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 Downloaded From ManualsPrinter.com Manuals
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 Downloaded From ManualsPrinter.com Manuals
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. Downloaded From ManualsPrinter.com Manuals
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 Downloaded From ManualsPrinter.com Manuals
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 Y K Downloaded From ManualsPrinter.com Manuals
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. Downloaded From ManualsPrinter.com Manuals
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). Downloaded From ManualsPrinter.com Manuals
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. Downloaded From ManualsPrinter.com Manuals
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 Downloaded From ManualsPrinter.com Manuals
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. Downloaded From ManualsPrinter.com Manuals