Kyocera FS-1370DN Operation Manual page 87

>>Print Test Page ?
Using the Operation Panel
2
Press or repeatedly until >>Print Test Page appears.
3
Press [OK]. A question mark (?) appears.
4
Press [OK] again. Processing appears and a test page is printed
out.
5
When printing ends, the display returns to Ready.
Developer (Initializing the developer unit)
The replaced developer can be automatically fill up the toner using this
menu when a toner container is installed and the printer is turned on.
This is primarily used for maintenance by service representative.
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