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Even I change the tuner but it's appearse the same
If the copies look fine it is the toner hopper. It does not remove the seal from the bottle when closed. If the copies are getting light it could be the developer unit has worn out bushings and gears thus it does not turn properly making it impossible to sense the toner level and the constant add toner message. Usually you can hear noise if this is the case. Look at the oriface where the toner drops into the photoconductor unit from the toner unit. Is it full of toner coming out the top? If so, time to replace the PCU.
on Nov 08, 2013
Our Gestetner DSm415pf printer has
It's very easy to replace the drum unit. When you find Photoconductor unit there is a simple instruction on the box. You have to search for photoconductor unit type 1515 (also look for nashuatec, rex rotary, infotec or ricoh brands to see where you can find it on best price - 100EUR).
If your mashine is printing fine, there is no need to replace the drum. You can only reset PM counter display if mashine stops.
all the best
on Jun 18, 2011
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