Responding to System Alarms
T
roubleshooting
Force EZ-C Series Service Manual
7-11
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.
Number
Description
Recommended Action
0
1
Master microcontroller failed to hold
feedback microcontroller in reset.
Master microcontroller failed to power up
feedback microcontroller
Turn the power switch off (O) then on (I) again.
If error reappears, replace the control board.
Refer to
Control Board Replacement
in Section 8.
2
3
Feedback microcontroller failed to power
up and initialize RAM in time allotted.
Feedback microcontroller failed to
checksum battery-backed RAM data in
dual-port RAM in time allotted.
Turn the power switch off (O) then on (I) again.
If error reappears, replace the control board.
Refer to
Control Board Replacement
in Section 8.
4
Internal diagnostics. Master microcontroller
CPU test failed.
1.
Replace the Control board. Refer to
Control Board
in Section 8.
2.
Calibrate the generator. Refer to Section 6 for
instruction.
If the alarm number appears, record the number
and call the Valleylab Service Center.
5
6
7
Master microcontroller unable to access
FEEDBACK_SEM semaphore.
Master microcontroller unable to access
ECON_SEM semaphore.
Master microcontroller unable to access
KEY_ACTIVE_SEM semaphore.
Turn the power switch off (O) then on (I) again.
If error reappears, replace the control board.
Refer to
Control Board Replacement
in Section 8.
10
Software malfunction. Invalid alarm
number.
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.
Turn the power switch off (O) then on (I) again.
If error reappears, replace the control board.
Refer to
Control Board Replacement
in Section 8.
12
Diagnostics/microcontroller malfunction.
TON_ERR test failed.
Refer to
Correcting T_ON ASIC Malfunctions
(steps
4–11) in this section. If error reappears, replace the
control board. Refer to
Control Board Replacement
in
Section 8.
