Toshiba TDP-ST20E Service Manual page 50

Troubleshooting Remote Controller Problems
Infrared Remote Problem
Install known good batteries in the remote controller.
Does the remote work?
Use a known good remote with the projector
Does the remote work?
Replace the Main board
Troubleshooting Keypad Problems
Keypad does not
respond to key presses.
Is a known good Key B.
available for substitution?
Yes
Substitute the good key board.
Does the projector
respond the key presses?
Yes
Replace the key board.
No
No
.
No
No
Replace the Main board.
Yes
Substitute a known
good Main board.
Does the projector
Respond the key presses?
No
Replace the key board.
6-7
Chapter 6
Problem resolved
Problem resolved
Yes
Replace the Main board.