122
Display
Cause
Where to check and how to take
actions
Reference
The cooling fan fails.
Check and replace the cooling
fan.
The power supply for the cooling
fan is decreased.
Replace the power supply board
<PSFM66>.
The wire between the gate board
<GAC66> and the power supply
board <PSFM66> is disconnected
or incorrect.
Correct it.
The relay for turning on/off the
cooling fan is not enabled.
Replace the power supply board
<PSFM66>.
* A character in the third digit from the right distinguishes a master unit (n) from slave units
(1, 2, and 3).
Display
Cause
Where to check and how to take
actions
Reference
The gate board <GAC66>
malfunctions.
Replace the gate board <GAC66>
of the displayed slave unit.
* A character in the third digit from the right distinguishes a master unit (n) from slave units
(1, 2, and 3).
Display
Cause
Where to check and how to take
actions
Reference
Input power supply voltage
abnormally rises.
Check input power supply
voltage.
The output electrical wire was
grounded or short circuited.
Check the wiring of the output
electrical wire.
* A character in the third digit from the right distinguishes a master unit (n) from slave units
(1, 2, and 3).
■
Console error displays
Display
Cause
Where to check and how to take
actions
Reference
Insertion of the connectors of
the console
Check the insertion status of
defective connector.
The control board <VFC66R-Z> is
in the program rewrite mode.
After rewriting of the program
is completed, it is
automatically restored.
The control board <VFC66R-Z>
malfunctions.
Replace the control board
<VFC66R-Z>.
8.2. How to Replace
Control Board