Technogym Synchro Excite 500SP Service Maintenance Manual page 65

SYNCHRO EXCITE Class & Trend: Service & maintenance manual - rev. 2.0
Replace the Brake
board
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:
To speed up the troubleshooting procedure, check the state of the power indicator LEDs on the
various circuit boards.
Check if the machine stays on for 30 seconds after having stopped pedalling. If the machine
(1)
switches off in few seconds, check if the fuse on the ELT-01cable is blown. Than check the
battery charge, if it isn't about 12Vdc, recharge the battery for 8 hour with an external power
pack, without using the machine.
Check the LEDs 1 and 2 (green and yellow), of the Display Board, are correctly lit on.
(2)
Check if the LEDs 1 and 2 (green and yellow) of the Brake Board, are correctly lighting on,
(3)
as described in paragraph: 3.1.7. "Brake board".
Using a tester, check that all the output voltages on connector CN1 of the Brake board. The
(4)
measured value should be:
• +12 Vdc between pins 6-2;
• +5 Vdc between pins 7-3.
Using a tester, check the voltage on connector CN3 of the Brake board. The measured value
(5)
should be 16-19 Vdc, between pins 1 e 2, nearly at 50 RPM. Use a tester, to estimate the RPM
signal on the CN3 connector of the Brake board. The measured value should be
approximately 30 Vac between pin 3 and a ground point.
If you replace Display board/Brake board, check that its SW version is updated, otherwise
install the last version.
B
YES
Is the RPM signal and the
DC v oltage at the input to
the brake board correct?
5
NO
Replace the Stator
Page 6.11