Technogym Step 500i SP Service Maintenance Manual page 64

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.
(1) Check if the machine stays on for 30 seconds after having stopped pedalling. If the machine
switches off in few seconds, check if the fuse on the STP-01 cable is blown.
(2) Place the tester probes across the ends of the cable from the alternator. The measured voltage
should be approximately 15-17 VDC at a speed of about 30 SPM.
(3) As for step (1) but across pins 1 and 2 of connector CN3 on the brake board.
(4) Using a tester, check that all the output voltages on connector CN1 of the brake board are
correct, referring to paragraph 2.8. "Wiring".
(5) As for step (4) but on connector CN1 of the display board.
Page 6.8
STEP EXCITE: Service & maintenance manual - rev. 1.4