Switch Board's Operation Check - Epson EMP-822 Service Manual

3.3.9 Switch Board's Operation Check

1. Does pressing [Power] button turn the power on/off?
2. Does pressing [Menu] button display the menu window?
3. Does pressing [Source Search] button change input sources?
4. Does pressing [Help] button display the help window?
5. By pressing [Enter] button, is the selected item effective?
6. By pressing the keystone buttons, is the adjustment effective?
7. By pressing [ESC] button, is the current status canceled?
For more information, refer to
Engine and MAB set(1) (MA Board Assy.) /IF Case" (p. 26)/4.4.5 "Removing the Optical Engine and MAB set (2)
(Optical Engine)" (p. 39).
SEIKO EPSON
EMP-822/EMP-83/EMP-X5/EMP-S5
Start
NG
1. Re-connect MA board
CN702 correctly.
NG
2. Replace Switch Board.
NG
3. Replace Optical Engine
and MAB set.
If the buttons does not work correctly,
apply the remedy from the top (1).
If it doesnot work, go on to the next
remedy.
END
4.3.4.1. "Removing the Switch Board Assy." (p. 17)/4.4.2 "Removing the Optical
Flowchart 3-11 Switch's Operation Check
3-21 Revision:A