5-9
5-3 Troubleshooting
Problem Probable cause Possible solution
Nothing appears on the display.
Power supply error. Supply the correct power supply
voltage.
.
RESET signal has been input. Check the connected wiring.
Circuit error.
Replace the Cam Positioner.
Watchdog timer error.
Nothing appear on the display.
The ERROR terminal is L.
Display circuit error. Replace the Cam Positioner.
There are no cam outputs.
A cam program has not been
input.
Check the cam program.
Cam output power supply error. Check the power supply voltage.
BANK selection fault.
START signal input fault.
Check the connected wiring.
Control signal power supply fault.
Circuit error.
Replace the Cam Positioner.
A specific cam output does not
Wiring error. Check the connected wiring.
turn ON.
Externally-connected part error. Replace the externally-connected
part.
Output transistor error. Replace the Cam Positioner.
Unprogrammed outputs are being
made.
A new cam program has been
input without clearing the existing
cam program.
Check the cam program.
When copying a cam program
from a 3F88L-160 Cam Positioner
to a 3F88L-162 Cam Positioner, a
cam program containing CAM17
to 32 has been input to the
3F88L-160 Cam Positioner (when
a cam program has been copied
to the 3F88L-160 from a
3F88L-162 beforehand.)
Check the cam program and
delete any unnecessary cam
programs.
Program memory error. Replace the Cam Positioner.
Operation Chapter 5
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