I apologize but I need to opt out and open this to all experts.
I would like to try to help you with the problem, if it is not too late to try to do so.
If you need to remove the drum and do the cleaning of 'things generally' inside the printer, then there are some things that we need to be certain of, first:
1: is your printer a Samsung made printer, or is it a Ricoh Aficio model ?
2: have you ever replaced a drum before, in this printer? or in any printer?
OK. Two things you need to know:
1: the 'drum' or photosensitive roller, in any laser-type printer or copier, is very sensitive to damage. By being touched, being gotten wet with *any* kind of liquid, by being scraped or dinged, and by being wiped even with a *dry* cloth, and even by being out in the bright direct light for too long (i.e. over 1 1/4 minute or so of direct light of reasonable brightness per 1/2 hour.)
2: you cannot miss identifying a 'drum'. It is always shiny, metallic but colored, and (usually) blue-green.
Being able to take precautions (not touching the drum surface at all with anything, and putting it away in a dark emptied desk drawer or similar clean undisturbed dim place, which you are working on cleaning the printer) is all you need to take care of, with regard to removing or replacing a 'drum.'
Do you think you can manage that? or would you rather hire out the cleaning-maintenance e.g. to a servicing company? if 'no' to that last, I will give you further instructions.
My apologies. I frankly know less about sublimation ink printers than about laser printers.
So some of the advice I have offered so far is completely inapplicable! and I apologize.
But, in a way, that should make the task much simpler. In a non-laser-type printer (whether heat-transfer, inkjet, or sublimation-ink) you need to be careful mostly of one thing: touching, breaking or contaminating the printhead. The 'drum', is of course, nonexistent in such printers.
Re-reading your question's original posting with care for all details... it sounds actually rather like a laser printer problem: parts have become out of alignment with each other, probably owing to rather less than gentle or otherwise improper paper removal after a jam. And you mentioned a 'belt', which also suggests a laser printer.
I honestly do not know how to re-align this sort of printer, if the parts need re-aligning or the like. Usually the printer should re-align itself - which it has failed to do.
If there is a belt, there is a way for the printer to 'read' the belt's position.
If so, then it may not be the 'sensor' that 'reads' the belt's position (possibly by a tin-foil-like silver reflective patch or square on one edge of it) that needs cleaning, so much as that path that the sensor 'reads'.
But again - I am not sure I know my way around your sort of printer. I am advising you on general principles. Would you like to continue with me, or should I Opt Out of this case?
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