1-10-16
E9NG0TR
Yes
No
Are the video signals outputted to Pin(24) of IC1509?
Yes
Yes
Are the video signals inputted to each pin of
IC1509?
Check the line between video input terminal and
each pin of IC1509, and replace P1(AV
ASSEMBLY), P5(BOARD DTV MODULE UNIT)
or TU1800 if defective.
No
IC1509
VIDEO-IN 1 (AV1)
18PIN
IC1509
VIDEO-IN (FRONT)
14PIN
IC1509
VIDEO-IN 2 (AV2)
12PIN
IC1509
TUNER-VIDEO
VIDEO-IN 1 (AV1)
VIDEO-IN 2 (AV2)
20PIN
IC1509
DTV-Y
3PIN
IC1509
DTV-C
5PIN
IC1509
→
JK1504
18PIN
VIDEO-IN (FRONT)
IC1509
→
JK1231
14PIN
IC1509
→
JK2001
12PIN
TUNER-VIDEO
IC1509
→
TU1800
20PIN
DTV-Y
IC1509
→
CN1800 26PIN
3PIN
DTV-C
IC1509
→
CN1800 28PIN
5PIN
Check the ECO+5V, ECO+9V
line and replace P1(AV
ASSEMBLY) if defective.
Replace P1(AV
ASSEMBLY).
Yes
No
Is 5V voltage supplied to Pin(27,29,47,63) of IC1509?
Is 9V voltage supplied to Pin(75) of IC1509?
FLOW CHART NO.10
Video E-E does not appear normally.
Is the video signal inputted to Pin(48) of IC301?
Check the line between Pin(24) of IC1509 and
Pin(48) of IC301, and replace P1(AV ASSEMBLY)
if defective.
Yes
Yes
Yes
Yes
No
Yes
No
No
No
No
No
Is the C-SYNC signal outputted to Pin(67) of IC301?
Is the C-SYNC signal inputted to Pin(58) of IC501?
Is 5V voltage supplied to Pin(18,24,42,55,72,91)
of IC301?
Is the serial data and clock signal supplied to
Pin(68,69) of IC301?
Check the P-ON+5V line and AL+5V line,
and replace P1(AV ASSEMBLY)
if defective.
Check the line between Pin(67)
of IC301 and Pin(58) of IC501,
and replace P1(AV ASSEMBLY)
if defective.
Check the line between Pin(68,69) of IC301
and Pin(71, 72) of IC501, and replace P1(AV
ASSEMBLY) if defective.
Check the line between Pin(61) of IC301 and
Pin(100) of IC1509, and replace P1(AV
ASSEMBLY) if defective.
Is the video signal inputted into Pin(100) of IC1509?
Replace P1(AV
ASSEMBLY).
Check the periphery of JK1504 from Pin(30) of IC1509
and replace P1(AV ASSEMBLY) if defective.
Are the video signals outputted to the specific
output terminal?
Are the composite video signals outputted to the
VIDEO-OUT terminal (JK1504)?
Are the composite video signals outputted to the
VIDEO-OUT terminal (JK2001)?
Yes
IC1509 30PIN VIDEO-OUT 1 (AV1)
IC1509 22PIN VIDEO-OUT 2 (AV2)
Are the video signals outputted to each pin
of IC1509?
No
No
Check the periphery of JK2001 from Pin(22) of IC1509
and replace P1(AV ASSEMBLY) if defective.
No
Check the ECO+5V, ECO+9V
line and replace P1(AV
ASSEMBLY) if defective.
Replace P1(AV
ASSEMBLY).
Yes
No
Is 5V voltage supplied to Pin(27,29,47,63) of
IC1509?
Is 9V voltage supplied to Pin(75) of IC1509?
