Leica M500 N Service Manual page 47

Service manual M500 N, M520, M525
Doc Code 10 665 751
Error message
MF: Zoom unexpected stop
MF: Focus unexpected stop
MF: CAN bus restarted
MF: Error while installing CAN
objects
MF: Zoom end position not reached
MF: Focus end position not reached Could not reach end position of focus,
MF: Zoom position error
MF: Focus position error
Iris init pos not reached (No 107)
Unexpected Iris stop (No 125)
Relevant error messages caused by the control unit (basic SW errors are not listed):
Error message
CAN warning 1: 96 communication
errors
4-9
Description
End position of zoom motor was reached
untimely.
End position of focus motor was reached
untimely.
More than 256 transmission errors did
occur on CAN bus; CAN controller chip
is initialized again and bus
communication is launched again.
Required amount of CAN objects could
not be installed.
Could not reach end position of zoom,
therefore position counter is not properly
set.
therefore position counter is not properly
set.
Could not reach required zoom position.
Could not reach required focus position.
Iris motor could not reach end position.
End position of Iris motor was reached
untimely.
Description
More than 96 transmission errors did
occur on CAN bus; bus communication
is launched again.
Fault finding
08/2007 Gahe
Remedy
Reason can be increased friction of
mechanic or motor problem.
Reason can be increased friction of
mechanic or motor problem.
•
Check CAN cables
•
Electronic problem on CAN
controller like inaccurate bit
rate or faulty bus
transceiver chip.
Electronic problem on motor
controller: defect of CAN controller
chip
Reason can be increased friction of
mechanic or motor problem.
Reason can be increased friction of
mechanic or motor problem.
Reason can be increased friction of
mechanic (or manipulation on
emergency drive knob) or motor
problem.
Reason can be increased friction of
mechanic (or manipulation on
emergency drive knob) or motor
problem.
Mechanical problem in Iris assembly.
Reason can be increased friction of
mechanic or motor problem.
Remedy
•
Check CAN cables
•
Electronic problem on CAN
controller like inaccurate bit
rate or faulty bus
transceiver chip.