KeyPad service manual
Rev.1.1
2.3 Digital Screen (LCD) is malfunctioning
Make sure that the voltage selector switch is set to the right
position (see figure 2)
With the system powered up, verify that the following message
is appearing for 5 seconds on the LCD screen:
If the startup message is not appearing or strange character are
displayed
o Replace the LCD monitor
After 5 second, the user should see the following:
If not, remove the bottom plate by removing the 4 screws
holding the feet in place and verify that the LCD ribbon cable is
fully inserted into the U1 connector (see figure 8 for detail)
Figure 8: LCD display ribbon cable position
Legend:
1. U1, LCD ribbon Cable
If the LCD display is still not working, please refer to the CPU section before
changing the digital screen.
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