MiTAC 8050QMA Manuel de service télécharger pdf (Page 116)

115

50QMA

N/B Maintenance

Display

OK?

Replace faulty

LCD or monitor.

Display

OK?

VGA Controller Failure

LCD No Display

1. Confirm LCD panel or monitor is good

and check the cable are connected

properly.

2. Try another known good monitor or

LCD module.

Remove all the I/O device & cable from

motherboard except LCD panel or

extended monitor.

Connect the I/O device & cable to

the M/B one at a time to find out

which part is causing the problem.

Yes

Re-soldering.

One of the following parts on the mother-board may be

defective, use an oscilloscope to check the following signal or

replace the parts one at a time and test after each replacement.

Board-level

Troubleshooting

Replace

Motherboard

Yes

8.3 VGA Controller Test Error LCD No Display-1

There is no display or picture abnormal on LCD although power-on-self-test is passed.

Check if

J1, J2 are cold

solder?

Parts

U710

U709

U13

J506

J723

Signals

+3VS

LVDS_TX[0..2]+

LVDS_TX[0..2]-

LVDS_CLK+

LVDS_CLK-

LVDS_ENBKL

H8_ENABKL

Parts

L10~L13

SW1

Signals

ENABKL

BLADJ

COVER_SW

Daughter BoardMain Board

MiTac Secret

Confidential Document

1 2 ... 111 112 113 114 115 116 117 118 119 120 121 ... 137 138

Commentaires sur ces manuels

Pas de commentaire

MiTAC 8050QMA Manuel de service Page 116

Commentaires sur ces manuels

Produits connexes et manuels pour Carnets de notes MiTAC 8050QMA