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Caution
SEVERE DAMAGE TO THE PRINTHEAD
CARRIAGE CIRCUIT BOARD AND PRINT-
HEAD WILL OCCUR IF A PRINTHEAD IS
REMOVED WHILE POWER IS SUPPLIED TO
THE PRINTHEAD. Repairing this damage will
require a service call and replacement of the print-
head carriage circuit board and printhead at cus-
tomer expense.
To avoid electrical damage to the printhead carriage
circuit board and printhead:
Follow the instructions in the DisplayMaker Mach
12 User Manual to replace printheads.
DO NOT remove any printhead without first pressing
the Carriage or Prime keys on the control panel.
Pressing the Carriage key will move the printhead
carriage to the center of the platen; pressing the
Prime key will move the carriage out of the service
station to the prime position. Pressing either key will
cut power to the printheads, allowing you to safely
remove and replace printheads.
DO NOT disable the “cover open” switches on the
top cover or prime access door. When the printer
detects that either of these doors is open, it cuts
power to the printheads, making it safe to remove
and replace printheads. If these switches are dis-
abled, the printer can no longer detect whether the
doors are open, making electrical damage more
likely.