OKI MB480 User Manual

							
151 • Maintenance
3.Moisten a soft, clean, lint-free cloth  and gently wipe the LED head surface.
4. Close the top cover and press down firmly so that the cover latches closed.
5. Gently lower the scanner.
Caution!
Do not use methyl alcohol or other solv ents on the LED head as damage to 
the lens surface will occur.
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152 • Installing options
Installing options
The following options are available to extend the performance of your printer:
• 64, 256 RAM DIMM: to extend the main me mory of your printer and speed up the 
processing of large files.
• Second paper tray: to increase your printer’s paper handling capacity by 530 
sheets (75 g/m
2)
Option order numbers
Installation procedure
To install any of the above options, follow the detailed installation sheet that 
accompanies the option.
OPTIONSORDER NUMBER
64MB RAM DIMM 44029504
256MB RAM DIMM 44029509
Second Paper Tray 43990707
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153 • Troubleshooting
Troubleshooting __________________
Clearing paper jams
Provided that you follow the recommendations in this guide on use of print media, 
and you keep the media in good condition prior to use, your MFP should give years of 
reliable service. However, paper jams occasion ally do occur, and this section explains 
how to clear them quickly and simply.
Jams can occur due to paper misfeeding from  a paper tray or at any point on the 
paper path through the printer or sca nner ADF. When a jam occurs, the MFP 
immediately stops. If printing multiple pages  (or copies), do not assume that, having 
cleared an obvious sheet, others will not also be stopped somewhere along the path. 
These must also be removed in order to clear the jam fully and restore normal 
operation.
In the scanner ADF section...
In the event of a paper jam, follow the procedures below to remove the paper:
1. Lift the ADF cover (1).
2. Remove any loose paper from the entry to the sheet feeder.
3. If there is any paper trapped in the feed mechanism:
a. Lift the feeder mechanis m by the coloured tab (2).
1
2
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154 • Troubleshooting
b. Remove any paper from ADF mechanism.
4. Lower the ADF cover.
5. Press the Stop button to restore the scanning head to the correct position.
In the printer section...
1.Lift the scanner.
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155 • Troubleshooting
2.If a sheet is well advanced out of the to p of the printer, simply grip it and pull 
gently to draw it fully out. If it does not remove easily, do not use excessive 
force. It can be removed from the rear later.
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156 • Troubleshooting
3.Press the cover release (a) and open the MFP’s top cover (b) fully.
Warning!
If the MFP has been powe red on, the fuser will be hot. This area is 
clearly labelled. Do not touch.
a
b
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157 • Troubleshooting
4.Holding it by its top centre, lift the image drum, complete with its toner cartridge, 
up and out of the printer.
5. Put the cartridge down gently onto a piece of paper to prevent toner from 
marking your furniture and to avoid  damaging the green drum surface. 
Caution!
The green image drum surface at the ba se of the cartridge is very delicate 
and light sensitive. Do not touch it an d do not expose it to normal room 
light for more than 5 minutes. If the  drum unit needs to be out of the MFP 
for longer than  this, please wrap the cartridge inside a black plastic bag to 
keep it away from light. Never expose  the drum to direct sunlight or very 
bright room lighting.
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158 • Troubleshooting
6.Remove any jammed sheets from the paper path.
7. Holding the complete assembly by its top centre, lower it into place in the MFP, 
locating the pegs at each end into thei r slots in the sides of the MFP cavity.
8. Lower the top cover but do not press down to latch it closed yet. This will protect 
the drums from excessive exposure to room lighting while you check the 
remaining areas for jammed sheets.
9. Open the rear cover and check for a sheet of paper in the rear path area.
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159 • Troubleshooting
Pull out any sheets found in this area.
If the sheet is low down in this area and difficult to remove, it is probably still 
gripped by the fuser. In this case raise the top cover, reach around and press down 
on the fuser pressure release lever.
10. If you are not using the rear exit tray, close it once paper has been removed from 
this area.
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160 • Troubleshooting
11.Remove the Duplex Unit (1) and check for any paper in this area. Remove any 
paper and replace the duplex unit..
Note
If the paper is not advanced enough to grip, push the cover (2) in the 
arrow direction, raise it and remove the paper. Refit duplex unit.
1
2
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