Toshiba e-studio 2555c, Service Manual

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e-STUDIO2555C/3055C/3555C/4555C/5055C © 2012-2013 TOSHIBA TEC CORPORATION All rights reserved
OUTLINE OF THE MACHINE
3 - 72
3.13.4 Functions of the toner cartridge PC board (CTRG)
An IC chip is embedded in this board. Data such as identification information for the recommended
TOSHIBA toner cartridge, thresholds to determine if the cartridge is nearly empty, and controlling data
for the image quality to be optimal according to the toner characteristics are written in this chip.
To measure the amount of toner remaining in the cartridge, when the value of the counter for the period
of the toner cartridge rotation time 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 when the power is turned ON, the front cover is closed, a job is
finished and the equipment has recovered from the sleep mode.
[ 1 ] Data read by the toner cartridge PC board (CTRG)
• Data to identify recommended TOSHIBA toner cartridges
• Thresholds to determine if the toner cartridge is nearly empty
• Value of the counter for the period of the toner cartridge rotation time
• Data for optimizing image quality
• Threshold of toner remaining displays
[ 2 ] Functions
• Cartridge detecting function
This function checks whether the toner cartridge is inserted correctly or not, and whether the
recommended toner cartridge is used or not.
• Toner remaining check function
This function notifies the user of the near-empty status of toner. Normally, the message (Toner is
low) is displayed when the toner is running out, and (Toner empty) when the toner cartridge is
empty.
• Toner remaining check notification function
Upon detecting the near-empty status of toner, this function automatically notifies your service
representative.
• Image optimization function
This function controls the quality of images to be optimal according to the characteristics of the toner
used.
• Toner remaining display function
This function displays the remaining toner amount from 0% to 100%.
[ 3 ] Operations
A sign indicating that the toner cartridge is nearly empty appears in the following cases:
•
The counter value for the toner cartridge rotation time has exceeded the threshold previously written
in the toner cartridge PC board (CTRG). (Related code: 08-5155)
• The remaining amount of toner is equal to or less than the set amount (percentage or number of
sheets). (Related code: 08-5155, 5810, 5811)
When a used cartridge refilled with new toner is used, a sign indicating that the toner cartridge is empty
appears because information for determining the empty status is already written in the toner cartridge
PC board (CTRG).
When a non-recommended toner cartridge is used, "Toner not recognized" appears on the control
panel, and then the equipment may stop normal operations. The toner remaining display function, the
toner remaining check function, the automatic remote supply order to TOSHIBA sales representatives
and the image optimization function may also be disabled.
The self-diagnosis codes to adjust the timing for displaying the toner near-empty status are as follows.
• Toner near-empty status threshold setting (08-5155)
<Setting value>