Canon LBP7660Cdn Manual page 551

(1) [Device Basic Information]
The basic information about the printer is displayed.
(2) [Version Information]
The printer controller version is displayed.
(3) [System Manager Information]
Information about the registered system manager is displayed.
(4) [Usage Information]
The number of pages printed and the date of the last maintenance are displayed.
(5) Update Button
It refreshes the [Device Information] page display to the latest status.
(6) [Back to Page Top]
It moves the scroll box up to the top of the page.
[Check Counter] Page
The number of pages printed is displayed.
"Checking the Number of the Printed Pages"