Functions Of The Toner Cartridge Pc Board (Ctrg) - Toshiba e-STUDIO163 Service Manual

12.3.2

Functions of the toner cartridge PC board (CTRG)

The toner cartridge in this equipment mounts the toner cartridge PC board (CTRG). An IC chip is
embedded in this board, and the data identifying genuine TOSHIBA toner cartridge and thresholds
determining that the cartridge is nearly empty are written in this chip.
To measure the toner amount remaining in the toner cartridge, when the value of the toner cartridge
drive counter (08-1376) is updated, this equipment writes the updated value into the toner cartridge PC
board (CTRG).
These data written in the toner cartridge PC board (CTRG) enable the functions below, and accordingly
this equipment operates as shown below. Data reading is performed every time the power of this equip-
ment is turned ON and the front cover is closed.
[Data read by the toner cartridge PC board (CTRG)]
• Data to identify genuine TOSHIBA toner cartridges
• Thresholds to determine that the toner cartridge is nearly empty
• Toner cartridge drive counter values
[Functions]
• Cartridge detecting function (including detection of the use of a genuine TOSHIBA toner cartridge)
• Toner remaining check function
[Operations]
Toner cartridge Genuine cartridge
Cartridge detecting Enabled
function (The toner lamp blinks
when no cartridge is
installed.)
Toner remaining Enabled
check function (The toner lamp is lit
when the cartridge is
nearly empty.)
A sign of the status that the toner cartridge is nearly empty (= the behavior of the toner lamp) appears
when the value of the toner cartridge drive counter has exceeded the thresholds previously written in
the toner cartridge PC board (CTRG). When a used cartridge refilled with new toner is used, therefore,
the toner cartridge drive counter value in the toner cartridge PC board (CTRG) had already exceeded
the threshold to determine the near-empty status of the toner at this moment, so the sign of the near-
empty status appears immediately after the installation of this cartridge. When a non-genuine toner car-
tridge is used, the toner lamp blinks by the cartridge detecting function because its data cannot be read
out.
Since the difference between the toner cartridge drive counter values and the remaining amount of the
toner is unstable, the toner near-empty status threshold setting (08-****) is provided to adjust this differ-
ence.
The toner near-empty status threshold setting (08-****)
0: The period from the appearance of the toner near-empty sign to the actual complete
consumption of the toner is set long.
1: Normal (Default)
2: The period from the appearance of the toner near-empty sign to the actual complete
consumption of the toner is set short.
3: The sign of the status that the cartridge is nearly empty does not appear.
e-STUDIO163/203 DEVELOPMENT SYSTEM
Genuine cartridge
refilled with new toner
Enabled
(The toner lamp blinks
when no cartridge is
installed.)
Disabled
(The toner lamp is lit
when the cartridge is
still installed.)
12 - 4
Non-genuine cartridge
Disabled
(The toner lamp blinks to show that
no cartridge is installed, even if a car-
tridge is installed. Printing is
enabled.)
Disabled
December 2005 © TOSHIBA TEC