Troubleshooting
MagnaTran 7.1 User’s Manual
Repeatability Related Issues
MN-003-1600-00
Brooks Automation
10-22
Revision 2.2
Repeatability Related Issues
Symptoms:
Wafer is not placed to same position repeatedly.
Troubleshooting Process:
Inspect for physical obstruction interfering with robot arms and wafer placement.
Verify process module and its wafer pins are level.
Verify robot wrist bands are adjusted properly.
Inspect robot wrist bearings and elbow bearings for excessive wear.
Verify that robot encoder values are repeatable to the desired station. Refer to
Repeatability Test on page 10-33
Reference
Radial Motion Related Issues on page 10-8
and