TROUBLESHOOTING
5-19
VersaPulse Select Service Manual
0621-499-01 12/95
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F43 - DPRAM HANDSHAKE FAILURE - The dual port RAM has a problem. If this fault persists, replace the
CPU PCB.
F44 - MAIN PROCESSOR & SAFETY PROCESSOR FIRING PARAMETER MISMATCH - Replace the CPU
PCB if this fault persists.
F45 - DPRAM FAILED TEST - This check is done during self test only. The dual port RAM has a problem. If this
fault persists, replace the CPU PCB.
F46 - ATTACH FIBER - Attach the fiber to clear this fault.
F47 - ATTACH FOOTSWITCH - Attach the footswitch to clear this fault.
F48 - CHECK FOOTSWITCH - This check is done during self test only. The footswitch is depressed during self
testing. (This may also be reported if the footswitch is pressed during turn on or system initialization).
F49 - SYSTEM INACTIVE - The system goes to STANDBY if left in READY for five minutes without use. (This
is not a fault).
F50 - REMOTE INTERLOCK - The remote interlock loop is not completed.
F51 - NO CONTROL PANEL - The touch screen display is not responding. Check cable connections, the display
power supply, the touch screen display, and the CPU PCB.
F52 - OVERHEATING - This fault occurs when coolant temperature reaches 35˚C and resets when temperature
falls back down to 32˚C. The temperature monitoring circuit is calibrated as outlined in Section 3. Check Smart
Fan PCB, Fan motor, pump, and water level. Calibrate the TEMP set on the CPU PCB.
F53/F54 - PERFORMING SELF TEST/SEMAPHORE - Not error codes
F55 - NOT CALIBRATED - This check is done during self test only. The system doesn't have calibration data
stored in memory. The auto calibration routine must be run.
F56 - FAILED ENERGY SAFETY TEST - This check is done during self test only. The safety processor failed to
detect a forced incorrect pulse energy level during self test. The test includes a forced >2 times requested energy
and forced less than half requested energy. The safety processor must detect and respond to both., or this fault
will occur. If this fault persists, check the power out of the system, check the energy monitor circuit calibration,
run the autocalibration. (This may be related to fault 5).
F57 - FAILED INTERVAL SAFETY TEST - This check is done during self test only. The system failed to detect
a forced incorrect pulse interval during self test. The test includes forced .8 times and 1.2 times requested pulse
intervals. The safety processor must detect and respond to both, or this fault will occur. Replace the CPU PCB
if this error persists.
F58 - NVRAM CHECKSUM - This check is done during self test only. The NVRAM has failed a checksum check
during self testing. If this fault persists, replace the CPU PCB. The Lithium battery in NVRAM could be expired
or +5V too high. Check the power supply.
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