Problems with Display operation
Maintenance/Troubleshooting
1-51
1.3.3 The Display does not turn ON (The initial
screen is not displayed. The screen remains
black.)
Is the status LED turned OFF or does it illuminate in orange?
Cause
The backlight burnout detection function is activated because the backlight is nearly
burnt out. Or, the power supply voltage supplied to the GP is low.
Solution
• When the status LED is turned OFF
Measure the power supply voltage of each GP unit and adjust it to the value within the
range of “Rated Voltage” specified in the manual or the Installation Guide. If the prob-
lem continues even after the power supply voltage is adjusted, please contact your
local GP distributor.
)
“1.7.2 Contact us!” (page 1-164)
• When the status LED illuminates in orange
Replace the backlight. If the problem continues after the replacement, please contact
your local GP distributor. If the status LED illuminates in orange soon after purchase,
please contact your local GP distributor.
An error message “RAAA005 The specified initial screen no. does not
exist.(xxxx)” was displayed.
Cause
The screen No. of the screen initially displayed at startup (initial screen) may be wrong
and a different screen may be displayed.
Solution
Confirm the setting of the initial screen No. For the procedure to change the setting, see
the following section.
)
• The backlight burnout detection function monitors the current consumed
by the GP. Depending on the failure type of the backlight, burnout may
not be detected, or may be detected earlier than complete burnout. If
this problem occurs soon after purchase, the GP may be faulty. In such a
case, please contact your local GP distributor.
