Toshiba TDP-P4 Service Manual page 87

Troubleshooting Keypad Problems
Remove the rear bezel
and plug the good
keypad in without
removing the top case.
Substitute the
good keypad.
(page 21)
Does the
projector respond
to key presses?
Yes
Replace the
keypad.
(page 21)
TDP-P4 Service Manual
Keypad does not respond to key presses.
Is a known good
Yes
keypad available for
substitution?
Replace the
No controller ECA.
(page 34)
No
Replace the
keypad. No
(page 21)
Substitute a known
good controller ECA.
(page 34)
Does the
projector respond
to key presses?
Yes
Replace the
controller ECA.
(page 34)
87