Omron NX701-17 Series Troubleshooting Manual page 58

2 Error Troubleshooting Methods
 Hardware Initialization Error
A conductive object has gotten inside.
Noise
CPU Unit failure
 Incorrect Power Supply Unit Connected
A CJ-series Power Supply Unit is con-
nected to an NJ-series CPU Unit.
 CPU Unit Error
A conductive object has gotten inside.
Noise
CPU Unit failure
 CPU Unit Watchdog Timer Error
A conductive object has gotten inside.
Noise
CPU Unit failure
2-6
Cause
If there is conductive material nearby, blow out the CPU Unit with air.
If the error did not result from the above causes, cycle the power to
the Controller and see if that resets the error. If the error occurs fre-
quently, check the FG and power supply lines to see if noise is enter-
ing on them. Implement noise countermeasures as required.
If the error persists even after you make the above corrections,
replace the CPU Unit.
Cause
Connect an NJ-series Power Supply Unit to the NJ-series CPU Unit.
Cause
If there is conductive material nearby, blow out the CPU Unit with air.
If the error did not result from the above causes, cycle the power to
the Controller and see if that resets the error. If the error occurs fre-
quently, check the FG and power supply lines to see if noise is enter-
ing on them. Implement noise countermeasures as required.
If the error persists even after you make the above corrections,
replace the CPU Unit.
Cause
If there is conductive material nearby, blow out the CPU Unit with air.
If the error did not result from the above causes, cycle the power to
the Controller and see if that resets the error. If the error occurs fre-
quently, check the FG and power supply lines to see if noise is enter-
ing on them. Implement noise countermeasures as required.
If the error persists even after you make the above corrections,
replace the CPU Unit.
Correction
Correction
Correction
Correction
NJ/NX-series Troubleshooting Manual (W503)