Image Performance Troubleshooting - Optoma PK-301 Service Manual

3-4 Image Performance Troubleshooting

Image performance
troubleshooting
Does the optoma
logo show on the
screen?
YES
Does the image
show on the NO
screen?
YES
Is focus OK?
YES
Is color OK?
YES
Have line bar? YES
NO
Is uniformity
OK?
YES
No fault found.
END
Change main board.
NO
Have bright dots
NO on the screen or
white screen?
Ensure signal cable
and signal source
work well.
Make sure the
NO projection distance
is in spec.
Ensure signal cable
NO and signal source
work well.
Make sure the main board
and engine module are
assembled properly
Make sure the
NO projection lens and
screen clean.
YES
Change engine
YES
module.
Change engine
module.
YES
Does the image
show on the NO
screen?
YES
Is focus OK? NO
YES
YES
Is color OK? NO
NO
NO
Have line bar? YES
YES
Is uniformity
NO
OK?
PK-301/PK320/PK301 PLUS
Does the image
NO show on the
screen?
Change main board.
Use the soft cloth to
clean the lens.
NO
Is the projection
YES
lens clean?
Change main board.
Change engine
module.
Change main board.
Change engine
module.
Confidential
Change engine
module.
Is color OK?
NO
Change engine
module.
Have line bar?
YES
3-4