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Troubleshooting 4-11
NovaJet 500/630/700 Series Service Manual
Symptoms Possible cause Solution
Table 4-1. Troubleshooting Table (cont).
TROUBLE-
SHOOTING
Printer Output
is Banding
(Vertical)
• trailing cable reseat trailing
connections cable
• faulty trailing replace trailing
cable cable
• dirty encoder clean encoder
strip strip
Printer Output
is Banding
(Horizontally
and Vertically)
• bad MPCB replace MPCB
Keypad Locked-
Up or Not Func-
tioning Properly
• firmware 1) reset printer
problem
2) refresh or up-
grade firmware
• keypad assembly replace keypad
damaged assembly
• faulty connection reseat or replace
between MPCB connector
and keypad
• bad MPCB replace MPCB