ABI Prism® 7900HT Sequence Detection System ... - OpenWetWare

7-42 System Maintenance
To position the fixed-position bar code reader: (continued)
Step Action
5 Loosen the black positional adjustment knob on the fixed-position bar code reader,
and position the scan head of the reader as far as possible from the plate while
maintaining the orientation towards the bar code on the plate (see below)
GR2018
Scan head of the fixed-position
bar code reader
Black positional
adjustment knob
6 While watching the Terminal dialog box, slowly adjust the orientation of the
fixed-position bar code reader until the percent successful reading displays the
highest number possible.
Percent successful reads
Note It may be helpful to briefly place a sheet of white paper in front of the plate
bar code to view the area scanned by the laser.
7 When satisfied with the alignment, tighten the black positional adjustment knob on
the fixed-position bar code reader.
8 Restore the fixed-position bar code reader to normal operation:
a. From the Edit Configuration dialog box, change from Test back to Serial on Line.
Mode drop-down list
b. From the Device Control dialog box, confirm that EEPROM is still selected, and
click Send.
c. From the New Decision dialog box, click YES to save to EEPROM.
The bar code reader stops scanning the plate bar code and resumes normal
operation.
9 Click Exit ( ) to quit the LDHOST window.
The LDHOST window closes.
10 Replace the cover for the fixed-position bar code reader (from step 1 on
page 7-40).