HP E8402A, User And Service Manual, Page: 212 / 249

214 Servicing Your Mainframe Chapter 5
6. Install the replacement impeller assembly by lining up the horizontal
slots on the bottom of the impeller assembly with the raised edges on
the mainframe. Slide the impeller assembly into the mainframe until
the impeller housing is over the screw locators.
7. Reconnect the impeller wires to the adapter board. Tighten the
impeller screws into the screw locators.
8. Replace the rear panel. Make certain that all 14 screws are secured.
Replacing the
Enhanced Monitor
Display Lamp
To replace the Enhanced Monitor back-light bulb:
1. Turn off the mainframe and remove the power cord.
2. Remove the rear panel. Refer to “Removing the Rear Panel from the
Mainframe” on page 207 for instructions.
3. Remove the mainframe cover by removing the ten m3x6 flat head
torx screws (five on each side of the mainframe). Refer to “Removing
the Mainframe Cover” on page 208.
4. Carefully remove the Enhanced Monitor PC board (three screws and
three ribbon cables). Unplug the bulb cord from the display driver PC
board. Refer to Figure 5-8.
5. Carefully remove the display assembly from the mainframe front
panel.
6. Slide the old bulb from the display and replace it with the new bulb.
7. Replace the display assembly.
8. Replace the Enhanced Monitor PC board. Reattach all cables.
9. Replace the mainframe cover and the rear panel. Make certain that all
screws are secured.
Figure 5-8. Replacing the Display Back-light Bulb
Remove/Replace
Bulb
Display