21) Developer Roller Counter Reset 1 (Ineffective)
21) Developer Roller Counter Reset 2 (Ineffective)
21) Developer Roller Counter Reset 3 (For the toner cartridge)
Since print density is likely to become darker as toner is getting older, the developing
bias is lowered by degrees according to the number of prints so that an almost fixed
density can be maintained from the start of the use of brand-new toner to the end of it.
The value of the developing bias is printed on the maintenance sheet. The developing
bias is a parameter which depends on the toner cartridge, so it needs to be reset when
the toner cartridge is replaced. At that time, the developing roller counter reading is
also reset. This mode is to enable to execute these operations (equivalent to those
done when the toner cartridge is replaced) manually from the service mode.
22) Fixed USB Speed Mode
This allows you to switch the setting of Full fixed/Auto switching (HIGH/FULL) of the
USB speed. Whenever switching, the current setting is changed to the other one.
The default setting is Auto switching.
It also allows you to check the selected setting by the Toner LED (Full fixed) or Drum
LED (Auto switching) being lit for 1 second when releasing the [Go] button.
When switch the
setting from Auto
switching to Full
fixed.
When switch the
setting from Full
fixed to Auto
switching.
Toner LED lights for 1 second.
Back
Cover
Toner
Drum
Paper
Status
Drum LED lights for 1 second.
Back
Cover
Toner
Drum
Paper
Status
6-12
Confidential