Service manual

C20
Condential
3-2
No Symptom
Procedure
7 Color Abnormal
• Do “System reset” in Service mode
• Do “Duty selection” in Service mode
• Check the source cable is connected properly
• Check Main Board
• Check Engine Module
8
Poor Uniformity/
Shadow
• Ensure the projection screen without dirt
• Ensure the projection lens is clean
• Ensure the Brightness is within spec
• Check Engine Module
9
Dead Pixel/Dust
(Out of spec.)
• Ensure the projection screen without dirt
• Ensure the projection lens is clean
• Check Engine Module
10 Garbage Image
• Ensure that the signal cables and source work well.
• Check Main Board
• Check Engine ModuleEngine Module
11 Function Abnormal
• Do “System reset” in Service mode
• Check Main Board
12 Audio Abnormal
• Ensure that the signal cables and source work well
• Check Speaker
• Check Main Board
13 FW Upgrade Failed
• Ensure that the signal cables and PC work well
• Check the software program version
• Check the rmware le
• Check the upgrade process
• Check Main Board
14
Micro SD Card/ Micro
USB Function Failed
• Ensure that the signal cables and source work well
• Check the source is compatible to the projector
• Check SD Card
• Check Main Board