Unilumin ULW III, Product Manual

Page: 72 / 86

Chapter 6 Troubleshooting and Component Replacement
62
Chapter 6 Troubleshooting and Component
Replacement
6.1 Common Faults and Troubleshooting Methods
6.1.1 Failure in Lighting up the Display
Causes:
1) No power is supplied to the display or the control devices.
2) The LED display does not have input signals.
3) The control PC is in sleep mode or the graphics card is set incorrectly.
Troubleshooting method:
1) Check AC power input of the display and the control devices.
2) Check cables between the sending box and the receiving card. Check whether
the DVI cable between the control PC and the sending box is connected reliably.
3) Check whether the control PC is in sleep mode or monitor protection mode. If the
control PC is not in sleep mode, check whether the graphics card is configured
properly on the software.
6.1.2 Incomplete Picture or Incorrect Position of Picture Displayed
Causes:
1) The connecting file for the screen is incorrect.
2) Receiving card signal cables between cabinets do not contact properly.
3) The displaying position and screen size are set incorrectly.
Troubleshooting method:
1) Check whether the
display’s signal cable connection method is same to that of the
loaded file xxxx.scr.
2) Check whether the signal cable is connected to the cabinet receiving card. If the
receiving card is faulty, replace the receiving card.
3) Check whether Displaying Position and Screen Size on the software are set to
actual screen size.