HI I AM A SERVICE TECH BUT I HAVE A PROBLEM ON 2 YES 2 OKI C5400 THE FAULT IS FAINT
PRINT AND VERY POOR COPY QUALITY 60% OF THE TIME THE MACHINE WORKS FINE THEN IT WILL
JUST START PRINTING FAINT FOR NO REASON
EVEN TAKING ALL DRUMS OUT AND THE BELT OUT SWITCHING OFF AND ON REFITTING ABOVE DOES NOT CLEAR THE FAULT BUT THEN IT WILL SUDDENLY CLEAR ITSELF AND START WORKING RIGHT
I HAVE SERVICED BOTH MACHINES AND ONE OF THEM HAS HAD NEW DRUMS AND A NEW BELT PLEASE
CAN YOU HELP TA ANDY
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Re: faint print or colour missing V V URGENT
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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it means that your buffer is not storing the file you want it to print ... check you USB cable... INk in cartages also once get it serviced if have not ... and yes there i a big posibility that might you buffer have burned.. Regards
The way to identifiy your problem is to send a full colour print to your printer and open the top just as the paper starts to come out . if you then remove your toner / drums for all the colours you can see the transfer belt if the quality of the image that you can see on the transfer belt is good and clear your problem is with the transfer form the tranferbelt to the paper and not any toner /drum issue and the most likley cause is the transfer belt itself "but before you relpace it remove it and clean around the electrical contact points and generally make sure the internals of the printer is free of loose toner .
I am presuming the rest of the page prints the correct colour and this is an area in the direction of feed that is missing yellow. Try swapping the yellow and magenta drum positions and then the green text should come out a very dark blue colour. if it does then the fault is with the YELLOW drum, if there is still a noticeable Cyan stripe still then the fault will be with the LED head or engine control board.
To replace the drum - leave the toner in place and pull it upwards. This will remove the drum and toner together. Now release the toner from the drum. Fit the new drum - don't forget to remove the orange packing bar and replace the toner. Easy when you know how.