Assuming that you are using the same paper and have not changed any of the consumables you should do the following: 1.Clean LED head with lens cleaner or soft tissue.
Remove the toner cartridge and give it a few shakes then reinstall it.
The Toner Could be low so Change toner cartridge.
4.Make sure that the paper is not damp as this will cause fading and poor quality printing and images.
The image drum may have been light contaminated so remove it from the printer and store it in a totally dark place for several hours then reinstall it.
If the image drum is dirty then wipe it very gently with soft tissues, being careful not to scratch it.
Open the top cover and check to be sure that each toner cartridge is fully seated and that each toner cartridge lock lever is pushed all the way back.
Press the top cover release latch and open, then close, the cover.
Check MEDIA MENU – TRAY1 MEDIA TYPE and set as required. Do the same for TRAY2 and MPT.
Check MEDIA MENU – TRAY1 MEDIA WEIGHT and set as required. Do the same for TRAY2 and MPT.
Possibly set the value of media weight in the menu to the next heaviest one.
Check PRINT MENU – RESOLUTION setting and set to 600 x 1200DPI
Check PRINT MENU – TONER SAVE MODE and make sure this is OFF
Check PRINT MENU – MONO PRINT SPEED and make sure this is set to MIXED SPEED
Assuming that you are using the same paper and have not changed any of the consumables you should do the following: 1.Clean LED head with lens cleaner or soft tissue.
Remove the toner cartridge and give it a few shakes then reinstall it.
The Toner Could be low so Change toner cartridge.
4.Make sure that the paper is not damp as this will cause fading and poor quality printing and images.
The image drum may have been light contaminated so remove it from the printer and store it in a totally dark place for several hours then reinstall it.
If the image drum is dirty then wipe it very gently with soft tissues, being careful not to scratch it.
Open the top cover and check to be sure that each toner cartridge is fully seated and that each toner cartridge lock lever is pushed all the way back.
Press the top cover release latch and open, then close, the cover.
Check MEDIA MENU – TRAY1 MEDIA TYPE and set as required. Do the same for TRAY2 and MPT.
Check MEDIA MENU – TRAY1 MEDIA WEIGHT and set as required. Do the same for TRAY2 and MPT.
Possibly set the value of media weight in the menu to the next heaviest one.
Check PRINT MENU – RESOLUTION setting and set to 600 x 1200DPI
Check PRINT MENU – TONER SAVE MODE and make sure this is OFF
Check PRINT MENU – MONO PRINT SPEED and make sure this is set to MIXED SPEED
Check the COLOUR MENU – DENSITY CONTROL and set this to AUTO
Check the COLOUR MENU – AUTO DENSITY and set this to EXECUTE
Check the COLOUR MENU – CMY 100% DENSITY is set to ENABLE if you want a glossier black finish.
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It is unlikely to be the printer (not impossible but unlikely) have you checked the settings on your computer, make sure you have not selected print in greyscale in the print options.
The manuals are available here: ( http://www.c5400.co.uk/index.asp?printername=C5400&menumode=0&content=c5400downloads )
Perhaps drum exposed to sunlight too long. It will ruin drum.
Could be foreign material inside drum or printer.
Run heavy stock through printer with nothing on page, to do this-
Open up Word. type a period, or a comma.
Print 10-20 copies.
This may clear it up.
Assuming that you are using the same paper and have not changed any of the consumables you should do the following: 1.Clean LED head with lens cleaner or soft tissue.
Remove the toner cartridge and give it a few shakes then reinstall it.
The Toner Could be low so Change toner cartridge.
4.Make sure that the paper is not damp as this will cause fading and poor quality printing and images.
The image drum may have been light contaminated so remove it from the printer and store it in a totally dark place for several hours then reinstall it.
If the image drum is dirty then wipe it very gently with soft tissues, being careful not to scratch it.
Open the top cover and check to be sure that each toner cartridge is fully seated and that each toner cartridge lock lever is pushed all the way back.
Press the top cover release latch and open, then close, the cover.
Check MEDIA MENU – TRAY1 MEDIA TYPE and set as required. Do the same for TRAY2 and MPT.
Check MEDIA MENU – TRAY1 MEDIA WEIGHT and set as required. Do the same for TRAY2 and MPT.
Possibly set the value of media weight in the menu to the next heaviest one.
Check PRINT MENU – RESOLUTION setting and set to 600 x 1200DPI
Check PRINT MENU – TONER SAVE MODE and make sure this is OFF
Check PRINT MENU – MONO PRINT SPEED and make sure this is set to MIXED SPEED
I'm not an expert on these but I'd guess either the high voltage unit or LED laser PSU are suffering from an intermittent problem. If you're lucky it's just a loose connector - but I'll bet you've already tried re-seating every connector you can find :)
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