Installation Manual

Troubleshooting 8-79
12. Place an opaque plastic card into the Y-axis Home Sensor slot.
13. Measure VDC between Pin 1 and Pin 4.
14. Is the reading less than 2 VDC?
Home/Limit Switch PWA (P/N 60-0785-00) has
failed. See
Parts Replacement section.
Go to Step 15
15. Switch the Main Circuit Breaker to the OFF (0) position.
16. Manually move the Dispensing Head to the front left corner of the dispensing chamber until it
contacts the Y-axis Home Sensor.
17. Does the black Home Flag enter the Y-axis Home Sensor without contacting the Sensor case?
Go to Step 18
Go to “PMAC Fatal Following Error Verification” in 8.2.1, PMAC Initialization
Fault Isolation Procedure
18. Loosen the two 3-mm bolts, reposition the Y-axis Home Sensor, and torque the bolts to 20 in-lbs
(0.230 kg-m).
19. Manually move the Dispensing Head to the far left until it contacts the Y-axis Home Sensor.
20. Does the black Home Flag enter the Y-axis Home Sensor slot without contacting the Sensor case?
Go to Step 18
Go to “PMAC Fatal Following Error Verification” in 8.2.1, PMAC Initialization
Fault Isolation Procedure
No
Yes
No
Yes
No
Yes