Service manual

LUMISCAN ACR-2000 READER SERVICE MANUAL - SECTION 5.0 SERVICE ADJUSTMENTS
5-6
5.3.7 A properly positioned beam will show all 14 bars with a slight gap on either side. Position the beam
properly using the following chart. ( Note: The plot window does not update in real time to show beam
position changes. To see the results of an adjustment attempt, it is necessary to close the plot window
and press the “p” key again.)
Adjustment Directions
Make bars wider / Show fewer bars Turn R59 Galvo Span Clockwise
Make bars narrower / Show more bars Turn R59 Galvo Span Counter Clockwise
Move bars to the left Turn R58 Galvo Offset Clockwise
Move bars to the right Turn R58 Galvo Offset Counter Clockwise
5.3.8 If, after the beam has been properly positioned, the allowable parameters are met, proceed to 5.4.12.
5.3.9 Use R59 to adjust the Sum of Deltas to nominal.
5.3.10 Use R58 to adjust the Distance to first edge to nominal.
5.3.11 If the allowable parameters are not met, proceed to 5.4.19.
5.3.12 Use R45 and R47 on the Galvo Driver PCA to adjust CAL+ and CAL- to be as low as possible.
5.3.13 Use R59 to adjust the Sum of Deltas to nominal.
5.3.14 Use R58 to adjust the Distance to first edge to nominal.
5.3.15 Use R45 and R47 on the Galvo Driver PCA to adjust CAL+ and CAL- to be as low as possible.
5.3.16 Use R59 to adjust the Sum of Deltas to nominal.
5.3.17 Use R58 to adjust the Distance to first edge to nominal.
5.3.18 If the preferred parameters are met, the Scan Linearity Adjustment is completed. Press “q”
to quit the program. If the allowable parameters are met, it is left to the discretion of the Service Engineer
whether or not to try for the preferred parameters. Due to component aging it is sometimes not possible to
meet the preferred parameters. If the allowable parameters are not met, proceed to 5.3.19.
5.3.19 It is necessary at this point to perform Preliminary Scan Adjustment Method A or Preliminary
Scan Adjustment Method B. The purpose of this adjustment is to get the Scan Linearity close, so that when
the LNADJDT program is attempted again later, the parameters will be closer to nominal.