Table of Contents
Advertisement
7-4
EP757
SERVICE MANUAL
7-2.1 A. Power Troubleshooting
Start
Is LED
indicator OK?
Yes
Is Fan working?
Yes
Is Lamp lit?
Yes
End
Introduction
Fundamental Principle
Troubleshooting
Function Test and Alignment Procedure
No
Check power cord
& input power
voltage
No
Supply AC
Power
No
No
Change
DC-DC
Can hear the
No
sound of lamp
ignition
Yes
Reassembly
No
Lamp Module
Mechanical Construction
Procedure of Disassembly
Firmware Upgrading Procedure
Yes
Lamp Replacement
Cover assembly
OK?
Yes
No
Change
Ballast
Change
Change
No
Thermal BD
Fan Module
No
No
Change
Change
Ballast
Main BD
Replace
Lamp Module
Function of Boards
Specifications
DDC Key-In Procedure
Reassembly lamp
No
Replacement Cover
No
Change
Change
Main BD
DC-DC
Change
No
No
Change
Thermal
DC-DC
BD
Appendix
Advertisement
Table of Contents
