Xerox 4250c 用户指南

Customer Replaceable Units (CRUs) are modules within the workings of the 
machine that you can replace when needed.  The machine monitors the number 
of copies made for service information purposes. This information helps maintain 
the machine’s productivity and image quality.  

When a module is nearing the end of its life, a message displays advising you to 
order a new module.  

When a module reaches the end of its life, a message displays advising you to 
replace the module.

To easily identify the Customer Replaceable Units the latches are colored orange.

Toner usage depends on the type and the number of images printed. The machine 
calculates how long the toner will last according to your usage of the machine and 
displays the information on the Machine Status - Service Information screen. It 
also uses this information to tell you when to order a new Toner Cartridge and 
when to install it. This facility allows you to control how the toner usage monitoring 
system works.

Select the Supplies tab and select the Toner Cartridge Reorder Notification 
button.

With the Toner Cartridge Status Enabled, the machine will analyze the toner usage 
to predict the percentage of toner remaining and display the information on the 
Machine Status - Service Information

 screen. When the percentage of toner 

remaining equals the number set in the window on this screen, a message will be 
displayed telling you to order a new Toner Cartridge. You can set the percentage 
level the message displays using the scroll buttons.

When the Toner Cartridge Reorder Notification threshold is reached a message will 
be displayed. Once you have a new Toner Cartridge you can turn the message off 
by selecting the Cancel Current Re-order Message(s) button. The machine will 
display a message when it is time to install the new Toner Cartridge.

When the Toner Cartridge Status is Disabled, the machine will not predict the 
toner usage and you will not receive a re-order reminder. The Machine Status - 
Service Information

 screen will say that the toner monitoring function is disabled. 

When the machine has run out of toner you will be told to replace the Toner 
Cartridge.

If you replace the Toner Cartridge when instructed to do so by the message on the 
display, the machine will assume that you have installed a new Toner Cartridge 
and reset the toner usage counters. However, if you choose to install a new Toner 
Cartridge before the message is displayed you will have to reset the toner usage 
counters manually by selecting the Confirm New Toner Cartridge Has Been 
Installed button.