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6.2
Periodic Check Points
To keep your GP unit in its best condition, please inspect the following points
periodically.
GP Operation Environment
• Is the operating temperature within the allowable range (0
• Is the operating humidity within the specified range (20% to 85% RH)?
• Is the operating atmosphere free of any corrosive gasses?
Electrical Specifications
• Is the input voltage appropriate (DC20.4V to DC27.6V) ?
Related Items
• Are all power cords and cables connected properly? Have any become loose?
• Are all mounting brackets holding the unit securely?
• Are there many scratches or traces of dirt on the installation gasket?
6.3
Changing the Backlight
The GP-37W3's backlight should not be replaced by a user.
Although a long-life cold-cathode tube is used for the backlight, it may need to be
replaced at some time, depending on the operating environment.
The service life of the backlight is as follows (The period when the brightness
decreases to about half the brightness of a new product after continuous illumina-
tion at normal temperature):
30,000 hours (Approx. 2.8 years)
For backlight replacement, contact your local GP distributor.
GP-37W3 Series User Manual
Chapter 6 - Maintenance
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6-3
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