Datamax W-Class Maintenance Manual page 56

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Troubleshooting
Fault Messages (continued)
Description
The printer has detected a
Direct Memory Access
failure.
Consistently low sensor
readings were detected.
Consistently high sensor
readings were detected.
The scheduled printhead
cleaning has been exceeded
by an amount equal to three
times the pre-programmed
distance.
The optical sensor cannot
detect the position of the
printhead assembly.
3-4
Possible Solution(s)
1) Try cycling the printer power 'Off' and
'On' to clear the fault.
2) Replace the main logic board; see
Section 4.10.
Press any key to continue.
1) Ensure that media was inserted in the
media sensor during the appropriate
calibration step.
2) Ensure that the sensor is free of debris.
Retry the calibration. If the problem persists,
try 'Advanced Entry Calibration'; see
Section 2.1.3.
Press any key to continue.
1) Ensure that the media was removed from
the media sensor during the appropriate
calibration step.
2) Ensure that no labels are stuck in the
media sensor.
Retry the calibration. If the problem persists:
1) Possible loose Media Sensor cable.
2) The media sensor may be defective.
Replace the sensor; see Section 4.9.
3) The main logic board may be defective.
Replace the board; see Section 4.10.
Press and hold the TEST Key, or select
'CLEAN HEAD NOW'. See Section 2.4.1
for details.
Press any key to continue.
1) Ensure that the printhead assembly is
locked in the down position.
2) The Head-Up Sensor may be defective.
Replace the sensor.
2) The main logic board may be defective.
Replace the board; see Section 4.10.