Hitachi CP-A100 User Manual – Operating Manual page 73

Phenomena that may be easy to be mistaken for machine defects (continued)
Phenomenon
Color settings are not correctly adjusted.
The lamp is approaching the end of its product
lifetime.
Either the focus and/or horizontal phase settings are
not properly adjusted.
The lens or mirror is dirty or misty.
NOTE
Troubleshooting
Reference
page
23
33
33
66
73