ViewSonic PJ556D User Manual page 36

Symptom
Remote control
doesn't work.
31
Cause
The battery could be weak.
The remote control s not
beng used wthn the effectve
range.
There are some obstructons
between the remote control
and projector.
There are some fluorescent or
other brght lghts shnng at
the projector's nfrared remote
sensor.
Solution
Replace wth a new battery.
Use the remote control wthn
the effectve range.
Check that there are not
obstructons between the
remote control and projector.
Check that there are not
any fluorescent or other
brght lghts shnng at the
projector's nfrared remote
sensor.
ViewSonic PJ556D