“Confidential, Do Not Duplicate without written authorization from NEC.”
4-15
TROUBLESHOOTING
LPSU Over Temp.
No
Yes
Is the ambient temperature 35°C or above?
Adjust air conditioning so that the
ambient temperature is below 35°C
or equipment operating temperature
(upper limit).
No
Yes
Is there no clogging at the exhaust port?
Remove the clogging obstacle.
No
Yes
Is there no clogging in the air filter?
Replace the air filter.
Yes
No
Is ventilation normal when the power is ON?
Replace the lamp power supply.
Replace the related fan if there is any
error such as fan stop.