Service Manual – Troubleshooting
SERVICE MANUAL • X-MIND prime 3D • (19) • 11/2019 • NXMPEN080A
9.2.7.1
E750: Generator board initialization error
This message is signalling that the MCU board is not able to initialize the Generator
board (A2). This error can be generated by and hardware failure on the CAN-Bus or
on the Generator board main power supply connection.
With the unit switched OFF (at least for 4 minutes), perform the following tests:
1.
Check fuse F1 (T1A 250V) on the Generator board: if the fuse is blown, replace
it and redo the test.
2.
Check integrity of the CAN-Bus cable X32-X15 between MCU board and
Generator board: if NOT OK, replace it and redo the test.
If the error is still present after tests 1 and 2, switch ON the unit and proceed as
follow:
Warning
During the following tests, pay attention to the dangerous High Voltage on
the Generator board.
3.
Verify the main power LED H8 on the Generator board:
a.
if the LED H8 is OFF, check with a multimeter that between pins X31-L and
X31-N the unit power provide AC voltage is present (eg. 230V or 120V):
-
if the power supply X31-L and X31-N is OK, replace the Generator board
-
if the power supply X31-L and X31-N is NOT OK, check the integrity and
proper connection between Line filter Z1 and Generator board; fix or
replace the faulty component
b.
if the LED H8 is BLINKING, replace the Generator board
c.
if the LED H8 is ON, replace the Generator board and then the MCU board
(see paragraph 11.3.2).
Note
The error E750 (Generator board power supply fault) can be related to the
Error E670 / E671, related to a fault on the CAN-Bus line is detected.
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