6
.5.3.(2) Background is dirty (Figure 7.2
B
)
(2-1) Background is dirty (partly)
(2-2) Background is dirty (totally)
Confirmation Items
Confirmation Tasks
Action at NG
(2-1-1) ID unit
Optical exposure of drum
Is the surface of the drum exposed to bright light for a
long time?
Replace the ID unit
with a new one.
When trying to use a
new ID unit, please
be careful not to
break the fuse with
jig inside the ID
unit. (Please refer to
page 176)
Leakage of toner
Does leakage of toner from ID unit or toner cartridge
occur?
Replace the ID unit
or toner cartridge
with new one. When
trying to use a new
ID unit, please be
careful not to break
the fuse with jig
inside the ID unit.
(Please refer to
page 176)
(2-1-2) Fuser
Offset toner of fuser
By visual inspection, check whether offset toner printed
for last time adheres to fuser.
Try to use waste
media to repeat the
empty print for offset
toner till print can be
normally performed.
Or replace the fuser
with a new one.
When trying to use
a new fuser, please
utilize the fuse
keep mode of the
maintenance utility.
(See Note! on page
199.)
Confirmation Items
Confirmation Tasks
Action at NG
(2-2-1) Media for printing
Media type
Check whether the printed media is especially thin.
Please use specified
paper.
(2-2-2) High-voltage terminals
ID unit terminals
By visual inspection, check whether the high-voltage
terminals of ID unit are normally contacted with
contacting ASSY. (Please refer to Figure 7-3)
Replace the ID unit
or correct the high-
voltage terminals.
When trying to use a
new ID unit, please
be careful not to
break the fuse with
jig inside the ID
unit. (Please refer to
page 176)
196
Service Manual
Y108500-4
