Technogym Spazio Forma - There Is no Heart Rate Signal

SPAZIO FORMA: Service & Maintenance manual - rev. 1.0
Page 6.37
6.11. THERE IS NO HEART RATE SIGNAL
The machine displays this error if the receiver is not working or if it is not supplied by the CPU
board.
THERE IS NO
CARDIO SIGNAL
Is the supply v oltage on the
receiv er connector correct?
Is the supply v oltage on
connector K15 of the CPU board
correct.
Replace the receiv er
Replace or repair cable
SF-2
Replace the display CPU
board
1
2
YES
NO
YES
NO
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) Place the tester probes between pins 1 (signal) and 3 (ground) (the red and black wires) of the
4-pin receiver connector: the measured value should be +5Vdc.
(2) Place the tester probes between pins 1 (signal) and 3 (ground) (the red and black wires) of
connector K15 on the CPU board of the display: the measured value should be +5Vdc.