Oki C3400N - Solid Black Print; Solid Black on a Full Page

Oki Data CONFIDENTIAL
43163501TH Rev. 1 167 /
Figure 7.3
7.5.3.(7) Solid Black Print
(7-1) Solid black on a full page
CH terminal
CH terminal
ID unit terminal
CH output
Confirmation Tasks
By visual inspection, look down to check whether high-voltage
terminal of left side of ID unit that protrudes from the equipment
is normal.
Check whether the high-voltage terminal of high-voltage board
is in normal contact state. Open the left cover and remove the
high-voltage board, check whether terminal is installed
abnormally.
By visual inspection, check whether the high-voltage terminals
of ID unit are normally contacted with contacting ASSY. (Please
refer to Figure 7.3)
When high-voltage probe is used as maintenance tool, please
open the left cover and check the CH output from solder side of
high-voltage board by high-voltage probe during printing.
(High-voltage probe is not a usual maintenance tool.)
Action at NG
Replace the terminal of
equipment side with a
new one.
Reinstall the terminal
normally.
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 132)
Replace the high-
voltage board with a
new one.
(7-1-1) High-voltage contact condition
(7-1-2) High-voltage output condition
Confirmation Items
Ground
Charge roller
Development roller