Epson DREAMIO EH-TW2900, Service Manual

Page: 30 / 107

EH-TW3500/4500/5500 Troubleshooting CONFIDENTIAL
SEIKO EPSON 30 Revision A
SN Thermistor error
Light Valve TH Light Valve TH is broken. Replace the Optical Engine and MAB set.
"3.3.9 Removing the Optical
Engine (assembly) (p75)"
TH Board (PS Ballast) TH Board is broken. Replace the PS Ballast.
"3.3.15 PS Ballast (p92)"
TH Board (1)
TH Board (2)
TH Board is broken. Replace the broken TH Board.
• "3.3.12 TH Board (1) (p89)"
• "3.3.14 TH Board (2) (p91)"
Cable C170
Cable TH
Cable is not connected properly. Connect the cable correctly.
MA Board
Elements for temperature control on
MA Board are broken.
If the error continues after carrying out the remedies
above, replace the Optical Engine and MAB set
because they are broken.
• "3.3.8 Removing the MA Board
(assembly) (p68)"
• "3.3.9 Removing the Optical
Engine (assembly) (p75)"
Error code/error name Faulty part/part name Cause Remedy Reference
MA Board
Optical Engine
PS Ballast
Cable C170
TH Board (PS Ballast)
TH Board (2)
TH Board (1)
Light Valve TH
Cable TH