FLOW CHART NO.12
Hi-Fi audio can not be recorded normally. (E-E mode is normal.)
No
Is the REC FM signal outputted to Pin(26) of IC451?Replace IC451.
Yes
Is the line between Pin(8) of CN251 and NoCheck the line between Pin(8) of CN251 and
Pin(26) of IC451 normal?Pin(26) of IC451, and service it if defective.
Yes
Replace the Cylinder Assembly.
FLOW CHART NO.13
Hi-Fi audio can not be playbacked normally. (Hi-Fi E-E mode is normal.)
No
Is the Playback Envelope signal outputted to
Is the Hi-Fi-H-SW signal inputted into to Pin(39) of IC451?
Pin(33) of IC451?
No
YesYes
Replace IC451.Replace Check the Hi-Fi-H-SW line between
IC451.Pin(39) of IC451 and Pin(19) of
IC501, and service it if defective.
FLOW CHART NO.14
Hi-Fi audio can not be recorded normally in the linear audio mode. (E-E mode is normal.)
No
Check the line between Pin(78) of IC451 and
Is the audio signal inputted into Pin(13,15,17) of IC301?
Pin(13,15,17) of IC301, and service it if defective.
Yes
No
Check the Bias oscillation circuit (Q401,Q403,
Does the Bias oscillation circuit operate normally?
Q404,Q405,Q406) and service it if defective.
Yes
No
Is the audio signal outputted to Pin(11) of IC301?Replace IC301.
Yes
No
Is the audio signal outputted to Pin(100) of IC301?Replace IC301.
Yes
No
Is CN504 and the connected cable normal?Replace CN504 and the connected cable.
Yes
Replace ACE head.
1-10-13H9740TS |
ACEC
