Sub Hopper Toner Replenishing Mechanism; Sub Hopper Toner Empty Detection Control - Minolta Di251 Service Manual

13-7.

Sub Hopper Toner Replenishing Mechanism

• The Sub Hopper Toner Replenishing Motor replenishes toner from the Sub Hopper to the
Developer Mixing Chamber.
• The toner replenishing time is determined according to the T/C reading.
Electrical Component
M7
13-8.

Sub Hopper Toner Empty Detection Control

• If T/C is not recovered to a level of 13 % or higher within a given period of time after the
copier has entered the T/C recovery mode, a toner-empty condition is detected.
Given period of time: 35-cpm copier = 150 s; 25/20-cpm copier = approx. 209 s
• If T/C drops below 7 % as a result of making additional copies after the toner-empty con-
dition has been detected of the Sub Hopper, a defective ATDC Sensor results and the
copier displays the corresponding malfunction code.
20-cpm copier: U.S.A. and Canada Only
Sub Hopper
Sub Hopper Toner Replenishing Motor M7
Control Signal Energized Deenergized
PJ3A-14A
M-28
L H
4011M005AA
Wiring Diagram
6-I