Time out errors are generated when the Main PCB does not receive a signal from the stepper motor register that the motor has moved to a specified position within the time allocated by the firmware. When it takes to long for the Main PCB to get a signal from the optical sensor that the stepper motor has moved to a specified position, then a time out error is generated.
Index errors are generated when the Main PCB does not receive a signal from the index sensors that the motor is at the index position to allow some other function of the machine to proceed.
If you are getting this error frequently, troubleshoot the problem using the steps shown in the table below.
|
Step |
Action |
Symptom |
Next Action |
|
1 |
Check for a bind or obstruction of the assembly the motor controls. |
Obstruction found |
Remove the obstruction |
|
No obstruction |
Go to Step 2 |
||
|
2 |
Verify harness connections |
Loose connection |
Secure the connectors. If necessary use cable ties. |
|
No loose connections |
Go to Step 3 |
||
|
3 |
Inspect the harnesses for bare, broken, or pinched wires, chaffing or other damage. |
Any found |
Replace the grabber/thread feed/cc home harness. |
|
No damage to wires |
Goto Step 4 |
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|
4 |
Trouble shoot the stepper motor using the procedures in "Troubleshooting Stepper Motors". |
Status box does not alternate between "Open and Blocked" |
Replace the optical sensor PCB. The sensor is not detecting home. |
|
Status box alternates back and forth |
Go to Step 5 |
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|
5 |
Test the optical sensor using the steps prescribed in " Testing Optical Sensors" |
Optical Sensor is dirty |
Attempt to clean it or replace it |
|
Optical Sensor good |
Contact Melco Technical Support. The Main Control PCB might be defective. |
