Acer RA19WAANU 5.2 Nothing displays on the screen (Screen is black and colour of LED is blue.), 20

1 36

5.Troubleshooting (continued)

5.2 Nothing displays on the screen (Screen is black and colour of LED is blue.)

Isbacklight lit?

Refer"Checking the backlight unit" s ection"

Doescomputer output RGB video signals?

CheckOSM menu is display on screen

whenyoupushthe"PROCEED"key.

Proceed"Abnormal sreen" dection"

Checkthe video cable for failure. Check the host for output signal is all

blackor not.

1)Change pattern of video signal output on the host.

2)Reconnect the video cable.

3)Change the video cable.

NG Checkif the LCD video signal cable is connected between the Int erface

Boardand LCD module.

FailurePoint

TheLCD video signal cable is disconnected.

Go to cover page

ACERX193HQ

Contents

Main Model ID:RA19WAANU Service Manual DBG DPBU IIDBG DPBU II Service ACER ACER_LCD_X193HQ_SM080904V1 Page Page . Page PresetTiming Chart . Page 2.1 MAIN OSD MENU Outline: ACERX193HQ 8 The description for control function: 2OSD Menu Page Page Page S4 S5 S2 S3 S1 S11 S10 S6 S12 S8 S7 Page S6 S5 S7 S3 S4 Page Page S20 S21 S22 S23 Page 5.2 Nothing displays on the screen (Screen is black and colour of LED is blue.) 20 5.2 Nothing displays on the screen (Screen is black and colour of LED is blue)continued 21 5.3Checking the back light unit 22 5.4 Abnormalscreen for VGA 23 5.5 Abnormalscreen (For the DVI) 24 5.6Abnormal OSM display adjust problem 25 5.7Abnormal plug and play operation for VGA 26 5.8 Abnormalplug and play operation (For the DVI) 27 28 5.Troubleshooting (continued) 5.9.2Checking the control circuit of vertical sync pluse 5.10Checking the resolution change IC movement 29 5.11Checking the DC/DC converter circuit 30 5.Troubleshooting (continued) Page Page cedid Page LCD Flat Panel Interface Board Interface Board Audio line input Video Signal input DDC& Function key input