Epson EH-TW2900 Service Manual page 30

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