Oce 7050 Technical & Service Manual page 38

Uneven background in feed direction
possible cause
grid polluted
SLA polluted
original glass polluted
pressure plate polluted
first few copies made with a
new drum
charging unit mis-aligned
height of the charging corona
wire
developing unit not level
distance between drum and
magnet roller not uniform
exposure lamp not correctly
mounted
lamp guard not straight
charge eraser 02PBA02 (partly)
defect
toner added too late
side cover open
ed. 6
action / remark
7 "Cleaning the charging
See Maintenance
unit"
clean with cleaner O
see Maintenance 7 "Cleaning the original
glass"
clean with cleaner A
make some more copies
check pressure blocks
put it in the groove
correct
check the position of the eccentrics
(See 05 Dev 304 adj. 4
See 04 Exp 401 adj. 1
press on plate
check with SDS test -3, +1 (See Faults
page 25
).
instruct the operator
close and instruct operator
)
Faults 7