2-13
Sub
Assemblies
F8-09
start
CPU will check toner density sensor output. (2.5 V)
CPU will adjust sensor gain
control signal
Memory number will be changed to new number in memory.
(
F6-21
or
F6-26
)
Toner density sensor output voltage will be adjusted to 2.5 V
Yes
No
(2) Maintain standard toner density
By checking the output voltage of the TDC sensor for every copy, the timing of
toner supply to the developer unit is controlled so that the output voltage is 2.5V
the at all times keeping the toner density constant.
Supply toner: from reserve tank for 6.7 seconds
(amount of toner supply: approx. 0.4 ~ 1.2 g)
Rotate bottle for 7 seconds: toner to reserve tank.
(Toner is not supplied to developer unit.)
Check TDC sensor output voltage at copying (or mixing).
Is the measured output voltage over 2.5V?
Do not supply toner.
Note) During bottle rotation toner is not supplied to
the developer unit.
YES
NO