FUNAI WD6D-M100 Service Manual page 40

FLOW CHART NO.12
Hi-Fi audio can not be recorded normally. (E-E mode is normal.)
Is the Hi-Fi-COM signal outputted to Pin(26) of IC451?
Is the line between Pin(8) of CN251 and Pin(26) of
IC451 normal?
Replace the Cylinder Assembly.
FLOW CHART NO.13
Hi-Fi audio can not be playbacked normally. (Hi-Fi E-E mode is normal.)
Is the Playback Envelope signal outputted to Pin(33) of
IC451?
Replace the Cylinder Assembly.
FLOW CHART NO.14
Audio can not be recorded normally in the linear audio mode. (E-E mode is normal.)
Is the audio signal inputted into Pin(13) of IC301?
Does the Bias oscillation circuit operate normally?
Is the audio signal outputted to Pin(11) of IC301?
Is the audio signal outputted to Pin(100) of IC301?
Replace the ACE Head Assembly.
FLOW CHART NO.15
Audio can not be playbacked normally in the linear audio mode. (E-E mode is normal.)
Is the audio signal supplied to Pin(5) of IC301?
Is there no dirt on the surface of ACE Head Assembly?
Is the height of ACE Head Assembly appropriate?
Replace the ACE Head Assembly.
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
No
Replace IC451.
No
Check the line between Pin(8) of CN251 and Pin(26)
of IC451, and service it if defective.
No
Is the Hi-Fi-H-SW signal inputted into to Pin(39) of IC451?
Yes
Replace IC451.
No
Check the line between Pin(78) of IC451 and Pin(13)
of IC301, and service it if defective.
No
Check the Bias oscillation circuit ( Q401,Q403,Q404,
Q405,Q406) and service it if defective.
No
Replace IC301.
No
Replace IC301.
Yes
Is the audio signal outputted to Pin(11) of IC301?
Yes
Check the line between Pin(11)
of IC301 and Pin(80) of IC451,
and service it if defective.
No
Clean the surface of ACE Head Assembly.
No
Readjust the height of the ACE Head Assembly.
1-11-16
No
Check the Hi-Fi-H-SW line between
Pin(39) of IC451 and Pin(19) of
IC501, and service it if defective.
No
Replace IC301.
E9TFCTR