RECEPTION
CHECK
No
Is the
power
supply circuit
Does the SO No
OK?
function
and scan
when SO is
on?
Is the voltage regulator OK?
Is the
\G1
clock oscillation
No
waveform OK?
Is the voltage detector
circuit OK?
Does the
unit
produce
noise
No
Is
IG1
OK?
when
the
volume
control
is
turned clockwise? (SO is
turned
counterclock-
wise.)
Is the IF amp or noise amp
Is the
circuit (IG301, IG302) OK?
reception
OK when
No
the
correct
frequencies
are
entered?
Is the DG-DG converler OK?
Is the keyboard andlor
associated
circuit
OK?
Is the voltage regulator OK?
Is the RF filter selection
(0101-0103)
OK?
Is IG1 reset properly?
Is the AM/FMIWFM mode
selection (IG303, IG30S) OK?
Is IG301, IG302, andlor
associated circuit OK?
Is the VGO (VG01, VG02)
selection
(0111,0114)
OK?
Is the mute circuit (Q308) OK?
Is the PLL circuit (IG101,
IG102,
0109-0118)
OK?
Is the audio amp (IG306) or
audio pre-amp (0307) OK?
-8-
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