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C2928M-A (4/07) 55
CHANGING THE AIR FILTER
Clean, cool air is vital for the proper operation of the PMCD750 display. The interval for changing the air filter is dependent upon the environment
that the display is used in. To determine the appropriate change interval, remove, inspect, and make a notation of the filter after three months of
operation. Repeat this process again after six months of operation. If changing the filter is not necessary after six months, repeat the inspection
after one year of operation. Based upon these observations, an appropriate replacement schedule can be established. The air filter can be
replaced from the front or rear of the unit.
REMOVING THE AIR FILTER FROM THE FRONT
Refer to Figure 38 and Figure 43 and do the following:
1. Turn off the AC power switch, and then remove the cord. Refer to the Shut-Down Sequence section.
2. Open the screen. Refer to the Opening a Screen Temporarily for Work section.
3. Loosen the screw securing the light shield.
4. Lift the light shield up, and then latch it open.
5. Lift out the air filter, tilting it toward the front of the chassis while lifting.
Figure 43. Open Light Shield and Air Filter
REMOVING THE AIR FILTER FROM THE REAR
Refer to Figure 41 and do the following:
1. Turn off the AC power switch, and then remove the cord. Refer to the Shut-Down Sequence section.
2. Remove the six 1/4-turn screws located on the rear panel.
3. Push the electronics module door open.
4. Reach through the opened electronics module door and loosen the light shield screw.
5. Push the light shield up until it latches out of the way.
6. Lift the air filter up and toward the front of the chassis, away from you.
AIR FILTER OPEN LIGHT SHIELD