Toshiba T2N User Manual Page 85

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  • TROUBLESHOOTING
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5.Maintenance and Checks
70 PROSEC T2N
Recommended daily checks for optimum system performance
Item Content of Check Countermeasure
when Abnormal
POWER(Red)
:Lit when 5V power
supply normal
RUN(Green)
:Lit when operating
normally
FLT(Red)
:Out when CPU and
I/O normal
Check the LEDs on
the front of the power
supply modules and
CPU module
BAT(Green)
:Lit when battery
voltage normal
When the state of an
LED is not normal, follow
the procedure
in 6.Trouble-shooting.
Check the LED
displays of the input
modules
(Digital input)
The corresponding LED
should be lit when an
external input signal is
ON.
Check whether the
input voltage is within
the specified value.
Check whether there is
any slack in the input
terminal block.
Check whether the
module is securely
mounted.
Check the LED
displays of the output
modules
(Digital output)
When the output is ON,
the corresponding LED
should be lit and the
corresponding external
load should operate.
Check whether the
external load voltage is
within the specified
value
Check the built-in fuse.
Check whether there is
any slack in the output
terminal block.
Check whether the
module is securely
mounted.
Check the switch
position on the CPU
module
Operation is executed
when the operation mode
switch(HALT/RUN) is to
Run.
Put the switch to
the specified position.
See Ethernet/TOSLINE-S20LP of the T2N users manual regarding status
display LEDs for built-in networking.
5.1
Daily Checks
5.1
Daily Checks
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