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32
GT-1 User Manual
Replacing the lamp
The specified lamp lifetime is 1500 hours. For best performance and to minimize the risk
of lamp explosion, replace the lamp after 1000 hours of use.
To remove the lamp:
Remove the head shells and rear cover.
Disconnect and remove the fan assemblies from the top and bottom of the lamp
housing (1).
Turn the head so the top faces up. Pull the top of the ballast cover to unhook from
the stand-off spacers (2).
Unplug the lamp wires from the ballast (3).
Loosen the captive screws at each corner of the lamp housing assembly (4). Move
the assembly out of the way without disconnecting it (5).
Loosen the four 5.5 mm nuts that secure the lamp retaining clips (6).
Pivot the top clip away from the lamp (7). (On some models the top-left nut may
need to be fully removed.)
Remove the lamp and disconnect the lamp wires (8).
Inspect the UV shield and have it replaced if it is cracked or damaged (9). All optical
components must be in good condition to prevent injury from UV radiation.
Figure 18. Lamp removal
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