Sharp AR-650

[BlueCopy]

Have a Sharp AR-650/Toshiba E-65 that is making gray copies with fuzzy missing print areas. Ran diagnostics sims for copy quality and everything was normal. The developer unit was leaking dev material and so I replaced the unit. Copy looked a wee bit better, but still terrible. Customer recently added toner and when I ran the dev toner sensor sim, the add toner light flashed on and then off several times during the 2 minutes of the sim. The toner sensor reading was normal at 128. Ran sim to test toner motor and is seemed to come on fine.
I'm planning to change out the toner hopper unit in the AM to see if it is bound. Any other suggestions would be appreciated. I had another one of these copiers that was bound up, would not print and kept asking for toner, so I'm thinking it may be a problem with these machines?

[blackcat4866]

We had an AR-810 (very similar Toshiba build) in a very high volume location. I seem to recall 500k per month. The tech in that area was complaining that he had to change the developer every week to maintain the image quality. He could just stand there and watch it overtone, even after doing the exact procedure in the manual.

This is the procedure in the manual:
Replace developer. Hold 0 & 5 while turning ON > 200 > Start > after 2 min. adjust up/down # at lower right to achieve 240-245 @ upper left > Set > 290 > Start > turn Off/On.

Now to make this individual machine maintain toner density we kept lowering the numerical value at ~10 increments. Then ran 200 copies to stabilize toner density. It started looking good around a value of 190, and maintained the toner density for 500k copies.

Good luck. =^..^=

[mrfixit]

I hate that model. It recycles toner and it is recomended you vacuum out the toner recycling section at every service call, it kills the dev and causes backgrounding and poor density. The bulletin says to vacuum then run a few hundred skyshots, I usaully vac and replace the dev though. you can also change the new to recycled toner ratio in simulation, don't get to carried away though or it will back up.

[jpcopy]

mrfixit
do you need some cheap dev. for that machine. I've stop servicing those and have removed all of them from my area. have 15 btl of imagistics dev that will fit that machine. 25.00 btl.