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svmctorn
Possible Cause/Remedv
Does not scan but squelch operates
• IC501 is running "wild":
Press RESTART switch.
• Detective CPU IC501 and/or associated circuit:
Replace the detective components.
Oparates in manual but does not operate in scan
• Squeich
control
is not adjusted correctly:
Turn squelch control ciockwise.
Display lights but program does not operate
• Detective keyboard or connector and/or associated cir-
cuit:
Repiace the detective components.
Sound does not come out in AM mode but NFM and
• Detective IC501:
WFM operate
Replace.
• Detective switching circuit 045 and/or associated cir-
cuit:
Repiace the detective components.
• Detective ANL circuit or AF pre-amplitier 020, 035,
and/or associated circuit:
Replace the detective components.
• Detective AM IF amp or detector circuit 017,018,034,
and/or associated circuit:
Replace the detective components.
Sound does not come out in NFM mode but AM and
• Detective IC501:
WFM operate
Replace.
• Detective switching circuit 045, 039, and/or associated
circuit:
Replace the detective components.
Sound does not come out in AM and NFM modes but
• Detective IC2, 015, 016, and/or associated circuit:
WFM operates
Repiace the detective components.
• Detective switching circuit 046, 033, 038, and/or asso-
ciated circuit:
Replace the detective components.
Sound does not come out in WFM mode but AM and
• Detective iC501:
NFM operate
Replace.
• Detective switching circuit 046, 032, and/or associated
circuit:
Replace the detective components.
Low sensitivity between 25.000 and 39.995 MHz
• Detective switching circuit 037 and/or associated cir-
cuit:
Replace the detective components.
• Detective bandpass tilter (BPF):
Replace the detective components.
Low sensitivity between 40.000 and 67.995 MHz
• Detective switching circuit 037 and/or associated cir-
cuit:
Replace the detective components.
• Detective bandpass filter (BPF):
Replace the detective components.
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