SYNCHRO Excite +: Service & maintenance manual - rev. 7.1
Page 6.15
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 LED 1 (green) of the Display Board, is correctly lit on.
(2) Place the tester probes across pins 3 and 1 of CN4 connectors on the Brake board. The
measured value should be approximately 220VAC or 110VAC depending on the mains
voltage.
(3) Slightly lift up the fast on the machine power entry module. Place the tester probes across the
live and neutral pins on the same connector. The measured value should be approximately
220VAC or 110VAC depending on the mains voltage.
(4) Using a tester, check that all the output voltages on connector CN1 of the Brake board. The
measured value should be:
• +12Vdc between pins 6-2;
• +5Vdc between pins 7-3.
(5) Place the tester probes across pins 1 and 2 of CN15 of Display Board. The measured value
should be +12Vdc..
If you replace Display Board and/or Brake Board, check that its SW version is
updated, otherwise install the last version.
The TV and RADIO channels are only stored in a file in the FLASH memory. Then
the channels will be re-store the replacement of the CPU Board.
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