Hitachi DVPF2E Service Manual page 27

FLOW CHART NO.10
Sound is not outputted.
Set the disc on the disc tray, and playback.
Are the analogue audio signals outputted to each
pin of the main unit connector CN1601?
CN1601 16PIN DVD-AUDIO-L
CN1601 18PIN DVD-AUDIO-R
Are the analogue audio signals inputted to each
pin of IC1201
IC1201 2PIN DVD-AUDIO-L
IC1201 6PIN DVD-AUDIO-R
Is the mute signal of the connector CN1601 "H"
level?
CN1601 19PIN DVD-A-MUTE
CN1601 17PIN DVD-A-R-MUTE
CN1601 15PIN DVD-A-L-MUTE
Are the analogue audio signals inputted to each
pin of IC1201.
IC1201 1PIN DVD-AUDIO-L
IC1201 7PIN DVD-AUDIO-R
Are the audio signals outputted to the specific
output terminal?
Are the audio signals outputted to the L/R OUT
terminal (JK751)?
Yes
Yes
Yes
Yes
No
Replace DVD Main CBA Unit or DVD Mechanism.
Check each line between each pin of the main unit
connector CN701 and each pin of IC1201.
No
CN1601 16PIN
CN1601 18PIN
No
Replace DVD Main CBA Unit.
No
Check or replace IC1201.
No
Check the periphery between Pins(1, 7) of IC1201
and JK751.
IC1201 2PIN DVD-AUDIO-L
IC1201 6PIN DVD-AUDIO-R
E1-8-6