Yamaha RCX240, User Manual

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A-84
TROUBLESHOOTING
A
TROUBLESHOOTING
A-85
2. Troubleshooting
2.3 Troubleshooting checkpoints
1. Installation and power supply
Symptom Possible cause Check items Corrective action
1 Controller won't
turn on even with
power supplied.
• Power not supplied.
• Problem in controller
internal power.
• Check power input
terminal connection
(L/N/L1/N1).
• Check power input
terminal voltage
(L/N/L1/N1).
• Check if "PWR"
LED on front panel
is lit.
• Connect power
input terminal
correctly.
• Supply rated power
supply voltage.
• Replace the
controller.
2 Controller turns
on but no RPB
display.
• RPB not connected.
• Wrong RPB
connection.
• RPB malfunctioning.
• Problem in controller
internal power
supply.
• Check RPB
connector.
• Check how RPB
connector is
inserted.
• Replace RPB and
check operation.
• Plug in RPB
connector
correctly.
• Replace the RPB.
• Replace the
controller.
3 Controller turns
on but "ERR"
LED on front
panel lights up.
• Now in emergency
stop.
• Connect the RPB
and check the error
history.
• Check the DI00
(Emergency stop
input) status on the
RPB display screen.
• Release RPB
emergency stop
switch.
• Insert RPB
connector.
• Connect the
emergency stop
terminal of SAFETY
connector.
• Error of error group
No. 17 occurred.
• Connect the RPB
and check the error
history.
• Check the axis
from the error
information.
• Check the cause
from the error
information.
• Eliminate the cause
of the error.
• Error of error group
No. 21, 22 occurred.
• Connect the RPB
and check the error
history.
• Check the cause
from the error
information.
• Eliminate the cause
of the error.