A7™ Service Manual 046-006272-00 5 - 11
Repair and Troubleshooting Technical Alarms Check
Flowmeter Comm Stop Med
The CPU control board fails to
communicate with the flow
sensor board for 10 seconds.
1. Restart the machine.
2. Check the cable connection between the flow
sensor board and the CPU board.
3. Replace the flow sensor board when necessary.
4. Replace the CPU board when necessary.
Keyboard Comm Stop Med
The CPU board fails to
communicate with the keyboard
for 10 seconds.
1. Restart the machine.
2. Check the cable connection between the
keyboard and the CPU board.
3. Replace the keyboard when necessary.
4. Replace the CPU board when necessary.
Backup Flow Control Error Med
The BFCS ejection position sensor
malfunctions.
The BFCS retraction position
sensor malfunctions.
BFCS LED voltage input errors
occur.
See “BFCS Failure Alarm Numbering Conventions”
on page 5-14.
Message Priority Cause Solution