HP Designjet 4520 Printer series - Manual (Page 183)

The front panel displays that the stacker is disconnected
If the front panel constantly or intermittently claims that the stacker is disconnected from the printer,
there may be a problem with the height of the stacker. Use the following procedure to adjust the height
of the stacker.
1. Using an hexagonal wrench, loosen the upper hexagonal nut on both of the stacker's wheels that
are closest to the printer.
2. Adjust the height of the stacker by rotating the lower hexagonal nut clockwise or anti-clockwise.
ENWW The front panel displays that the stacker is disconnected 173
S
tac
ke
r p
ro
b
le
m
s