Mitsubishi GT16 User Manual page 167

Phenomenon
(d) Screen display
The screen is completely
black.
The screen is completely
white.
A line is displayed on the
screen.
Other faulty displays
The screen freezes.
(e) Buzzer sound
Does not sound.
Continues to beep randomly.
Continues to beep in a
particular pattern.
Beeps continuously.
Cause/status
The LCD or BootOS may be failty.
The GOT hardware may be faulty.
The GOT hardware may be faulty.
Example: A vertical line is displayed. Proceed to (5) Troubled product
The screen display is not updated and any
operation is not allowed.
Buzzer sound:
(
Example: The rhythm as three beeps, one beep,
and then two beeps is repeated.
The read device of the system information may
have turned ON when the device was set, turning
ON the Buzzer output signal.
Action
Perform the following in order.
1) Reinstalling BootOS
2) Reinstalling standard monitor OS
If the GOT is not restored by 1) and 2),
perform the following.
3) Reinstalling CoreOS and then standard
monitor OS
If the GOT is not restored by the above
operations, proceed to (5) Troubled
product investigation.
Proceed to (5) Troubled product
investigation.
investigation.
Proceed to (1)-(e).
) Proceed to (2) Status of the GOT when it
freezes.
Check the setting of the read device.
When the Buzzer output signal has no
error, proceed to (2) Status of the GOT
when it freezes.
10.1 GOT Restoration Sheet
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