Question about HP OfficeJet R40xi InkJet Printer

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Replacing carriage belt on HP R40xi. I purchased a new carriage belt for a R40xi printer from Precision Roller, but the instructions were for a HP 722c which is totally different from the R40xi. So far I have removed the top lid, two T-10 torax screws, rear access door, and the panel above the rear access door.

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  • nwitt Dec 10, 2009

    His solution is to have some expert do it!!!

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The right and left front panels come off by pulling the inside edge outward, the shell above the print engine lifts off after removing all black torx screws and 2 silver torx screws in the back. This gives you access to the carriage assembly which will lift after the encoder strip is removed, by removing a screw on each end of the carriage shaft. The carriage belt locks in the carrier assembly by wrapping around a post. Best of luck to you in this ambitious endeavor!

Posted on Dec 11, 2009

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Replacing the old band and inserting the new band is just a one minute job.there are two mini white color or black color gears.one on left side and one on right side.on which the lining side of band has to be seated and exactly on the back side of the carriage there is a socket from where you have to pass the band .it actually hold the band tight there.its not difficult.but the difficult thing is to disassemble the printer.actually you have disassemble the complete printer to fit the carriage rubber band.as the carriage has to come out completely to do this.its very hard to reassemble if by chance you disassemble.its fitted on screws and hidden plastic locks inside the back side of the front plastic.you will require a normal screw driver and thin/strong knife.you will have to move the knife in between the sides where the knife gets blocked there will be lock.so then you have yo press that lock from knife and pull that side plastic bit up.there will be several locks.if any of the lock breaks that side plastic will not fit while reassembling.
so its advisable to get it done by a professional repair person familiar with this brand /model printer.as it will be safe and secure.
as there is no specific service manual provided by hp company.but the procedure is as follows
1)first the upper scanner assembly whole comes out.do not pull the assembly as the scanner cables needs to be removed before lifting the assembly.
2)then the sides comes out.the plastic sides.which are fitted with screws and locks.
3)then you reach the inner side.then a spring on the sides come out ,its very risky here,then the steel rod on which carriage moves comes out .
4)then the carriage comes out.
it requires lot of patience and concentration.if any mistake whole printer gets misaligned.
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the cost by the technician outside should not be very much as the cost of the part broken is not very much.
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This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya.

Posted on Dec 10, 2009

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