Operator`s manual
A-Class  111 
6.2  Warning and Fault Messages 
All printer functions are monitored. During operation, if not within a menu system branch or Test Mode, 
when a potential problem (Warning) or problem (Fault) is detected the printer will display a 
corresponding message. Message types, along with the possible solutions, are described below. 
Warning Messages: 
Warning Messages are low priority messages that alert to the possibility of a problem or to a pending 
change in printer configuration. Warning Messages are displayed for about three seconds.  
Printer Warning Messages 
Displayed Message  Description  Action(s) 
!
DOT FAILURE!
!!
The printer has detected defective 
printhead elements. 
Replace the printhead if the print 
quality becomes unacceptable. 
!
GAP MODE 
WARNING LOW BACKING!
!!
!
There is only a small difference 
between the measured ‘empty’ and 
‘gap’ sensor readings. 
Transparent backing or notched media 
typically gives this indication. In this 
case, there may be a slight delay in 
the ‘Out of Stock’ indication, after the 
media supply is emptied; no action is 
required. 
!
GOODBYE!
!
Power has been removed and 
shutdown is in progress. 
The printer power switch was turned 
‘Off’, the line fuse has blown, or AC 
line voltage has been lost. 
HEAD NEEDS CLEANING 
!!!
!
The scheduled printhead cleaning 
distance has been reached. 
Press and hold the TEST Key, or 
select ‘CLEAN HEAD NOW’. See 
Section 5.4.1 for details. 
!
HOST CHANGES PENDING!
!
The host has pending configuration 
changes that will not take effect 
until a ‘host reset command’ is 
issued. 
To save your changes, send a host 
reset command (in DPL), or to 
discard changes perform a soft reset; 
see Section 6.4.1. 
!
LOW VOLTAGE!
!
!
The printer has detected a low 
operating voltage. 
Possible low or fluctuating line 
voltage level. Try moving the printer 
to another outlet. If the condition 
persists, call for service. 
!
RTC RAM FAILURE!
!
!
The printer was unable to save 
settings in permanent memory. 
Possible faulty Main Logic Card. If 
the condition persists, call for 
service. 
!
TEMPERATURE PAUSE!
!!
A high printhead temperature has 
been detected. 
No action required. Printing will 
resume after the printhead cools. 










