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OKI C5900N User Manual

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    							Replacing consumable items> 161
    REPLACING THE BELT UNIT
    The belt unit is located under the four image drums. This unit 
    requires replacement approximately every 60,000 pages.
    Switch off the printer and allow the fuser to cool for about 
    10 minutes before opening the cover.
    1.Press the cover release and open the printer’s top cover 
    fully.
    2.Note the positions of the four cartridges. It is essential 
    that they go back in the same order 
    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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    							Replacing consumable items> 162
    3.Lift each of the image drum units out of the printer and 
    place them in a safe place away from direct sources of 
    heat and light.
    4.Locate the two fasteners (5) at each side of the belt and 
    the lifting bar (6) at the front end.
    5.Turn the two fasteners 90° to the left. This will release the 
    belt from the printer chassis.
    6.Pull the lifting bar (6) upwards so that belt tilts up towards 
    the front, and withdraw the belt unit from the printer.
    CAUTION!
    The green image drum surface at the base of each 
    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. If the drum unit needs to be out of 
    the printer 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.
    5
    6
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    							Replacing consumable items> 163
    7.Lower the new belt unit into place, with the lifting bar at 
    the front and the drive gear towards the rear of the 
    printer. Locate the drive gear into the gear inside the 
    printer by the rear left corner of the unit, and lower the 
    belt unit flat inside the printer.
    8.Turn the two fasteners (5) 90° to the right until they lock. 
    This will secure the belt unit in place.
    9.Replace the four image drums, complete with their toner 
    cartridges, into the printer in the same sequence as they 
    came out: cyan (nearest the rear), magenta, yellow and 
    black (nearest the front).
    10.Finally, close the top cover and press down firmly at both 
    sides so that the cover latches closed.
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    							Replacing consumable items> 164
    FUSER REPLACEMENT
    The fuser is located inside the printer just behind the four image 
    drum units.
    Switch off the printer and allow the fuser to cool for about 
    10 minutes before opening the cover.
    1.Press the cover release and open the printer’s top cover 
    fully.
    2.Identify the fuser handle (1) on the top of the fuser unit.
    3.Pull the two fuser retaining levers (2) towards the front of 
    the printer so that they are fully upright.
    4.Holding the fuser by its handle (1), lift the fuser straight 
    up and out of the printer. If the fuser is still warm, place it 
    on a flat surface which will not be damaged by heat.
    WARNING!
    If the printer has recently been powered on, some fuser 
    components will be very hot. Handle the fuser with 
    extreme care, holding it only by its handle, which will 
    only be mildly warm to the touch. A warning label clearly 
    indicates the area. If in doubt, switch the printer off and 
    wait at least 10 minutes for the fuser to cool before 
    opening the printer cover.
    C
    M
    Y
    K
    1
    2
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    							Replacing consumable items> 165
    5.Remove the new fuser from its packaging and remove the 
    transit material.
    6.Holding the new fuser by its handle, make sure that it is 
    the correct way round. The retaining levers (2) should be 
    fully upright, and the two locating lugs (3) should be 
    towards you.
    7.Lower the fuser into the printer, locating the two lugs (3) 
    into their slots in the metal partition which separates the 
    fuser area from the image drums.
    8.Push the two retaining levers (2) towards the rear of the 
    printer to lock the fuser in place.
    Finally, close the top cover and press down firmly at both sides 
    so that the cover latches closed.
    32 2
    2C
    M
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    							Replacing consumable items> 166
    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 with LED lens cleaner or 
    soft tissue.
    3.Close the top cover.
    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 upgrades> 167
    INSTALLING UPGRADES
    This section explains how to install optional equipment into your 
    printer. This includes:
    >duplex (two-sided printing) unit;
    >additional RAM memory;
    >40GB hard disk drive.
    >additional paper tray
    >cabinet
    DUPLEX UNIT
    The duplex unit adds the function of two-sided printing, using 
    less paper and making large documents easier to handle. It also 
    enables booklet printing, which uses even less paper and makes 
    large documents even easier to handle.
    The duplex unit slides straight into the rear of the printer and 
    requires no tools to install.
    1.Unpack the new unit and remove any transit material from 
    it.
    2.Switch the printer off. It is not necessary to disconnect the 
    AC power cable.
    3.Ensure that the unit is the right way up, as shown, and 
    push it into the slot behind the rear panel. The panel will 
    swing inwards as you push the unit into it. Push the unit 
    all the way in until it stops and latches home.
    4.Switch the printer on and wait for it to warm up (about 
    1 minute).
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    							Installing upgrades> 168
    5.Print a menu map as follows:
    (a)Press the + button to access the Information Menu.
    (b)Press ENTER once for the menu map.
    (c)Press ENTER again to print the menu map.
    (d)When the menu map is printed, press ON LINE to 
    exit the menu system.
    6.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 
    should indicate that the duplex unit is now installed.
    All that remains is to adjust the Windows printer driver to 
    make full use of the new features.
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    							Installing upgrades> 169
    MEMORY UPGRADE
    The basic printer model comes equipped with 256MB of main 
    memory. This can be upgraded with an additional memory board 
    of 256MB or 512MB, giving a maximum total memory capacity of 
    768MB.
    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.
    3.Lift the front cover latch and pull open the front cover.
    4.Remove the screw (1) securing the right-hand side cover.
    WARNING!
    If the printer has been powered on recently, the fuser 
    will be hot. This area is clearly labelled. Do not touch.
    1
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    							Installing upgrades> 170
    5.Lift the edge of the side cover slightly at the two points 
    shown, and pull the cover away from the printer at the 
    top. Lift the cover slightly to detach it from the printer. 
    Place it safely to one side.
    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.
    8.Identify the RAM expansion slot (1) in the printer.
    
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