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18. TROUBLESHOOTING
18.1 GOT Restoration Sheet
GOT status check sheet
Check the GOT starting from (1) GOT status.
Proceed as instructed by "Action".
(1) GOT status
Phenomenon Cause/status Action
(a) Frequency when the GOT does not operate, an error occurs on the screen, etc.
Occurs always.
Occurrence frequency:
( )
Example: Once a month
Proceed to (1)-(b).
Occurs sometimes.
(b) Checking of the displayed error code (system alarm)
Can be checked.
Error code (system alarm):
( )
Example: 460 Communication unit error
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).
Cannot be checked.
Proceed to (1)-(c).
(c) POWER LED
Lit in green
The power is supplied normally. Proceed to (1)-(d).
Lit in orange
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.
Check the setting of the read device.
When no problem is found in the setting,
proceed to (1)-(d).
Blinks in green/orange
The backlight has run out.
Replace the backlight.
If the GOT is not restored, proceed to (1)-
(d).
Not lit
The power is not supplied.
Check if the power is supplied. If the GOT is
not restored, proceed to (5) Troubled
product investigation.
When the power is supplied, the GOT hardware
may be faulty.
(d) Screen display
The screen is completely
black.
The liquid crystal display or BootOS may be faulty.
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.
The screen is completely
white.
The GOT hardware may be faulty.
Proceed to (5) Troubled product
investigation.
A line is displayed on the
screen.
The GOT hardware may be faulty.
Example: A vertical line is displayed.
Proceed to (5) Troubled product
investigation.
Other faulty displays
The screen freezes.
The screen display is not updated and any
operation is not allowed.
Proceed to (1)-(e).