Appendix C: Troubleshooting - YASKAWA YRC1000 Startup Manual

VERSION 5.3.0

APPENDIX C: TROUBLESHOOTING

Issue #1 "Unauthorized User" error. This issue occurs when you input an incorrect safety mode
password.
If you are using a collaborative robot, enter in your 16-digit custom safety mode password from the
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"Collaborative Password Agreement" If you do not have that on hand, call Yaskawa Support with your
Warranty ID number and they will provide it to you.
If you are using a non-collaborative robot, try re-entering the default safety mode password (5555 5555
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5555 5555). If this doesn't work, contact Yaskawa Support.
Issue #2: "Alarm 4751 unmatch of general safety input signal functionality is detected by ASF02
board". This alarm occurs when there is a mismatch of safety I/O signals.
Check the Functional Safety Breakout wiring against the wiring diagram in the READY pendant wiring
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section.
Check the safety fence jumper wires on the safety terminal block.
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Issue #3 "I/O Media Error". This error occurs if the Yaskawa pendant cannot read the USB flash drive
you inserted.
Boot the Yaskawa controller in Maintenance Mode. Go to the Main Menu on the Yaskawa pendant, select
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EX.MEMORY, and select DEVICE.
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