6-44 P/N 9-500-0255
Service Manual
Chapter 6: Maintenance—Remove and Replace Procedures
C-Arm Components—Remove and Replace
3.2.9 Light Field Lamp Assembly—Lamp Replacement
1. Remove the lower tubehead cover as per Section 3.2.1.
2. Remove the two screws that secure the lamp socket to the lamp housing (Figure
6-30, Item 1). Pull the lamp and socket out of the housing.
3. Remove the lamp from the socket. Press down on the bulb slightly while turning
it 1/4-turn to remove.
4. Using care not to get finger oil on bulb (by touching it), install the replacement
lamp into the socket, then install the socket into the lamp housing. Tighten the
mounting hardware.
5. Perform the following procedures prior to releasing the unit to the user:
• Section 7.11, Light Field Edge Contrast Check
• Section 7.12, Light Field Illuminance Check
3.2.10 Light Field Lamp Assembly—Fan Replacement
The Light Field Lamp Assembly Cooling Fan is mounted to the rear bracket of the
Light Field Lamp Assembly, directly in front of the Tubehead Control Board.
1. Remove the lower tubehead cover as per Section 3.2.1, and the upper C-arm
cover as per Section 3.1.2.
2. Disconnect the fan wiring harness from the receptacle on the Filament Protect
Board (Figure 6-16). Note the harness location if it is not labeled.
3. Remove the 2 screws that secure the fan to the fan mounting bracket. Pull the
fan out of the unit.
4. Install the replacement cooling fan by reversing this procedure. Before installing
the tubehead covers, apply power and verify that the fan operates.
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