Sensor Malfunctions; Label Stop Sensor (Lss); Headlift Sensor - Intermec EasyCoder 501 XP Service Manual

17.11 Sensor
Malfunctions
Intermec EasyCoder 501 XP – Service Manual Ed. 4
Description:
Label (ticket) gap or black mark not detected by the label stop
sensor (LSS.)
Possible Causes and Suggested Remedies:
• Lost or obsolete media feed data, for example after a headlift or
change of media.
- Perform a TESTFEED operation, for example by simultane-
ously pressing the <Shift> and <Feed> keys.
• Bad LSS lateral alignment.
- Check that the gaps or marks actually pass through the label
stop sensor (lateral alignment), see Chapter 8.6.
• Light path obstructed.
- Check that both the upper and lower sensors are free from
dust.
- Check that the windows in the upper and lower guide plates
are clean and free from for example stuck labels.
• Printer set for wrong paper type.
- Check that the printer is correctly set up for the type of media
in use.
• Bad connection
- If the label stop sensor still does not operate correctly, check
the condition of its cables and that they are correctly con-
nected to the CPU board (lower sensor to P54; upper sensor
to P53.) Note that these two cables could be switched to
detect black marks at the top of the media.
• Faulty sensor.
- Replace as described in Chapter 8.6.
Description:
The printer does not work, although the printhead is lowered.
Error condition 1022 "Head lifted" is indicated at any attempt
of printing a label.
Possible Causes and Suggested Remedies:
• Headlift sensor arm loose or in wrong position.
- Check that the headlift sensor arm is fi rmly attached to the
headlift shaft and is properly adjusted, see Chapter 8.8.
• Headlift sensor blocked.
- Check the sensor for dust or foreign objects.
• Bad connection.
- Check that the sensor's cable is connected to P50 on the CPU
board. Inspect cable for damage.
• Faulty sensor.
- Replace as described in Chapter 8.8.
Chapter 17 Troubleshooting
153