Hitachi DV-PF73U Service Manual page 33

FLOW CHART NO.15
Hi-Fi audio can not be playbacked normally in the linear audio mode. (E-E mode is normal.)
Is the audio signal supplied to Pin(100) of IC301?
Are the CL504, the connected cable and the parts
on periphery of playback amplifier normal?
Is there no dirt on the surface of AC head?
Is the height of AC head appropriate?
Replace the AC head.
3-14
Yes
Yes
Yes
Yes
Yes
No
Is the audio signal outputted to Pin(96) of IC301?
Yes
Check the line between Pin(96) of
IC301 and Pin(4) of IC451, and
service it if detective.
No
Service and replace poor parts.
No
Clean the surface of AC head.
No
Readjust the height of the AC head.
No
Replace
IC301.