IBM 4685-L0D Setup, Operation, And Service Manual page 71

Conditions
The reading laser
(VLD) comes on, the
scanner has difficulty
reading the bar code
label.
The scanner does not
read with one pass or
does not read at all.
Causes and actions
Possible causes
The bar code label is defective or smudged.
The bar code label is defective.
The bar code symbology is not enabled (for RS-232
model).
The scan window has flaws or is smudged.
The scanner has failed.
Actions:
1. Make sure the bar code label is in good condition.
If the bar code label is smudged, clear it.
If the bar code label is defective, enter the data
from the keyboard.
2. Try to read the bar code on another product. If the
scanner reads that code, it is in good condition.
3. Enable the bar code symbology using by program-
ming bar code (for RS-232 model).
4. Clean the scan window, or replace the scanner.
Replacement:
Scanner
Chapter 6. Maintenance information for service staff
6-3