Laser light alignment

Prerequisites

Table 1 Personnel requirements
Required persons	Preliminary requirements	Procedure	Finalization
1	Not Applicable	10 minutes	Not Applicable

Table 2 Tools and test equipment
Item	Quantity	Effectivity	Part number	Manufacturer
Non-Ferrous Allen Wrench Set	1	-		-
Non-Ferrous Flat Blade Screwdriver	1	-		-

Verify that the bridge is centered. If not, center the bridge. Please see Bridge and Longitudinal Drive Belt Replacement procedure, and refer to the “X-Direction Bridge Alignment” and the “Z-Direction Bridge Alignment” sections.
Press the Alignment button on the control panel to turn on the laser light.
Check for proper alignment. The axial light should align with the joints of the bridge endcap and bridge on each side of the bridge and the sagittal light should align with the middle of the LPCA and the middle of the table. If alignment is correct, you are done with this procedure. Otherwise, continue with the steps that follow.

Figure 1. Proper alignment
For an In-Room display, remove the laser light cover by removing the two screws shown. The cover is held in place by two poppers (one in each lower corner of the laser cover).

Figure 2. Remove laser cover
Adjust the alignment via the joystick so that the axial light (x-axis) is aligned to the bridge and endcap joints on both sides of the bridge and the sagittal light (z-axis) is centered down the middle of the bridge. See Figure 1 for proper alignment.

note: There is only one joystick to adjust the laser light.

Figure 3. Adjusting laser lights with single joystick
Replace the trim ring as appropriate.

Complete DQA Calibration to calibrate isocenter by following the instructions in Troubleshooting the Daily Quality Assurance (DQA) II tool.
If this is an adjustment and no further calibrations are needed, then complete a SAVEINFO to save current system calibrations.