Epson EMP-S4 Service Manual page 57

(Continued from previous page)
B
Connect the host
computer to the Computer
connectors and display
an image.
Does an image appear
on the screen?
No
Press the [Source] button
to change the display to
Computer.
Does an image appear
on the screen?
No
Replace the computer
cable.
Does an image appear
on the screen?
No
Replace the Optical
Engine and MA Board.
SEIKO EPSON
EMP-S4
C
Is the image quality good?
1. Press the [Menu]
button.
2. Select the "Image"
menu.
3. Adjust the brightness
Yes
and contrast.
Is the image quality good?
Replace the Optical
Engine and MA Board.
Yes
Yes
Yes
Connect external devices
to all the interfaces.
No
Connect a source to the
interface to be checked.
Yes
No
3-9
Yes
No
C
Audio Output
Revision:B