Sharp LC-15AV7U User Manual

7-7
A7121TS
2. VIDEO SIGNAL SECTION
Picture does not appear normally. (Tuner input (Analog)/ Video input/S-Video input)
Are the video signals inputted to the specific
input terminal?
Are the luminance signals inputted to the
Pin(76) of IC1202?
Check the line between Pin(76) of IC1202 and JK701,
and service it if defective.
Check the line between Pin(57) of IC1202 and JK701,
and service it if defective.
Check the line between Pin(71) of IC1202 and JK703,
and service it if defective.
Check the line between Pin(67) of IC1202 and TU61,
and service it if defective.
Check the line between each pin of IC1202 and input
terminal and service it if defective.
No
No
No
No
Ye s
Are the chrominance signals inputted to the
Pin(57) of IC1202?
Are the component video signals inputted to the
Pin(71) of IC1202?
Are the component video signals inputted to the
Pin(67) of IC1202?
Check the line between Pin(11, 12) of CN62 and
TU61, and service it if defective.
Replace DTV MODULE CBA UNIT.
Replace IC1202, LVDS CBA UNIT or LCD MODULE.
Ye s
No
No
No
Check the line between Pin(73) of IC1202 and
Pin(18) of CN62, and service it if defective.
Check the line between Pin(54) of IC1202 and
Pin(19) of CN62, and service it if defective.
Check the line between Pin(64) of IC1202 and
Pin(20) of CN62, and service it if defective.
Are the Y signals inputted to the Pin(73) of
IC1202?
Are the Pb signals inputted to the Pin(54) of
IC1202?
Are the Pr signals inputted to the Pin(64) of
IC1202?
Are the video signals inputted to the specific
input terminal?
FLOW CHART NO.21
Are the video signals outputted to the specific
output terminal?
Are the DIF signals outputted to the Pins(11, 12) of CN62?
Are the Y signals outputted to the Pin(18) of
CN62?
No
Ye s
Are the Pb signals outputted to the Pin(19) of
CN62?
Are the Pr signals outputted to the Pin(20) of
CN62?
No
Replace IC1202, LVDS CBA UNIT or LCD MODULE.
Picture does not appear normally. (Tuner input (Digital))
FLOW CHART NO.22
Ye s
No
No
No
Ye s
Replace IC1202, LVDS CBA UNIT or LCD MODULE.
Check the line between JK706 and Pin(75)
of IC1202 , and service it if defective.
Check the line between JK707 and Pin(56)
of IC1202 , and service it if defective.
Check the line between JK708 and Pin(66)
of IC1202 , and service it if defective.
Check the line between each input terminal and
IC1202 and service it if defective.
Are the Y signals outputted to the Pin(75) of
IC1202?
Are the Pb signals outputted to the Pin(56) of
IC1202?
Are the Pr signals outputted to the Pin(66) of
IC1202?
Are the video signals outputted to the specific
input terminal?
Picture does not appear normally. (Y / Pb / Pr input)
FLOW CHART NO.23

Sharp LC-15AV7U Specifications

General

Brand	Sharp
Model	LC-15AV7U
Category	TV
Language	English