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114 Troubleshooting
TROUBLESHOOTING CHART, CONTINUED
Print Quality, continued
Problem Probable Cause Solution
Scanner Will not Read
Barcodes
1. Barcode Density Too
Low
2. Vertical Misalignment
During Bi-Directional
Printing
3. Worn Out Ribbon
1. Set density in configuration
menu to 100 dpi (Page 91).
2. Re-adjust vertical alignment in
configuration menu (Page 93).
If necessary, turn off bi-
directional printing in
configuration menu (Page 73).
3. Replace ribbon (Page 100).
Try double strike printing
(Page 91).
Scanner Will not Read
PostNet Barcodes
1. See “Scanner Will not Read Barcodes” above
2. PostNet Mode (text
versus graphics)
2. Prefer PostNet text mode.
(See Appendix E.)
Italics (Epson Emulation)
Printout is ALL (or partly)
Italics and Should not Be
(Both Parallel and Serial
Interfaces)
Characters used are from
the Upper Half of the
Character Set
Use data bytes 32-127 for upright
characters and 160-255 for italic
characters.
Printout is ALL (or partly)
Italics and Should not Be
(Serial Interface Only)
Operating Systems Such
as UNIX Routinely Use
Characters in Upper Half
of Character Set
In configuration menu, change the
number of data bits in “Serial
Options” from 8 to 7 bits.
Print Positioning
Margin Drift Belt Too Loose or Motor
Failure
Call for service.
Print Shifts Right or Left
Until Carriage Hits
Bumper
Carriage Belt is Slipping
At Belt Clamp
Call for service.
Entire Paragraphs Print
Out on One Line
No Line Feeds From Host In configuration menu, change
"LF on CR" from "Off" to "On".