
Jan. 2012
3
All pixels are off
All pixels are on
The pattern is right
and tidy
The pattern is right
and tidy
3.
Disconnect the USB cable and make sure the display shows “
Disconnected OK
”.
4.
Press
[START/STOP]
button to go to next test.
8. USB MEMORY check
The display shows:
1.
Connect the USB Memory (like ROLAND M-UF2G) to
USB MEMORY
socket.
2.
Verify that the display shows :
USB MEMORY “Connected”
and
READ/WRITE: OK.
3.
Remove the USB Memory and make sure the display shows:
USB MEMORY “Disconnected OK”.
4.
Press
[START/STOP]
button to go to next test.
9. LCD check
The display shows:
1.
Press the following four switches and check the related display-LCD condition:
2.
Press
[START/STOP]
button to go to next test.
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