Service manual

LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 8.0 REPLACEMENT PARTS
8 - 7
Triple block line pair pattern trace (at center).
7. While gripping the locking ferrule (which you tightened when you put the fiber optic cable tip)
gently move the connector until you see amplitude changes in the line pair traces. You want to
achieve the best possible amplitude of the smallest line pair block. The actual amplitudes will vary some
from test pattern to test pattern. The vertical setting on the scope should be as sensitive as possible.
8. Once you are confident that you have the best possible amplitude tighten the two set screws firmly but
not too tight. Make sure the ferrule is still tight on the connector.
9. Scan the red Lumisys QA Test Pattern and view the image. The lines of tightest line pair pattern should
be distinct, though some aliasing will be evident.
8.3.3 GALVANOMETER REMOVAL
Turn power off
1. Remove the Main cover.
2. Remove the Galvo access cover.
2a. The Galvo Access Panel is on the rear bulkhead secured by six 5/16” nuts
3. Remove the Galvo driver board/bracket assembly from bulkhead.
3a. The bracket is secured to the bulkhead by two phillips head screws with
washers and one 5/16” hex head nut.
3b. Clip tie-wrap securing the Galvo Motor cable to bracket