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•
RECEPTION CHECK
•
Power ON
. /
•
Does
NO
Displav Work
.:>
Properly?
YES
•
Does
sa
<
functio"
and Scan
::>
NO
When
sa
is
ON?
YES
•
Does
NO
Kev-in werk
.:>
.
properly?
•
•
YES
Is Power Supply circuit
OK?
....... Doesthe
•
Unit produce NOISE
NO
turned
clockwise?
Is voltage Regulator
OK?
ISO
:
counter-
c1ockwise)
YES
Is ICS03 clock
osclilatio"
waveform
•
or reset OK?
Is
reception
.:>
NO
OK when correct
.
<
treueencies
are
entered?
15
epu
control circuit
•
•
OK?
•
•
•
YES
,
Is Kevboard and/or
Is
oe - oC
converter
Is ICS03 OK?
-:
Does
OK?
associated
circuit OK?
NO
Memorv
function
:>
work OK?
.........
YES
.
Is Back-up battery OK?
Is voltage Regulator
Is ICS03, and reset
Is IC701 OK?
•
OK?
properlv?
END
Is
CPU
control circuit
Is AF filter select
Is IC1, IC2 andlor
(which consists of
D49,
•
IICS01, OSOl-S07)
moeial
circuit
OK?
030, 31, 34) OK?
OK?
-
+
.
•
Is memory power supply
Is MODE lAM, NFM,
•
is IF Amp or Noise
Is MUle circuit
tlC4.
circuit (which consist
WFMI seteer OK?
023,24,
2S1 OK?
Amp
circuit IIC1,
IC21
of 1C9)
OK?
IICS02, 027, 28, 291
OK?
•
Is VCO (VCO t
,
VC021
Is Audio Amp
(IC7)
seteet
OK?
Is ICS03
OK?
IICS02, 031S, 3161
or Audio Pre Amp (leG)
OK?
Is VCO filter I, 2
select
OK?
•
IICS02. 0301,3021
•
Is PLL
circuit
(w hich
.
consists of IC301
,
302,
•
3031 OK?
•
.
•
•
Is VCO c
ircuit
OK?
•
•
•
.
-
•
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