RICOH 2238C BLACK toner sigh on HELP!!!how to settle???

[bkwan101]

machine ricoh 2238 c .already add 1 black toner .but after 100 -200 copies machine will show toner sigh on .show toner finished .then i try to change other brand toner .but print about 100-200 copies machine show back the toner sigh .... how to repair ? pls ... help~

[TonerMunkeh]

When's the last time it had a black dev unit?

[bkwan101]

i alread change a new dev.unit .but after printing 100-200 copies .the problem same~

[teebee1234]

Sounds like it's not adding any toner, just using up what came in the dev unit. Probably a plugged hose or toner pump above the dev unit went south.

[zed255]

+1 for the toner attraction pump.

[TonerMunkeh]

Hang on - just re-read your original post. Are you using non-oem toner in this?

[bkwan101]

i use original toner ricoh 2238. when i add the toner i hear machine got pump the toner .but the print ok not blur .normaly when toner finished mc print blur.when i do the tuning TD Initialization show Failure 'K'..machine sc code 370...


any one got any ideal.... ? TD sensor ? toner problem? or ? pump motor ?

[TonerMunkeh]

According to the service manual the new developer unit you put in might be faulty. Try another if you have one.

[teebee1234]

The pump noise you're hearing is the one situated below the toner cartridges, not the attraction pump above the dev units. There are clutches on the attraction pumps that can fail, you may be pushing toner into the tube but the attraction pump is not sucking it down to the dev unit.
As TonerMunkeh suggested, replace the dev unit first. If the problem persists then replace the attraction pump (clean out the hose while you're at it).