Kyocera KM-4230 Service Manual page 451

2A3/4
(3) Image is too light.
Causes
1. Insufficient toner.
2. Deteriorated developer.
3. Dirty or deteriorated drum.
(4) Background is visible.
Causes
1. Deteriorated developer.
3-6-6
Causes
1. Insufficient toner.
2. Deteriorated developer.
3. Dirty or deteriorated drum.
Check procedures/corrective measures
If the display shows the message requesting
toner replenishment, replace the cartridge.
Check the number of copies made with the
current developer. If it has reached the
specified limit, replace the developer.
Clean the drum or, if the maintenance level
has been reached, replace the drum (see
page 3-3-45).
Causes
1. Deteriorated developer.
Check procedures/corrective measures
Check the number of copies made with the
current developer. If it has reached the
specified limit, replace the developer.