FLOW CHART NO.26 Hi-Fi TROUBLESHOOTING (2)
FLOW CHART NO.27 Hi-Fi TROUBLESHOOTING (3)
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pkziyzq
,,
Refer to the E-E system
troubleshooting chart.
I
t
YES
,
Is playback envelope signal
outputted at pin (21) of KS401
?
YES
Is
playback envelope signal
inputted at pin (20) of
IC6301
7
YES
Check line between pin
(21)
of
IC6401
to pin
(20)
IC6301.
Is playback audio signal
NO
Do the peripheral circuits
outputted at pins
(10)
and (27)
--+
around pins (10) and (27) of
of
PC6301
?
RI6301
function
?
YES
NO
Check peripheral circuits
around pins
(10)
and (27) of
IC6301.
Line coupling: Is audiosignal outputted at pins(47) and (45) of
IC6301
1
RFcoupling
:
Is audio signal outputted at pin (48) of
IC6301
?
XAudio
signal output mode selection.
Pin (23) of
IC6301.
r
H
1
Hi-N
1
1
1
L
i
NORMAL
1
I
’
I
1
YES
Line coupling
:
Check line ranging from pins (47) and (45) of
IC6301
to the
RFcoupling
:
Check line ranging from pin (48) of
IC6301
tothe
audio input terminal pin (2) of tuner
(CNV6301). [VC-MH90 only]
Refer to the E-E system
troubleshooting chart.
I
1
YES
Is REC FM
signal
outputted at pin
(14)
(TP6301)
of
IC63Oi
?
1
YES
Replace
IC6301.
Check line between from pin
(14)
(26) of
IC6401
?
of
IC6301
(TP6301)
to pin (26) of
IC6401.
I YES
I
I
(20) of
IC6401
?
Check line between from pin (23)
Is REC FM signal outputted at pin
(8) of
IC6401
7
I
1
1
YES
Check XC connector.
I--
Check
RECIPE
control circuit, BIAS
CTL
8V
and Hi-Fi
CTL
1
W).
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