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Please check for causes of problems in accordance with the following chart before
contacting any maintenance personnel.
DISPLAY TROUBLESHOOTING
Symptom
Causes and Correction
Black screen, power
indicator light off
Check whether power cord is well connected, and whether this unit
is power on
Check whether the signal cord of input device is well connected
Check whether input device is power on
Image display
flicker, unstable
Check whether the input device signal is in this unit's specification
Check computer output mode: control panel-display-setup
If the setup does not accord with this unit’s specification, please
change the display setup
Horizontal scanning frequency: 30kHz ~ 75kHz
Vertical scanning frequency: 50 Hz ~ 75Hz
SOUND AND TV TROUBLESHOOTING
Symptom
Causes and Correction
Cannot power on
Please make sure the well connecting of power cord
No sound
Please make sure the well connecting of audio cord
Check volume
Make sure there is nothing plugged in the headphone jack
Volume too low
Check volume
If volume is still too low when adjusting volume to maximum, please
check whether the input device is well set
Snowy picture
Input antenna damaged or not well connected
Remote control
failure
Check whether remote control battery exhausted
Whether battery installation is correct
Whether obstacles exists between remote control and the unit’s
receiving window
Check whether receiving window has strong light
TROUBLESHOOTING