Philips DVP3355V/F7 Service Manual page 32

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 IC451?
Is the line between Pin(8) of CN253 and
Pin(21) 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(30) of IC451?
Replace 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(76,78,80) of IC301?
Does the Bias oscillation circuit operate normally?
Is the audio signal outputted to Pin(10) of IC301?
Is the audio signal outputted to Pin(9) of IC301?
Replace ACE head.
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(6) 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
Service the line between Pin(8) of CN253 and
Pin(21) of IC451.
No
Is the Hi-Fi-H-SW signal inputted into to Pin(27) of IC451?
Yes
Replace
Check the Hi-Fi-H-SW line between
IC451.
Pin(27) of IC451 and Pin(25) of
IC501, and service it if defective.
No
Check the line between Pin(61) of IC451 and
Pin(76,78,80) of IC301, and service it if defective.
No
Check the Bias oscillation circuit ( Q421,Q422,
Q425,Q426) and service it if defective.
No
Replace IC301.
No
Replace IC301.
Yes
Is the audio signal outputted to Pin(10) of IC301?
Yes
Check the line between Pin(62) of
IC301 and Pin(4) of IC451, and
service it if defective.
No
Clean the surface of ACE head assembly.
No
Readjust the height of the ACE head assembly.
1-10-12
No
No
Replace
IC301.
E8E6DTR