Hitachi DV-PF7E - Page 35

3-8
Check the periphery of JK101 from Pins (10, 11,
15) of IC102 and service it if defective.
Check the periphery of JK1401 from
Pin (5) of IC1403 and service it if defective.
Check the periphery of JK1401 from
Pin (7) of IC1403 and service it if defective.
Are the composite video signals outputted to
Pin(4) of IC751?
Are the video signals outputted to the specific
output terminal?
Are the RGB video signals outputted to the
Scart jack (JK101)?
Are the luminance signals outputted to the
S-OUT terminal (JK1401)?
Are the chroma signals outputted to the
S-OUT terminal (JK1401)?
Ye s
Check the line between each pin of IC1401 and
each pin of IC102 on the Main CBA, and service
it if defective.
IC1401 4PIN → IC102 8PIN R
IC1401 14PIN → IC102 6PIN G
IC1401 15PIN → IC102 1PIN B
No
Replace IC102.Check AL+5V line
and service it if defective.
Is 5V voltage supplied to Pin(4,12) of IC102?
No
No Yes
No
No
No
Are the video signals inputted into each pin
of IC102?
(S-Y, S-C)
Ye s
IC102 8PIN R
IC102 6PIN G
IC102 1PIN B
Are the video signals outputted to each pin
of IC102?
Ye s
IC102 10PIN R
IC102 11PIN G
IC102 15PIN B
Replace IC751.
Replace IC501.
Are the composite video signals outputted to
Pin(19) of JK101 (Scart jack)?
Check the line between Pin(4) of IC751 and JK101
and service it if defective.
Are the "H" pulse inputted into Pins(9,10,11) of IC751?
No
Ye s
Ye s
No
No
A