1-10-6
E9KGATR
Is 5V voltage supplied to the Pin(4, 12) of
IC2405 and the Pin(4) of IC2404?
Replace
P1 (BOARD MCV).
Check P-ON+5V line and
replace P1 (BOARD MCV)
or P3 (BOARD POWER
SUPPLY) if defective.
Are the video signals outputted to each pin of
IC2404 and each pin of IC2405?
Yes
Are the "L" pulse inputted to Pin(9,10,11) of IC2406?
Is 5V voltage supplied to
Pin(16) of IC2406?
Is -5V voltage supplied to
Pin(7) of IC2406?
Check AL+5V, and AL-5V line
and replace P1 (BOARD MCV)
or P3 (BOARD POWER
SUPPLY) if defective.
Yes
Yes
Replace P1
(BOARD MCV).
No
No
No
No
Yes
Yes
Yes
Yes
No
Check the periphery of JK2403 from Pin (10, 11,
13) of IC2405 and replace P1 (BOARD MCV)
if defective.
Check the periphery of JK2402 from Pin (5) of
IC2404 and replace P1 (BOARD MCV) if defective.
Check the periphery of JK2402 from Pin (7) of
IC2404 and replace P1 (BOARD MCV) if defective.
Are the video signals outputted to the specific
output terminal?
Are the Y, Pb/Cb, Pr/Cr signals outputted to the
COMPONENT OUT terminal (JK2403)?
Are the luminance signals outputted to the
S-VIDEO OUT terminal (JK2402)?
Are the chroma signals outputted to the
S-VIDEO OUT terminal (JK2402)?
No
No
No
No
No
Are the composite video signals outputted to
the VIDEO OUT terminal (JK2751)?
Is the video signal outputted to Pin(15) of IC2406?
Is the video signal outputted to the emitter of Q2391?
Check the line between the
emitter of Q2391 and JK2751,
and replace P1 (BOARD MCV)
if defective.
Check the line between each pin of CN2201 and
each pin of IC2404 and IC2405, and replace
P1 (BOARD MCV) if defective.
Are the video signals shown above inputted into
each pin of IC2404 and each pin of IC2405?
No
VIDEO-Y(I/P)
VIDEO-Pr/Cr
VIDEO-Pb/Cb
VIDEO-C
IC2405
VIDEO-Y(I/P)
3PIN
IC2405
VIDEO-Pr/Cr
8PIN
IC2405
VIDEO-Pb/Cb
6PIN
IC2404
VIDEO-Y(I)
3PIN
IC2404
VIDEO-C
1PIN
IC2405
VIDEO-Y(I/P)
13PIN
IC2405
VIDEO-Pr/Cr
10PIN
IC2405
VIDEO-Pb/Cb
11PIN
IC2404
VIDEO-CVBS
6PIN
IC2404
VIDEO-Y(I)
5PIN
IC2404
VIDEO-C
7PIN
CN2201
→
IC2405
7PIN
CN2201
→
IC2405
5PIN
CN2201
→
IC2405
3PIN
CN2201
→
IC2404
9PIN
3PIN
8PIN
6PIN
1PIN
VIDEO-Y(I)
CN2201
→
IC2404
1PIN
3PIN
Replace P1
(BOARD MCV).
Replace P1
(BOARD MCV).
A
