HP Color LaserJet Enterprise Flow M776z All-In-One Laser Printer - Manual (Page 224)

5. Make sure the tray is not overfilled by checking the stack-height markings inside the tray. If it is overfilled,
remove the entire stack of paper from the tray, straighten the stack, and then return some of the paper to
the tray.
The following examples show the stack-height markings in the trays for various printers. Most HP printers
have markings similar to these. Also make sure that all sheets of paper are below the tabs near the stack-
height marks. These tabs help hold the paper in the correct position as it enters the printer.
Figure 9-6 Stack-height markings
Figure 9-7 Tab for the paper stack
210 Chapter 9 Solve problems ENWW