Valleylab Force FX-8C, Service Manual

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Correcting Malfunctions
Troubleshooting
Force FX-8C Service Manual 6-5
Generator is on, but did
not complete the self-test An alarm condition exists Check the display for an alarm number. Note the number
and refer to Responding to System Alarms in this
section.
Software malfunction Turn off, then turn on the generator.
Loose or disconnected internal cables Check and correct all internal connections.
Faulty low voltage power supply Check the low voltage power supply.
Damaged Control board connectors and/
or malfunctioning Control board Remove the Control board and inspect the connectors to
the Power Supply/RF board and to the Display board for
damage, poor seating, etc. If the problem persists,
replace the Control board. For instructions, refer to
Control Board Replacement in Section 7.
Shorts or disconnects on Power Supply/
RF board Check the Power Supply/RF board for shorts or
disconnects.
Faulty power switch Replace the power switch. Refer to Panel Power Switch
Replacement in Section 7.
Malfunctioning front panel components Replace the front panel assembly. Refer to Front Panel
Replacement in Section 7.
Alarm number 212
appears in the Cut
display during the self-
test The battery was removed and/or replaced,
but the generator was not calibrated Turn off, then turn on the generator to clear the number.
Calibrate the generator. For instructions, refer to
Calibrating the Generator in Section 5.
Faulty battery on Control board causing
loss of battery-backed memory Replace the battery and check the battery-backed RAM
device. Refer to Correcting Battery-Backed RAM
Malfunctions later in this section.
Loss of battery-backed RAM due to faulty
component on the Control board (other
than the battery) Replace the Control board. Refer to Control Board
Replacement in Section 7.
Activation and/or alarm
tones do not sound;
speaker is
malfunctioning Poor connection or damaged footswitch
board ribbon cable Check/correct connection. If indicated, replace the
Footswitch board. Refer to Footswitch Board
Replacement in Section 7.
Faulty connections or speaker on
Footswitch board Replace the Footswitch board. Refer to Footswitch Board
Replacement in Section 7.
Audio signal malfunction on Control board Replace the Control board. Refer to Control Board
Replacement in Section 7.
Situation Possible Cause Recommended Action