226 Intermec EasyCoder PF2i, PF4i, and PF4i Compact Industrial—Service Manual
Chapter 15—Troubleshooting
Headlift Sensor
Description:
• The printer does not work, although the printhead is lowered.
• Error condition 1022 “Head lifted” (FP) or “Print Head UP/Press Feed”
(IPL) is indicated at any attempt of printing a label.
Possible Causes and Suggested Remedies:
• Headlift sensor blocked.
- Check the sensor for dust or foreign objects.
• Bad connection.
- Check that the sensor’s cable is connected to J58 on the CPU board.
Inspect cable for damage.
• Faulty sensor.
- Replace as described in Chapter 7.7.
Label Taken Sensor (LTS)
Description:
The label taken sensor (LTS) is not working properly.
Possible Causes and Suggested Remedies:
• Intermec Fingerprint instruction missing.
- The LTS must either be enabled using an LTS& ON statement, or
the status of the LTS must be polled using a PRSTAT function in the
current Intermec Fingerprint program.
• IPL instruction missing.
- The self-strip mode must be enabled using the commands
<STX>R<ETX> and <STX><SI>t1<ETX>.
• Bad connection.
- Check that the LTS is correctly connected to J53 on the CPU board.
- Check that the cable between CPU board and sensor is not damaged.
• Dirty sensor.
- Make sure that the active parts of the sensor are not obstructed by
dust or foreign objects.
• Wrong LTS sensitivity.
- The sensitivity of the sensor’s receiver and the light intensity of the
sensor’s emitter are adjustable, see Chapter 9.3.
• Interference from sunlight or lamps.
- Shield the sensor from interfering light source.
• Defective sensor.
- If still no reaction, the sensor is probably defective. Replace.
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