FUNAI MAGNANOX BZV420MW8 Service Manual page 41

D
Is the "L" pulse inputted into the Pin(49) of IC1451?
Yes
Is the audio signal outputted to Pin(78, 80) of
IC1451?
Yes
Is the audio signal inputted into Pin(3,13) of
IC2101?
Yes
Is the audio signal outputted to Pin(4,14) of
IC2101?
Yes
Is the audio signal outputted to Pin(4,14) of
IC2406?
Yes
Check the line between Pin(4,14) of IC2101 and
the audio output terminal (JK2751), and service it
if defective.
FLOW CHART NO.12
Hi-Fi audio can not be recorded normally. (E-E mode is normal.)
Is the REC FM signal outputted to Pin(26) of IC1451?
Is the line between Pin(8) of CN1253 and
Pin(26) of IC1451 normal?
Replace the Cylinder Assembly.
Yes
Yes
No
Check the line between Pin(49) of IC1451 and
Pin(31) of IC1501, and service it if defective.
No
Replace IC1451.
No
Check the line between Pin(78, 80) of IC1451 and
Pin(3,13) of IC2101, and service it if defective.
No
Is 5V voltage supplied to Pin(16) of IC2101, or -5V
voltage supplied to Pin(7) of IC2101?
Yes
Check the AL+5V line and the AL-5V line, and
service it if defective.
Is the "H" pulse inputted into the Pin(9,10,11) of
IC2101?
Yes
Replace IC2101.
No
Is 5V voltage supplied to Pin(16) of IC2406, or -5V
voltage supplied to Pin(7) of IC2406?
Yes
Check the AL+5V line and the AL-5V line, and
service it if defective.
Is the "H" pulse inputted into the Pin(9,10,11) of
IC2406?
Yes
Replace IC2406.
No
Replace IC1451.
No
Service the line between Pin(8) of CN1253 and
Pin(26) of IC1451.
1-11-15
No
No
Replace IC1501.
No
No
Replace IC1501.
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