Acer G226HQLBbd, G236HL, UM.VG6AA.B02, UM.WG6AA.B01 manual Troubleshooting, EN-21

Page 22

TROUBLESHOOTING

Before sending your LCD monitor for servicing, please check the trouble- shooting list below to see if you can self-diagnose the problem.

(VGA Mode)

Problems

Current Status

Remedy

 

 

 

 

LED ON

· Using OSD, adjust brightness and contrast

 

 

 

to maximum or reset to their default

 

 

 

settings.

 

 

 

 

 

LED OFF

·

Check the power switch.

 

 

 

No Picture

 

· Check if AC power cord is properly

 

 

connected to the monitor.

 

 

 

 

 

 

 

LED displays

· Check if video signal cable is properly

 

blinking blue

 

connected at the back of monitor.

 

 

 

 

 

· Check if the power of computer system is

 

 

 

ON.

 

 

 

 

Unstable

· Check if the specification of graphics

 

Picture

 

adapter and monitor is in compliance

 

 

 

which may be causing the input signal

 

 

 

frequency mismatch.

 

 

 

 

 

Display is

·

Using OSD, adjust RESOLUTION, CLOCK,

 

missing, center

 

CLOCK-PHASE, H-POSITION and V-

Abnormal

shift, or too

 

POSITION with non-standard signals.

small or too

 

 

Picture

·

Using OSD, in case of missing full-screen

large in display

 

 

 

image, please select other resolution or

 

size

 

 

 

other vertical refresh timing.

 

 

 

 

 

 

 

 

· Wait for a few seconds after adjusting the

 

 

 

size of the image before changing or

 

 

 

disconnecting the signal cable or powering

 

 

 

OFF the monitor.

 

 

 

 

EN-21

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Contents Table of Contents Special Notes on LCD Monitors EN-1Safe listening Safety instructionsEN-2 Tips and information for comfortable use Product servicingLCD Pixel Statement Finding your comfort zoneDeveloping good work habits Taking care of your visionEN-4 Unpacking EN-5Screen Position Adjustment EN-6Cleaning Your Monitor Connecting the Power CordSafety Precaution EN-7DDC EN-8Ground Connector PIN AssignmentPin Color Display Signal Cable Ground DDC-Serial ClockEN-10 EN-11 EN-12 EN-13 Installation EN-14EN-15 Acer eColor Management Operation instructions EN-16Adjusting the OSD settings EN-17EN-18 EN-19 EN-20 Troubleshooting EN-21DVI mode EN-22Declaration of Conformity Federal Communications Commission Declaration of Conformity