0000
to 1300.0000 MHz.
Replace
the defective components.
24)
All band do not operate but display
1) Defective PLL circuit IC301. IC302, IC303. IC304 and/or associated
is OK.
circuit: Replace
the defective components.
2) Defective IC305. IC306 and/or associated circuit: Replace the defective
components.
25) Searches but does not halt on the 1) Defective IC6: Replace.
correct frequency. 2) Discriminator Coil T13
(AM and NFM mode or T6 (WFM mode) is
out of adjustment:
TP4 shall have approx. 3.8 V in normal receiving AM and N FM mode.
TP3 shall have approx. 3.8 V in normal receiving WFM mode.
.
'.
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