Mitsubishi Electric GT16 User Manual page 390

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GOT status check sheet
Check the GOT starting from (1) GOT status.
Proceed as instructed by "Action".
(1) Status of the GOT
Phenomenon
(a) Frequency when the GOT does not operate, an error occurs on the screen, etc.
Occurs always.
Occurs sometimes.
(b) Checking of the displayed error code (system alarm)
Can be checked.
Cannot be checked.
(c) POWER LED
Lit in green
Lit in orange
Blinks in green/orange
Not lit
(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.
19 - 2
19. TROUBLESHOOTING
19.1 GOT Restoration Sheet
Cause/status
Occurrence frequency:
(
Example: Once a month
Error code (system alarm):
(
Example: 460 Communication unit error
The power is supplied normally.
Screen saving is being performed.
The read device of the system information may
have been turned ON when the device was set,
and the screen was switched to the forced screen
saving status.
The backlight has run out.
The power is not supplied.
When the power is supplied, the GOT hardware
may be faulty.
The LCD or BootOS may be faulty.
The GOT hardware may be faulty.
The GOT hardware may be faulty.
Example: A vertical line is displayed.
The screen display is not updated and any
operation is not allowed.
) Proceed to (1)-(b).
Take the action for the error code (system
alarm) or error message checked.
If the status does not change after the action
)
is taken, proceed to (1)-(c).
Proceed to (1)-(c).
Proceed to (1)-(d).
Check the setting of the read device.
When no problem is found in the setting,
proceed to (1)-(d).
Replace the backlight.
If the GOT is not restored, proceed to (1)-
(d).
Check if the power is supplied. If the GOT is
not restored, proceed to (5) Troubled
product investigation.
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.
Proceed to (5) Troubled product
investigation.
Proceed to (1)-(e).
Action