1-5
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1. Remove the rear cover on the collimator by removing four metric Phillips
head screws holding it in place. Remove the cover. See Illustration 1-4.
2. Close the collimator blades. This makes it easier to reach the lamp for removal
and replacement.
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3. Carefully remove the lamp by pulling it straight back and out of its receptacle.
Replace it with a new lamp. Refer to renewal parts listing for correct lamp.
4. Whenever a lamp is replaced the light field and x-ray field sizes must be checked
to be certain the difference between them does not exceed a specified maximum
tolerance. Refer to Section 1-4, Adjusting the Field Lamp, to make these measĆ
urements and any necessary adjustments.
ILLUSTRATION 1-4
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