Technogym Step 500i SP Service Maintenance Manual page 62

Replace the display
board and/or the 386
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.
(1) Slightly lift up the fastons 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
220 VAC or 110 VAC depending on the mains voltage.
(2) As for step (1) but across pins 3 and 1 of connector CN3 on the Brake board.
(3) Using a tester, check that all the output voltages on connector CN1 of the brake board are
correct, referring to paragraph 2.8. "Wiring".
(4) As for step (3) but on connector CN1 of the display board.
Page 6.6
A
Does the mains v oltage
reach the input to the
brake board?
Are the DC v oltages at the
output of the brake board
correct?
YES
Are the DC v oltages at the
input to the display board
correct?
STEP EXCITE: Service & maintenance manual - rev. 1.4
2
NO
YES
3
NO
YES
4
NO
Replace cable STP-00
Replace the brake
board
Replace cable STP-03