Troubleshooting 8-5
8.4.4 FmXP Startup
Table 8-4 FmXP Startup
Symptom Possible Cause Recovery
Communications failure
Verify COM port settings and serial
communications cables are attached. Restart
computer and retry.
USB communications failure
The USB hub may have failed or lost power.
The laptop PC communicates to system
devices via the USB hub. Check the USB
connection and ensure the USB hub is
connected to its power source on outlet AC4
from the power manager.
Main PWA NVRAM failure
1. Replace battery and reinitialize main PWA
memory.
2. Run escape sequences and reload
machine specific personalities. Refer to the
system’s ACL Recovery Disk.
“The Dispenser ACLPlus
Device Failed to
Respond” message
appears
Main PWA failure
Check main PWA’s “Heartbeat” to see if board
is functioning. Cycle power and retry.
No system power
See System Power Recovery Procedures
(
Table 8-1).
Interlock open
Restore Interlock. See 2.10.1 Interlock
Recovery.
No dispensing head
motion
Home cable disconnected Connect cable.
Obstruction preventing machine
motion, and the servo system goes
open loop
Remove obstruction.
Dispensing head fails to
find home
Home switch failure
Inspect and adjust home flag and retry. Replace
home switch if broken.
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