Operator`s manual
112  A-Class 
Fault Messages: 
Fault Messages are high priority messages to alert to an error condition in the printer. If more than one 
fault is detected, the display will cycle the different messages. 
 Note:   To return to normal operation following a fault, the fault must be corrected and then the FEED Key must 
be pressed to clear the condition. 
Printer Fault Messages 
Displayed Message  Description  Possible Solution(s) 
24V OUT OF TOLERANCE 
!
!
The printer has detected a drop in 
the 24-volt power supply. 
Try cycling the printer power ‘Off’ 
and ‘On’. If the fault does not clear, 
call for service. 
!
ADC FAULT!
!
The printer has detected an analog 
to digital circuit converter failure. 
Try cycling the printer power ‘Off’ 
and ‘On’. If the fault does not clear, 
call for service. 
!
DMA FAULT!
!
The printer has detected a Direct 
Memory Access failure. 
Try cycling the printer power ‘Off’ 
and ‘On’. If the fault does not clear, 
call for service. 
!
GAP MODE 
CANNOT CALIBRATE 
!
!
The printer has detected 
consistently low sensor readings 
for the media. 
Press any key to continue. Ensure that 
media was inserted in the media 
sensor during the appropriate 
calibration step; also ensure that the 
sensor is clean. Retry the calibration. 
If the problem persists, try the 
‘Advanced Entry Calibration’; see 
Section 5.1.3. 
!
GAP MODE 
FAULTY SENSOR!
!
!
!
The printer has detected 
consistently high sensor readings 
for the media. 
Press any key to continue. Ensure that 
media was removed from the media 
sensor during the appropriate 
calibration steps; also ensure that the 
sensor is clean. Retry the calibration. 
If the problem persists, call for 
service. 
!
HEAD CLEANING FAULT!
!!!
!
The scheduled printhead cleaning 
has been exceeded by an amount 
equal to three times the pre-
programmed distance. 
Press and hold the TEST Key, or 
select ‘CLEAN HEAD NOW’. See 
Section 5.4.1 for details. 
!
HEAD/COVER UP FAULT
!
!!!
!
The printhead is in the ‘up’ 
position or the Cover Sensor is 
open. 
Lower and lock the Head Lift Lever 
(see Section 3.4); or, close the Access 
Cover. 










