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  1. #1
    Field Supervisor 500+ Posts
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    mpc 4500 cyan toner not loading

    i removed the tx unit and all the drums. cheated the front door, turned on the cyan pump in output mode and nothing came out.i turned on the magenta pump and a load of toner came gushing out, same wit all the others apart from cyan. i changed the cyan toner pump brand new, nozzle assembley and the toner pipe which didnt make a difference. after doing numerous forced toner supply it still fails to load toner. i can see the toner is not actually gettiing to the other side of the pipe where the pump is but the toner is leaving the bottle.is there any chance it can be a faulty pump. machine is always trying to load cyan toner. i have tried different cartridges and still the same. the dev unit is new. new drum unit. VT display for cyan is 2.44vVTREF display is 1.80v as a temporary fix i turned off the toner end detection in sp3045. 3 days later the quality of the cyan was very good on print outs, eventhough the machine is heavily used.i dont understand whats going on. why is it not loading toner when i should do

  2. #2
    Field Supervisor 500+ Posts
    mpc 4500 cyan toner not loading

    Herrmann's Avatar
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    maybe, the cyan pump gets no voltage? are you able to connect the cyan pump connector to the one meant for the magenta pump and do the output mode again.... if then the toner appears, it must be something faulty in the triggering, maybe a broken wire or shot BICU
    If sometimes you feel a little useless, offended and depressed always remember that you were once the fastest and most victorious sperm of hundreds of millions!

  3. #3
    Field Supervisor 500+ Posts
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    when i turn on the pump i can hear it vibrate

  4. #4
    Senior Tech 100+ Posts
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    Blow down the toner pipes to make sure they are clear and not blocked. If they are clear id replace the pump first....had a couple go on me and think thats prolly the first thing to try. Also they are easy to replace!

  5. #5
    Field Supervisor 500+ Posts
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    ive already replaced the pump

  6. #6
    Senior Tech 100+ Posts
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    have u try changing the B223 3205 Nozzle Ass'y? i some reason the toner seal fail and stuff the pipe with some small seal lumbs. You can also try wacuum the pipes but its a temp fix.

    Hope this helps!

  7. #7
    Field Supervisor 500+ Posts
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    thanks for the reply but the nozzle assembley has already been replaced

  8. #8
    Technician 1nevster's Avatar
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    Are you using genuine Ricoh toner? Copy stuff blocks up

  9. #9
    Technician 1nevster's Avatar
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    There is also a firmware update for toner end condition if you check the m.b's carefully.

  10. #10
    Senior Tech 100+ Posts verderacer's Avatar
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    Have you tried replacing the clutch? Item 10 or 11.

    B222_PC_pg62.jpg
    Ricoh & Microsoft may pay the bills but Un*x saves my ass every day.
    MCSE/CCNE/ENS and other crap...

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