Realistic PRO-2004 - Page 22

Symptom
Cause/Remedy
9) No sound
in AM mode but NFM,
1) Defective IC502
or IC503: Replace.
WFM operate. 2) Defective Switching circuit consists of Q29, 040, 045: Replace the
.
defective components.
.
•
3) Defective AN L, AF Pre Amp. circuit consists of D32, Q22: Replace
.
the defective components .
•
4) Defective AM IF DET. circuit consists of Q16, Q17, D31:
Replace
,
,
.
.
the defective components.
.
.
,
..
.
.
10) No sound in NFM mode but AM,
1) Defective IC502 or lC503: Replace.
WFM operate.
.
.
2) Defective Switching circuit consists of 028, D46: Replace the
.
.
defective components.
11) No sound
in AM and NFM MODE
1) Defective IC2: Replace.
..
but WFM operate.
.
·
12) No sound in WFM mode but AM,
1) Defective IC502,
503 or IC1: Replace.
N
FM operate. 2) Defective Switching circuit consists of 027, D47: Replace the defective
components.
·
•
13) Low sensitivity between 25.0000 to
1) Defective DECODER SWITCHING circuit consists of IC501, QS01:
39.99S0 MHz.
Replace
the defective components.
.
2) Defective Bandpass filter (B.P.F): Replace the defective components.
•
.
•
14) Low sensitivity between 40.0000 to
1) Defective DECODER SWITCHING circuit consists of ICS01, Q502:
, 67.99S0 MHz.
•
Replace the defective components.
•
.
2) Defective B.P.F: Replace the defective components .
.
·
lS) Low sensitivity between 68.0000 to
1) Defective DECODER SWITCHING circuit consists of ICS01, QS03:
. .
107.99S0 MHz. Replace the defective components.
.
-
.
.
2) Defective B.P.F: Replace the defective components .
.
•
16) Low sensitivity between 1) Defective DECODER SWITCHING circuit consists of IC501, Q504:
.
108.0000 to 173.9950 MHz. Replace the defective components.
•
2) Defective B.P.F: Replace the defective components .
•
.
17) Low sensitivity between
1) Defective DECODER SWITCHING circuit consists of ICS01, Q505:
,
174.0000 to 279.99S0 MHz.
Replace
the defective components.
•
2) Defective B.P.F: Replace the defective components.
18) Low sensitivity between
1) Defective DECODER SWITCHING circuit consists of ICS01, QS06:
280.0000 to.S20.0000 MHz.
Replace the defective components.
2) Defective B.P .F: Replace the defective components.'
,
19) Low sensitivity between 1) Defective DECODER SWITCHING circuit consists of IC501, Q507:
760.0000 to 1300.0000 MHz. Replace the defective components.
2) Defective B.P.F: Replace the defective components.
.
20) Does not operate between
Defective ICS03
port Pl0, IC502, 031S and/or VCO-l circuit:
2S.0000 to 220.4950 MHz or Replace the defective components.
760.0000 to 10S2.4950 MHz .
.
,
•
•
•
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