FUNAI WD6D-M100, Service Manual, Page: 40 / 99

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