Canon 4K6021Z User Manual page 211

Troubleshooting
■ You Cannot Project an Image Appropriately
Cause
The projected image is
inverted in the vertical or
horizontal direction.
A computer cable is
used in which some pins
are not connected.
■ The Projector Power Turns Off
Cause
The air intake or exhaust
vent is blocked.
The air filter is dirty.
The operating
environment is
inappropriate.
■ The Projector Cannot Join the Network
Cause
The LAN cable (shielded
twisted pair) is not
connected correctly.
The projector has not
been on long enough
(less than about 40
seconds).
Countermeasure
The ceiling mounted / rear projection setting is
incorrect. Check the [Image flip H/V] setting in the
[Install settings] menu (P128).
Use a computer cable in which all pins are
connected.
Countermeasure
Check whether the air intake or exhaust vent is
blocked. If the air intake or exhaust vent is blocked,
the temperature inside the projector will increase and
the power is automatically turned off to protect the
projector (The [WARNING] indicator and [TEMP]
indicator are lit.). Wait until the projector temperature
drops, then make sure that the intake and exhaust
vents are not blocked and turn on the projector (P22,
P28).
Check whether the air filter is clogged with dust.
If the air filter is clogged, replace the air filter (P191).
Check whether the operating temperature is between
0°C (32°F) and 45°C (113°F) (P21).
Projector settings must be adjusted when using the
projector at altitudes of 2,300 m (7,545.8') or higher.
In the [Install settings] menu, set [High altitude] under
[Professional settings] to [On] (P133).
Countermeasure
Check whether the LAN cable (shielded twisted pair)
is connected to the projector correctly (P65).
Network functions are not available until about 40
seconds after the projector is plugged in. Wait at
least 40 seconds, and then try to connect again
(P71).
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