Troubleshooting Checkpoints - Yamaha RCX222 User Manual

2. Troubleshooting
2.3

Troubleshooting checkpoints

1. Installation and power supply
Symptom
1 Controller won't
turn on even with
power supplied.
Chapter
9
2 Controller turns
on but no RPB
display.
3 Controller turns
on but "ERR"
LED on front
panel lights up.
9-66
Possible cause
• Power not supplied.
• Problem in controller
internal power.
• RPB not connected.
• Wrong RPB
connection.
• RPB malfunctioning.
• Problem in controller
internal power
supply.
• Now in emergency
stop.
• Error of error group
No. 17 occurred.
• Error of error group
No. 21, 22 occurred.
Check items
• Check power input
terminal connection
(L/N/L1/N1/FG).
• Check power input
terminal voltage
(L/N/L1/N1/FG).
• Check if "RDY" LED
on front panel is lit.
• Check RPB
connector.
• Check how RPB
connector is
inserted.
• Replace RPB and
check operation.
• Connect the RPB
and check the error
history.
• Check DI00
(Emergency stop
ready signal) on
RPB screen.
• Connect the RPB
and check the error
history.
• Connect the RPB
and check the error
history.
Corrective action
• Connect power
input terminal
correctly.
• Supply rated power
supply voltage.
• Replace the
controller.
• Plug in RPB
connector
correctly.
• Replace the RPB.
• Replace the
controller.
• Release RPB
emergency stop
switch.
• Insert RPB
connector.
• Connect the
emergency stop
terminal of SAFETY
connector.
• Check the axis
from the error
information.
• Check the cause
from the error
information.
• Eliminate the cause
of the error.
• Check the cause
from the error
information.
• Eliminate the cause
of the error.