Toshiba DVR80KF - Page 37

1-11-14 E9TK3TR
Ye s
No
Are the video signals outputted to Pin(24) of IC1509?
Ye s
Ye s
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), P6
(BOARD DTV MODULE UNIT) or TU1800 if defective.
No
IC1509 VIDEO-IN 1 (AV1)20PIN
IC1509 VIDEO-IN 2 (AV2)12PIN
IC1509 TUNER-VIDEO
VIDEO-IN 1 (AV1)
VIDEO-IN 2 (AV2)
18PIN
IC1509 DTV-Y3PIN
IC1509 DTV-C5PIN
IC1509
→ JK150420PIN
IC1509
→ JK200112PIN
TUNER-VIDEOIC1509
→ TU180018PIN 17PIN
26PIN
28PIN
DTV-Y
IC1509
→ CN18003PIN
DTV-CIC1509
→ CN18005PIN
Check the ECO+5V, ECO+9V
line and replace P1(AV
ASSEMBLY) or P4(PW/SW
ASSEMBLY) if defective.
Replace P1(AV
ASSEMBLY).
Ye s N o
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.
Ye s
Ye s
Ye s
Ye s
No
Ye s N o
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 replace
P1(AV ASSEMBLY) or P4(PW/SW
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)?
Ye s
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) or P4(PW/SW
ASSEMBLY) if defective.
Replace P1(AV
ASSEMBLY).
Ye s N o
Is 5V voltage supplied to Pin(27,29,47,63) of IC1509?
Is 9V voltage supplied to Pin(75) of IC1509?