5-34
5.2 Self-diagnostics/Machine Malfunctions
The self-diagnostic functions detect troubles in important components of the copier.
When any trouble occurs, the copier is stopped.
1. User error
NOTE: XXXX will appear in message display.
Error
code
Message Item See page
Uo INSERT KEY Key counter failure (option) or 4-34
or Access code number was not
INPUT IDENTIFICATION input
CODE XXX
U1 CLOSE FRONT PANEL Front cover failure 4-34
U4 CLOSE SORTER Sorter failure (option) 4-34
Sorter won't close securely.
U5 CLOSE DUPLEX UNIT Duplex unit failure 4-34
U6 CLOSE RIGHT SIDE PANEL Copier paper feed cover failure 4-35
U7 CLOSE RIGHT SIDE PANEL System console (option) paper 4-35
feed cover failure
U10 CLOSE ADF ADF (option) failure 4-35
U11 CLEAR SORTER BINS Sorter copy paper removal 4-35
NOTE: When clearing U11, all
paper is removed from bins.
U12 ADD STAPLES Sorter with stapler 4-36
U13 ADD TONER Toner level detection 4-36
U14 REPLACE WASTE TONER Waste toner bottle full 4-36
BOTTLE
U16 INSTALL DEVELOPER UNIT Developer unit is not installed 4-36
U17 — Sorter transport cover failure 4-36
U18 — Copy usage is upper limited. 4-36
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