Hitachi CP-TW2503 User Manual page 140

Troubleshooting
Phenomena that may be easy to be mistaken for machine defects (continued)
Phenomenon
140
Cases not involving a machine defect
The FREEZE function is working.
FREEZE
Color settings are not correctly adjusted.
COLOR SPACE setting is not suitable.
The brightness and/or contrast are adjusted to an
extremely low level.
The projector is operating in Eco mode.
The lamp is approaching the end of its product lifetime.
When the internal temperature is high (even if the
ambient temperature is lower than 35°C), the brightness
of lamp might be reduced automatically.
Either the focus and/or horizontal phase settings are
not properly adjusted.
The projection window is dirty or misty.
may appear on screen.
The OVER SCAN ratio is too big.
Excessive VIDEO NR.
The FRAME LOCK function cannot work on the current
input signal.
FOCUS
Reference
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