Optoma EP774 Service Manual page 18

Image
Projector logo screen
YES
Confirmation with none-signal state
Still dark after the
NO
Menu display
YES
Input each signal
Image display
YES
Speaker work
YES
Check the
projection
Company Confidential
NO
1. Check CW Sensor Board Ass'y malfunction.
2. Check Main Board Ass'y malfunction.
1. Check Lamp deterioration (malfunction/usage time).
YES
2. Check Power Supply Unit malfunction.
(No change occurs even after lamp replacement.)
3. Check DMD Set malfunction.
1. Check Remote controller set malfunction, Low battery, and
NO
outside operating rang.
2. Check Main Board Ass'y malfunction.
3. Check Main board connector (CN451) & U451 disconnected.
4. Check IR PWB Ass'y malfunction.
NO
1. Check the pattern generator setting is wrong.
2. Check Main Board Ass'y malfunction.
3. Check DMD Set malfunction.
4. Check Setting on PC side (external output setting, resolution, etc.)
5. Check Cable malfunction (disconnection and pins broken).
NO
1. Check Wire from IO board ( CN8 ) to Main board (CN705)
disconnected.
2. Check Speaker Connector to Main board (CN704) disconnected.
3. Check Speaker Ass'y malfunction.
4. Check Audio PWB Ass'y malfunction.
5. Check Main Board and keypad Board Ass'y malfunction.
Optoma_______________________
18
Rev. 01
Delta____________
2007/06/13