OKI C3450n User Manual

							Replacing consumable items > 101
CLEANING THE LED HEAD
Clean the LED head when printing does not come out clearly, has 
white lines or when text is blurred.
1. Switch off the printer and open the top cover.
2.Gently wipe the LED head surface (1) with LED lens 
cleaner or soft tissue.
3.Close the top cover.
1 
CAUTION!
Do not use methyl alcohol or other solvents on the 
LED head as damage to the lens surface will occur.
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							Installing additional memory > 102
INSTALLING ADDITIONAL MEMORY
This section explains how to install additional RAM memory into 
your printer as a memory upgrade.
ORDER CODES
Use the following order codes for additional memory:
>64MB RAM – 01110301
>256MB RAM – 01110302
MEMORY UPGRADE
The basic printer model comes equipped with 32MB of main 
memory. This can be upgraded with an additional memory board 
containing 64MB or 256MB, giving a maximum total memory 
capacity of 288MB.
Installation takes a few minutes, and requires a medium size 
cross-head (Philips type) screwdriver.
1.Switch the printer off and disconnect the AC power cable.
2.Press the cover release and open the printer’s top cover 
fully.
WARNING!
If the printer has been powered on recently, the fuser 
will be hot. This area is clearly labelled. Do not touch.
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							Installing additional memory > 103
3.Remove each image drum units, starting with the front. 
Cover the image drum units to protect them from direct 
light 
4.Locate the two fasteners (1) at each side of the belt (3) 
and the lifting bar (2) at the front end. 
2 
1 
1
1 2 3 
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							Installing additional memory > 104
5.Unlock the fasteners and remove the belt as shown.
6.Carefully remove the new memory board from its 
wrapping. Try to handle the board only by its short edges, 
avoiding contact with any metal parts as far as possible. 
In particular, avoid touching the edge connector.
7.Notice that the memory board has a small cutout in the 
edge connector, which is closer to one end than the other.
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							Installing additional memory > 105
8.Identify the RAM expansion slot  in the printer. Unclip the 
plastic cover to open this slot.
9.If the RAM expansion slot already contains a memory 
upgrade board, that board will have to be removed before 
you can install the new one. To remove it proceed as 
follows, otherwise skip to step 10.
(a) Identify the locking clips at each end of the RAM 
expansion slot.
(b) Push the clips outward and back into the printer. The 
board will pop out slightly.
(c) Grip the board firmly by its short edges and pull it 
out of the slot.
(d) Place the removed memory board in the antistatic 
bag which originally contained the new memory 
board.
10.Hold the new memory board by its short edges, so that 
the edge connector faces in towards the RAM expansion 
slot, and the small cutout is closer to the bottom of the 
printer.
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							Installing additional memory > 106
11.Gently push the board into the RAM expansion slot until it 
latches in and will not go any further.
12.Close the RAM expansion slot.
13.Replace the belt and image drum units as described in 
“Replacing consumable items” on page 81.
14.Close the top cover of the printer.
15.Reconnect the AC power cable and switch the printer on.
16.When the printer is ready, print a menu map by holding 
down the ON LINE button on the Operation Panel for 2 
seconds.
17.Examine the first page of the menu map.
Near the top of the page, between the two horizontal lines, 
you will see the current printer configuration. This list 
contains the figure for total memory size.
This should indicate the total memory now installed, which 
should be the size of memory board you have installed plus 
32MB.
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							Troubleshooting > 107
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 printer should give years of reliable service. 
However, paper jams occasionally 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. When a jam 
occurs, the printer immediately stops, and the Alert LED on the 
Status Panel (together with the Status Monitor) informs you of 
the event. 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.
1.If a sheet is well advanced out of the top 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.
2.Press the cover release and open the printer’s top cover 
fully.
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							Troubleshooting > 108
3.Note the positions of the 4 cartridges.
It will be necessary to remove the four image drums to 
gain access to the paper path.
WARNING!
If the printer has been powered on, the fuser will be 
hot. This area is clearly labelled. Do not touch.
1
2
3
4
1. Cyan cartridge 2. Magenta cartridge
3. Yellow cartridge 4. Black cartridge
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							Troubleshooting > 109
4.Holding it by its top centre, lift the cyan image drum, 
complete with its toner cartridge (1), 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.
1 
CAUTION!
The green image drum surface at the base of the 
cartridge is very delicate and light sensitive. Do not 
touch it and do not expose it to normal room light for 
more than 5 minutes.
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							Troubleshooting > 110
6.Repeat this removal procedure for each of the remaining 
image drum units. Cover the image drum units to protect 
them from direct light.
7.Look into the printer to check whether any sheets of paper 
are visible on any part of the belt unit.
8.Remove any sheets of paper as follows: 
>To remove a sheet with its leading edge at the front of 
the belt (1), carefully lift the sheet from the belt and 
pull it forwards into the internal drum cavity and 
withdraw the sheet.
 
1 
CAUTION!
Do not use any sharp or abrasive objects to separate 
sheets from the belt. This may damage the belt 
surface.
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