C308 printing black only

[copier addict]

I disagree with this. I have many devices with drums expired & the quality is still perfect.

They are run on genuine toner so I assume yours aren't.

I have worked on 8 series machines since their launch and the drums have never lasted much past yield, OEM toner or otherwise.

[Synthohol]

i was carrying 8-12 DR314s as trunk stock because they sucked so bad and machines only ever used oem supplies and parts.
the charge rollers are just pathetic IMHO.

[tsbservice]

i was carrying 8-12 DR314s as trunk stock because they sucked so bad and machines only ever used oem supplies and parts.
the charge rollers are just pathetic IMHO.

313/315 i believe it's typo. 8 series low speed color office machines aren't bad at all IMHO.
We have a lot and most of them perform well under average usage. Those heavy used are our champs, I like Konica Minolta for that reason. You put them on stress and they just perform.

[KMFLT3CH]

Sometimes it's a glitch. Even if every life setting is turned off it still doesn't print. Switching it off and back on resets it. Sounds simple but it does work sometimes.

Came here to say this, I've come across this problem a handful of times on various models.

Re-enable all the life stop settings in service mode, tap End then back out to the ready to copy screen. Machine will probably be lit up like a christmas tree with all the warnings. Then back into service mode and disable all the warnings/life stop. Should be good then.

[kingarthur]

I have worked on 8 series machines since their launch and the drums have never lasted much past yield, OEM toner or otherwise.

I've got quite a few machines out there, that the drums have done nearly 3 times their life, and the cq is fine

[copier addict]

I've got quite a few machines out there, that the drums have done nearly 3 times their life, and the cq is fine

Maybe on the 4 and 4e series but never on the 8 series. Not in my experience.

[copyman]

It's all about the PCR roller. This prevents the newer drums lasting much past life like the older models 4 series, C220 series. I'm sure Kon/Min did this on purpose to make more money on drums / consumables. Their excuse was the change to PCR rollers was done to stop "ozones" that corona wires & sawtooth chargers create. Ha-ha

[copyman]

By the way thanks to everyone who replied. Going out to see customer after holiday's. Will install 3 new drums and update Firmware.

Happy Holiday's to all who celebrate.

[kingarthur]

Maybe on the 4 and 4e series but never on the 8 series. Not in my experience.

This is from a C258 we've got in the field - 1st column is the actual yield, 2nd column is what the yield is supposed to be, last column is the "arrival factor" basically the current percentage - this is in an architects doing mainly colour copying

Drum Unit (C) Rotation Time	17192	6539	262,92
Drum Unit (M) Rotation Time	13901	6539	212,59
Drum Unit (Y) Rotation Time	9079	6539	138,85
Drum Unit (K) Rotation Time	11468	6539	175,38

[copier addict]

This is from a C258 we've got in the field - 1st column is the actual yield, 2nd column is what the yield is supposed to be, last column is the "arrival factor" basically the current percentage - this is in an architects doing mainly colour copying

Drum Unit (C) Rotation Time	17192	6539	262,92
Drum Unit (M) Rotation Time	13901	6539	212,59
Drum Unit (Y) Rotation Time	9079	6539	138,85
Drum Unit (K) Rotation Time	11468	6539	175,38

You should be selling your secret. You could make real money.