Developer Initialization - Ricoh G-P2 Service Manual

G160 Service Manual
Toner End Detection
The machine detects toner end when the toner end sensor detects toner end 3 times in a row
3.1 seconds after toner was supplied. At this time, "Toner end" is recorded in the ID chip.
Toner End Recovery
The machine detects that the toner bottle was replaced if one of the following events occurs
during a toner end condition:
The top cover is opened and closed.
The main switch is turned off and on.
The machine then starts to supply toner to the development unit. After this, the machine
resets the toner end condition.
When "Toner near end" is detected, "Toner end recovery" is not done. If there is no
"Toner end" information in the ID chip, the machine detects that there is toner in the
toner bottle and "Toner end recovery" is done.

Developer Initialization

When the machine detects that a new PCU was installed, it initializes the developer.
To do this, the machine mixes the developer for a few seconds, and adjusts V
voltage for TD sensor) to make V
stores this V as V
T REF
During PCU initialization, the machine automatically supplies toner because there is no toner
in the toner supply pipe at installation. Then the machine does the process control self-check.
(TD sensor output) equal to 2.5 ± 0.1 volts. The machine
T
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