Hologic DISCOVERY A, Техническое руководство

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4-1
Section 4
ALIGNMENT AND CALIBRATION
4.1 Check Table Alignment
To check the table alignment, perform the following procedure:
1. Using a measuring tape, and referring to Figure 4-1, check the following:
• Distance from the edge of the table to the back of both T-rails (“A”
dimension).
• Distance between the T-rails (front and rear).
• Gap from the edge of the table bracket (left side) to the rail.
2. Record all the measurements.
3. Facing the front of the Discovery, gently push the foot end (left side) of the table.
The table should move away from, and then back, to its original position.
4. Check the “A” dimension and the bracket-to-guide rail gap again. Compare them
to their original values.
5. If all the measurements are within specification, the table is properly aligned. If
the measurements are not within specification, go to the Aligning Table section
below.
4.2 Align the Table
After you have taken the measurements in the Checking Table Alignment section, use the
procedures below to align the table. Note that if both the “A” dimension and the bracket-
to-guide rail gap are out of specification, you should recheck the measurements after
performing the first adjustment.
4.2.1 Table Edge to T-Rail (“A” Dimension) Adjustment
To change the “A” dimension, do the following:
1. Remove the outer and inner covers from the right pedestal.
2. Loosen the four bolts fastening the top of the pedestal and the four bolts fastening
the bottom of the pedestal (see Figure 4-2).
3. Adjust the table so the “A” dimension is within the specification.
4. Tighten the bolts and check the table alignment again.
If the alignment is within the specification, replace the pedestal covers. If you still note a
change in the “A” dimension, continue with the following steps.