Technogym Runrace - There Is no Heart Rate Signal

RUNRACE : Service & Maintenance Manual - rev. 2.0
Page 6.46
6.15. 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 voltage on the
receiver connector correct?
Is the supply voltage on
connector K7 of the CPU board
correct.
Replace the receiver
Replace or repair cable
BK-7
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) (corresponding to the red and
black wires) of the 4-pin receiver connector: the measured voltage should be +5Vdc.
(2) Place the tester probes between pins 1 (signal) and 3 (ground) (corresponding to the red and
black wires) of connector K7 on the CPU board of the display: the measured voltage should
be +5Vdc.