Hitachi DV-PF7E Service Manual page 34

FLOW CHART NO.8 [ FOR MODELS DV-PF7E, DV-PF7E(UK) ]
Picture does not appear normally. [In the RGB/composite video output (JK101)]
Set the disc on the disc tray, and playback.
Are the video signals outputted to each pin of
CN1601 on the Main CBA?
CN1601 1PIN S-Y
CN1601 10PIN S-C
CN1601 4PIN R
CN1601 8PIN G
CN1601 6PIN B
Are the video signals shown above inputted into
each pin of IC1403 and IC1401?
IC1403 3PIN S-Y
IC1403 1PIN S-C
IC1401 4PIN R
IC1401 14PIN G
IC1401 15PIN B
Are the video signals outputted to each pin
of IC1403 and IC1401?
IC1403 6PIN CVBS
IC1403 5PIN S-Y
IC1403 7PIN S-C
IC1401 5PIN R
IC1401 12PIN G
IC1401 2PIN B
Yes
Yes
(continued to "A" on next page)
No
Replace the DVD Main CBA or the DVD
Mechanism.
Check the line between each pin of CN1601 and
each pin of IC1403 and IC1401 on the Main CBA,
and service it if defective.
No
1PIN → IC1403
CN1601
CN1601 10PIN → IC1403
4PIN → IC1401
CN1601
8PIN → IC1401 14PIN
CN1601
6PIN → IC1401 15PIN
CN1601
Check DVD-P-ON+5V line
and service it if defective.
No
No
Is 5V voltage supplied to Pin(4) of IC1403?
No
Are the "L" pulse inputted into Pins(9,10,11) of IC1401?
No
Are the "L" pulse
inputted into Pin(2)
of CN1601?
Replace DVD
Main CBA.
Yes
Check the line between
Pin(2) of CN1601 and
Pins(9,10,11) of IC1401
and service it if defective.
3-7
3PIN S-Y
1PIN S-C
4PIN R
G
B
Replace IC1403.
Is +5V voltage supplied
to Pin(16) of IC1401?
Is -5V voltage supplied
to Pin(7) of IC1401?
No
Yes
Replace IC1401.
Check the line between
DVD-P-ON+5V and
AL-5V, and service it if
defective.
Yes
Yes
No