SYNCHRO Excite +: Service & maintenance manual - rev. 7.1
Page 6.30
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) Check the continuity of the signal through two cables ELT-10 and ELT-31: Check also they
are correctly connected, referring to paragraph: 2.8. “Wiring diagrams”.
(2) Place the tester probes across pins 1 and 2 on the connector J3 of Hand Sensor Board. The
measured value should be +5Vdc.
(3) As at step (2) but on pin 1 and 6 on CN4 connector (ARM Board) and on CN23 connector
(CPU Board).
(4) Check the correct display SW version, according to the “EXCITE SW SMART TABLE” you
can find in TG Direct ,“NEWS” section.
Check the grounding of the Hand Sensor Board (HS), measuring the resistance value
between:
a. The Faston on the HS Board and the ground node on the equipment;
b. The ground node of the equipment and the main wall socket.
The measured value should be approximately lower than 1Ω (Ohm).
Check finally the grounding of the main wall socket, measuring that the following voltages are
present:
P – N (phase – neutral) = 220Vac / 110 Vac
P – G (phase – ground) = 220Vac / 110 Vac
N – G (neutral – ground) = 0 Vac
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