NEC Projector PA621U User Manual
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![Page 216
204
9. Appendix
Flicker appears on
screen
• Set [FAN MODE] to other than [HIGH ALTITUDE] mode when using the projector at altitudes approximately 5500
feet/1600 meters or lower� Using the projector at altitudes less than approximately 5500 feet/1600 meters and setting
to [HIGH ALTITUDE] can cause the lamp to overcool, causing the image to flicker � Switch [FAN MODE] to [AUTO]� (→
page 108)
Image is scrolling
vertically, horizontally
or both
• Check the computer’s resolution and...](http://img.usermanuals.tech/thumb/54/99624/w64_projector_manual_8415_d-215.png "Page 216
204
9. Appendix
Flicker appears on
screen
• Set [FAN MODE] to other than [HIGH ALTITUDE] mode when using the projector at altitudes approximately 5500
feet/1600 meters or lower� Using the projector at altitudes less than approximately 5500 feet/1600 meters and setting
to [HIGH ALTITUDE] can cause the lamp to overcool, causing the image to flicker � Switch [FAN MODE] to [AUTO]� (→
page 108)
Image is scrolling
vertically, horizontally
or both
• Check the computer’s resolution and...")
![Page 220
208
9. Appendix
In the space below please describe your problem in detail.
Information on application and environment where your projector is used
Projector
Model number:
Serial No�:
Date of purchase:
Lamp operating time (hours):
Eco Mode: OFF ON
Information on input signal:
Horizontal synch frequency [ ] kHz
Vertical synch frequency [ ] Hz
Synch polarity H (+) (−)
V (+) (−)
Synch type Separate Composite
Sync on Green
STATUS Indicator:
Steady light Orange Green
Flashing...](http://img.usermanuals.tech/thumb/54/99624/w64_projector_manual_8415_d-219.png "Page 220
208
9. Appendix
In the space below please describe your problem in detail.
Information on application and environment where your projector is used
Projector
Model number:
Serial No�:
Date of purchase:
Lamp operating time (hours):
Eco Mode: OFF ON
Information on input signal:
Horizontal synch frequency [ ] kHz
Vertical synch frequency [ ] Hz
Synch polarity H (+) (−)
V (+) (−)
Synch type Separate Composite
Sync on Green
STATUS Indicator:
Steady light Orange Green
Flashing...")
