Valleylab Force FX-8C, Service Manual

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Responding to System Alarms
6-10 Force FX-8C Service Manual
Responding to System Alarms
When a system alarm condition exists, an alarm tone sounds and a
number flashes in the Cut display. The generator is disabled until the
condition is cleared.
Most system alarms require some action on your part to correct the
condition; however, some are corrected automatically. Use the following
table to determine how to correct an alarm condition.
After correcting the alarm condition, verify that the generator completes
the self-test as described in Section 5, Setup, Tests, and Adjustments.
Number Description Recommended Action
0
1
Main microcontroller failed to hold
feedback microcontroller in reset
Main microcontroller failed to power up
feedback microcontroller
Refer to Correcting IC U3 Malfunctions in this section.
2
3
Feedback microcontroller failed to power
up and initialize RAM in time allotted
Feedback microcontrolled failed to
checksum battery-backed RAM data in
dual-port RAM in time allotted
Refer to Correcting IC U6 Malfunctions in this section.
4 Internal diagnostics
Main microcontroller CPU test failed
Replace the Control board. Refer to Control Board Replacement in
Section 7.
Calibrate the generator. Refer to Section 5 for instruction.
If the alarm number reappears, record the number and call the
Valleylab Service Center.
5
6
7
Main microcontroller unable to access
FEEDBACK_SEM semaphore
Main microcontroller unable to access
ECON_SEM semaphore
Main microcontroller unable to access
KEY_ACTIVE_SEM semaphore
Refer to Correcting IC U6 Malfunctions in this section.
10 Software malfunction. Invalid alarm
number (number shown on terminal using
serial port) Turn off, then turn on the generator. If the alarm number
reappears, record the number and call the Valleylab Service
Center.
11 Internal diagnostics. Invalid activated
power, function, mode, or key request
mode echoed by feedback microcontroller Refer to Correcting IC U6 Malfunctions (steps 1–7) and Correcting
IC U3 Malfunctions (steps 4–11) in this section.
12 Diagnostics/microcontroller malfunction.
T_ON_ERR test failed Refer to Correcting IC U6 Malfunctions (steps 1–7) and Correcting
T_ON ASIC Malfunctions (steps 4–11) in this section.