Pro-face PS-3700A, User Manual, Page: 111 / 131

Compact Panel Computer PS-3700A (Pentium
®
4M - 1.7GHz Model) User Manual
6-4
6.3 Changing the PS-A Backlight
The PS-A’s backlight can be changed after it wears out. The corresponding backlight model number is CA3-
BLU15-01. The steps involved are outlined below.
Follow the steps given below to change the PS-A’s backlight. Be sure to wear cotton gloves when performing
this work to prevent burns. Also, remove the PS-A from its installation panel, and place it face down (as
shown below) when performing this work.
(1) Unplug the PS-A’s power cord from the main power supply.
(2) Remove the PS-A’s rear cover.
• If the backlight or the display unit is damaged, the screen display will go out. Even
if the screen goes out, however, there is a possibility that the touch panel is still
operating correctly. Therefore, since any type of touch panel contact could have
an unexpected or dangerous effect or result, be sure not to touch the screen
when this condition occurs.
Whenever changing the backlight, be sure the PS-A’s power cord has been disconnected
and that the unit is cooled down.
When the PS-A’s power cord is connected and the PS-A is ON, high voltage runs through
the wires in the backlight area do not touch them!
When the PS-A’s power has just been turned OFF, the backlight area is still very hot!
Be sure to wear gloves to prevent being burned.
The backlight is very fragile. Do not touch the glass tube directly or try to remove its power
cord. If the glass tube breaks you may be injured.
Do not try to replace the backlight while the PS-A is installed in a cabinet or panel. Remove
the PS-A first, then begin the backlight replacement procedures.
• Be sure to perform the backlight changeover on a flat, level surface. This will pre-
vent damage to the PS-A unit and the accidental cutting of any of its power cord.
SEE
2.1.1 Removing the PS-A Unit's Cover (page2-2)