When to replace laser printer's photoconductor?

[MAMAFUFU]

I have a Lexmark laser printer and it is developing black and white bandings in graphics. I have tried shaking the ink cartridge but no improvement is seen.

I wonder whether it's because components inside the printer needs cleaning(what components, and how to clean?), or it's time to replace the photoconductor.

How can one tell a photoconductor's time is up?

 

[XMan]

Dark bandings on the page indicate that the cleaning blade has failed or that the charge wire inside the drum is contaminated. The white lines are because the transfer wire (which should be under the drum receptacle) is contaminated with paper dust or toner. Pull the drum and toner, blow it out with canned air, and replace the drum.