1-8-6
E7A70TR
Is 5V voltage applied to the Pin(4, 12) of
IC1401?
Replace IC1401.
Check VIDEO+5V line
and service it if defective.
Are the video signals outputted to each pin of
IC1401?
Yes
No
Yes
Yes
No
Check the periphery of JK2203 from Pins (10, 11,
13) of IC1401 and service it if defective.
Check the periphery of JK2201 from Pins (14) of
IC1401 and service it if defective.
Check the periphery of JK2202 from
Pin (13) of IC1401 and service it if defective.
Check the periphery of JK2202 from
Pin (15) of IC1401 and service it if defective.
Are the video signals outputted to the specific
output terminal?
Are the Y, Cb, Cr signals outputted to the
COMPONENT OUT terminal (JK2203)?
Are the luminance signals outputted to the
S-VIDEO OUT terminal (JK2202)?
Are the chroma signals outputted to the
S-VIDEO OUT terminal (JK2202)?
No
No
No
No
Are the composite video signals outputted to
the VIDEO OUT terminal (JK2201)?
Are the video signals outputted to each pin of
CN1101 on the BOARD POWER?
Replace the DVD MECHANISM & DVD MAIN
BOARD ASSEMBLY.
Check the line between each pin of CN1101 and
each pin of IC1401, and service it if defective.
Are the video signals shown above inputted into
each pin of IC1401?
Yes
No
No
CN1101
VIDEO-Y(I/P)
24PIN
CN1101
VIDEO-Cr/Pr
26PIN
CN1101
VIDEO-Cb/Pb
28PIN
CN1101
VIDEO-C
VIDEO-Y(I/P)
VIDEO-Cr/Pr
VIDEO-Cb/Pb
VIDEO-C
22PIN
IC1401
VIDEO-Y(I/P)
3PIN
IC1401
VIDEO-Cr/Pr
8PIN
IC1401
VIDEO-Cb/Pb
6PIN
IC1401
VIDEO-C
1PIN
IC1401
VIDEO-Y(I/P)
13PIN
IC1401
VIDEO-Cr/Pr
10PIN
IC1401
VIDEO-Cb/Pb
11PIN
IC1401
VIDEO-CVBS
14PIN
IC1401
VIDEO-C
15PIN
CN1101
→
IC1401
24PIN
CN1101
→
IC1401
26PIN
CN1101
→
IC1401
28PIN
→
IC1401
22PIN
3PIN
8PIN
6PIN
1PIN
CN1101
A
