Oki MB451wMFP User Manual page 169

Note
 Do not use solvents, such as methyl alcohol or thinners.
They damage the LED head.
Close the top cover.
4
Close the scanner unit.
5
Memo
 If you dispose of a toner cartridge by necessity, put it in a
polyethylene bag or something and then dispose of it in
accordance with your municipality's ordinances or guidelines.
Replacing the Image Drum (MB461,
MB471, MB471w, MB491, ES4161
MFP, ES4191 MFP only)
Life Duration of Image Drum
When the [Image Drum Near Life] message
appears on the display screen, prepare a
replacement image drum.
If you continue printing, the message [Please
Replace the Image Drum] will be displayed
and printing will stop.
A guideline for replacing the image drum is every
30,000 pages or so for A4 sized paper (with
single-sided printing). However, this number of
pages is for printing with general conditions (3
pages at a time). Printing one page at a time
reduces the drum life by about half.
The actual number of printed pages may be
halved again relative to the above guideline,
depending on the printing conditions.
Note
 The actual number of pages you can print with the image
drum depends on how you use it. The above guideline may be
reduced by more than half, depending on the conditions of
printing.
Note
 The print quality may deteriorate after the toner cartridge
has been unpacked for a year. Replace it with a new one.
LED head
- 169 -
Procedure for Replacement
Note
 The image drum (the green tube) is very delicate. Handle
it carefully.
 Do not expose the image drum to direct sunlight or very
bright interior light (approximately more than 1500lux).
Even under the normal interior light, do not leave it for
more than 5 minutes.
 To ensure optimum performance, please use original Oki
Data consumables.
 Service for problems caused by the use of consumable
items other than genuine OKI consumables is not covered
under the warranty or in the maintenance contract. (This
does not apply to all faults occurring with non-original Oki
Data products; however, please bear this in mind when
using them.)
Open the top cover and remove the used
1
image drum.
Remove the image drum upward slowly.
If the image drum is removed, the toner
cartridge is also removed.
Memo
 When making duplex copies using the document glass, the
continuous scan mode is automatically enabled. Follow the
on-screen instructions.
Be sure not to throw used image
drum and toner cartridges into
fire; toner in the cartridges may
WARNING
scatter and ignite, causing burn
injuries.
Install a new image drum.
2
Take the new image drum out of the wrapping

bag. Remove the silica gel.
Silica gel
Replacing Consumable Items
8