SYNCHRO Excite +: Service & maintenance manual - rev. 7.1
Page 6.27
Follow the procedure step by step to correctly diagnose the problem. Take particular care with the
checks highlighted by circled numbers, which are described in detail below:
(1) In Place the tester probes across pins 1 and 3 of connector CN1 of the TGS reader. The
measured value should be +12Vdc.
(2) As for step (1) but across pins 1 and 8 of connector CN19 (CPU Board) or on the CN7
connector (ARM Board).
(3) Use the serial communications test described at paragraph: 6.1.3.3 “Serial Ports Test”.
If you replace ARM/CPU Board, check that its SW version is updated, otherwise
install the last version.
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