Leica M500 N Service Manual page 46

Fault finding
08/2007 Gahe
Error list in diagnostic menu
All error-messages are stored in an error-list. How to display the error list - refer to chapter
control unit".
Error interpretation
Restrictions and remarks:
Below description refers to SW 1.87 in the control unit and 2.4 or 4.4 in optics carrier.
Error messages caused by the Iris diaphragm in M525 optics carrier are NOT displayed in M500 N / M520 control unit.
Level-1 messages are underlined, all others are Level-2 messages.
MF means multifoc controller / motor controller .
Error messages caused by the optics carrier:
Error message
Microscope error/warning out of
range
Microscope needs initialization
Microscope initialization failed
Activating user parameter failed
No status response from
microscope
Microscope detected (config. error) Optics carrier was found on CAN bus,
Microscope not detected (config.
error)
IGS Calibration Code setting error
MF: CAN 96 communication errors
MF: Watchdog expired, rebooted
4-8
Description
Control unit received an unknown error
code from optics carrier.
Power-up-reset happened to optics
carrier; therefore motor positions are not
defined.
Initializing command, sent to optics
carrier, is not executed within 45
seconds.
Motor positioning commands, sent to
optics carrier, are not executed within 45
seconds.
No status response from optics carrier
within 5 seconds.
although it is set to NOT PRESENT.
Optics carrier was not found on CAN
bus, although it is set to PRESENT.
Problem writing IGS calibration code to
optics carrier.
More than 96 transmission errors did
occur on CAN bus; bus communication
is launched again.
Watchdog expired – program crashed;
resulting in power-up boot.
Service manual M500 N, M520, M525
Doc Code 10 665 751
"Diagnostic function
Remedy
Check compatibility of software in
control unit with software in optics
carrier.
Release "initialize microscope" in
menu II.
If no problem with CAN
communication it is a problem of
motor controller in optics carrier.
If no problem with CAN
communication it is a problem of
motor controller in optics carrier.
If no problem with CAN
communication it is a problem of
motor controller in optics carrier.
Set optics carrier in device list
PRESENT.
Set optics carrier in device list
NOT PRESENT.
•
SW in optics carrier must be
2.4 or higher
•
No reply from IGS
workstation on CAN bus
•
Code does not match with
calibration code of IGS
workstation
•
Check CAN cables
•
Electronic problem on CAN
controller like inaccurate bit
rate or faulty bus
transceiver chip.
As long as position counters did not
loose their values, normal operation
possible. Else release "initialize
microscope" in menu II.