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Troubleshooting
4-13
NovaJet 800 Series Service Manual
Symptoms Possible cause Solution
Table 4-1. Troubleshooting Table (cont).
• defective encoder clean encoder strip
strip
• bad MPWA replace MPWA
Keypad Locked-Up
or Not Functioning
Properly
• firmware 1) reset printer
problem
2) refresh or up-
grade firmware
(while in continuous
run state)
• keypad assembly replace keypad
damaged assembly
• faulty connection reseat or replace
between MPWA connector
and keypad
• bad MPWA replace MPWA
Noisy Operation
• ink or paper clean printer
debris in printer
• obstruction in remove obstruction/
path of carriage clean printer
• outirgger replace outrigger
bushings worn bushings