FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 GENERAL, MECHANICAL/ELECTRICAL
98.04.24
M-42
1174SBM1206A
1. The ATDC Sensor installed in the Imaging Unit reads the toner-to-carrier ratio of the
developer in the Developer Mixing Chamber for each copy cycle.
2. It samples the ratio 16 times and compares each with the preset level.
3. If eight or more readings out of the total 16 are lower than the preset level, a Toner
Replenishing signal is output.
4. The Toner Replenishing Motor is turned one complete turn for each Toner Replenishing
signal (which is equivalent to a supply of 0.3 to 0.6 g toner).
✽ The readings taken while the Toner Replenishing Motor is turning (it takes 5 seconds for
the Toner Replenishing Motor to turn one complete turn) are ignored. This means that, in
a multi-copy cycle, the ATDC Sensor may take readings as the next copy cycle is started
while the Toner Replenishing Motor is turning; but, those readings are ignored.
12-6. Toner Replenishing Control
Control Signal Energized Deenergized WIRING DIAGRAM
M8 PWB-A PJ5A-6 H L 2-D
Control Signal Blocked Unblocked WIRING DIAGRAM
PC112 PWB-A PJ17A-2B L H 2-D
Control Signal Set T/C
Reference
Voltage
WIRING DIAGRAM
UN3 PWB-A PJ10A-3 6.0% 2.5 2-H
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