Service Manual – Troubleshooting
SERVICE MANUAL • X-MIND prime 3D • (19) • 11/2019 • NXMPEN080A
Note
In case of short circuit on the X49-X20 cable, the MCU board fuse F1 may
be blown (the 24V power supply LED H2 OFF) and / or the motor driver (on
the MCU board) may be damaged; if it is the case, replace the fuse F1 or
the whole MCU board.
2.
If the chin rest moves or continues to move against the chin rest end run, verify
the functionality of the optical sensor B4 signal as explained in the Note below.
If the signal is NOT OK, check the optical sensor cable X1-B4-X24 and if it is not
ok, fix or replace it. If cable is OK and sensor signal is still not OK, replace the
optical sensor B4.
Note
The optical sensor B4 functionality can be checked placing an opaque thin
material in its optical path and using a multimeter, verify that the voltage
between the MCU board X24 pin-2 and pin-4 is:
-
about 5V when the optical path is covered
-
about 0V when the optical path is not covered.
3.
If the error was not solved by the above tests, replace the MCU board (see
paragraph 11.3.2).
Technical Service additional information required
: try to reproduce the error
recording:
-
An audio-video with a global view of the chin rest movements
-
An audio-video with a bottom view of the chin rest motor linear system group
movement (removing the chin rest bottom cover).
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