5. Troubleshooting (continued)
5.3.2 Nothing displays on the screen (Screen is black and colour of LED is blue):
Refer "Checking the backlight unit" section"
OK
NG
OK
Proceed "Abnormal sreen" dection"
OK
NG
Check the video cable for failure. Check the host for output
signal with all black only.
1) Change pattern of video signal output on the host.
2) Reconnect the video cable.
3) Change the video cable. (VGA)
NG
OK
NG
Failure Point
The LVDS cable is disconnected.
Is backlight light up?
Does computer output
RGB video signals? (VGA)
Check OSD menu is
display on screen when you push
the "MENU" key.
Check if the LCD module
signal cable is connected between
the Interface Board and LCD
module.
OK
NG
OK
Failure Point
I301 is failure.
NG
Failure Point
1) Printed wire broke between CN301
pin9, 10, 11 and I301.
2) Check power board.
OK
Failure Point
1) Printed wire broke between Q302
Pin C and D301 Pin A.
2)D301 or Q302 is failure.
NG
Failure Point
1) Printed wire broke between I301
pin 2, and Q302 pin E.
2) I301 is failure.
NG
Check the 3.3V power are
supplied on I301 pin 2.
Check if the voltage on
I301 pin 3 that is power DC at 5V.
Check the 1.2V power are
supplied on D301.
Check if the voltage
on Q302 pin E that is power DC at
3.3V from I301.
Next Page
OK
47
ACER A211H/A221HQ
Содержание A211H
Страница 1: ...Model ID RG215AC CAU AN02 ACER_LCD_A211H A221HQ_SM20100512V1 ...
Страница 14: ...3 Exploded Diagram 3 1 Product Exploded Diagram 12 Go to contents page ACER A211H A221HQ ...
Страница 15: ...3 Exploded Diagram continued 3 2 Packing Exploded Diagram 13 Go to contents page ACER A211H A221HQ ...