Technogym Step 500i SP Service Maintenance Manual page 67

STEP EXCITE: Service & maintenance manual - rev. 1.4
Replace the LCD
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) Place the tester probes across the ends of the cable coming from the generator. The measured
value should be approximately 110 or 220 VAC, depending on the mains voltage.
(2) As for step (1) but across pins 1 and 2 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 CN16 of the connector board.
(5) As for step (3) but on connector CN5 of the CPU board.
B
Is the LCD neon lamp on?
Check the connection or
try to replace the cable
between CPU board and
TTL board.
It works?
NO
Try to replace the CPU
board.
It works?
NO
YES
YES
NO
YES
Replace LCD
Cable damage
CPU board damage
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