Sharp 910N User Manual

Page 19

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5 Troubleshooting

MJ15AS*/MJ17AS*/MJ19AS*/
MJ15BS*/MJ17BS*/MJ19BS*

5-5

X400 oscillate properly?

5-2-2 No Video (DIGITAL)

1

Replace or check related circuit.

Check signal cable connection and power.

Yes

No

Is there R, G, B input at

R110, R112, R114, R111,

R113 and R115?

Check input part.

Yes

No

Is there waveform

at R11, R117?

Check input part.

No

Yes

Does the output signal appear

at Pin 17~20, 22~27 of CN400?

Check IC400 and related circuit.

No

Yes

There are DC 5V at Pin 1, 2

and 3 of CN400?

Check the panel EN signal at R222

and BLEL signal at R603.

No

Yes

Replace LCD Panel.

7

6

5

4