Epson EH-TW2900 Service Manual page 38

EH-TW3500/4500/5500
Error Status Faulty part/part name
SW1 Board
SW2 Board
Operation using SW Board
cannot be made.
MA Board
SEIKO EPSON
Troubleshooting
Cause
SW Board is broken. Replace SW Board.
If the error continues after carrying out the remedies above,
Elements for operation control on MA
replace the Optical Engine and MAB set because they are
Board are broken.
broken.
38
Remedy
SW1 Board
MA Board
SW2 Board
Optical Engine
CONFIDENTIAL
Reference
• "3.3.5.1 SW1 Board (p62)"
• "3.3.4.1 SW2 Board (p58)"
• "3.3.8 Removing the MA Board
(assembly) (p68)"
• "3.3.9 Removing the Optical
Engine (assembly) (p75)"
Revision A