User`s manual

Chapter 7 - Maintenance
GP-477R/577R Series User's Manual
7-6
7) Insert the metal backlight cover's three positioning tabs into the
backlight's three positioning slots. Next, retighten the cover's two
attachment screws.
8) Reattach the backlight unit's power connector.
9) Repeat these steps for the GP's bottom backlight unit.
10) After both backlight units are changed and the power connectors
reattached, close the rear case and reattach the case's two attach-
ment screws.
• Be sure not to pinch or cut any of the GP's internal wiring
when closing the case.
• If the attachment screws are missing, check that they are not
left inside the GP's case. Turning the GP's power ON while
they are left inside the GP may cause troubles.
• When the replacement of the backlight is finished, turn on the
GP and make sure that the screen is displayed correctly. If the
unit malfunctions, please contact your Pro-face dealer for
service and advice.
5) Remove the old backlight unit.
6) Insert the new backlight into the unit.
The upper and lower backlight units are different.
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Important
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Important
The upper backlight unit can be distin-
guished by the arrowhead mark shown.
Install it on the upper side of your GP.
Note:
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