There Is No Heart Rate Signal; Hfu Telemetric Receiver - Technogym Synchro Excite 500SP Service Maintenance Manual

SYNCHRO EXCITE Class & Trend: Service & maintenance manual - rev. 2.0

6.14. THERE IS NO HEART RATE SIGNAL

6.14.1. HFU
TELEMETRIC RECEIVER
The machine displays this error if:
1. electromagnetic noise saturate the HR receiver which does not display any value due to a
specific SW filter which cut every signal, greater than 220 bpm;
2. the receiver is not working properly;
3. the receiver is not supplied by the display board.
Replace display 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:
Carry out the troubleshooting procedure: 6.15. "The telemetric heart rate signal is incorrect".
(1)
Place the tester probes across pins 1 and 2 of connector CN1 of the receiver. The measured
(2)
value should be +5 Vdc.
As for step (2) but across pins 1 and 8 of connector CN3 on the display board.
(3)
THERE IS NO HR
SIGNAL
Carry out the
troubleshooting procedure
"THE TELEMETRIC
SIGNAL IS INCORRECT"
Is the supply v oltage correct at
the input to the receiv er?
NO
Is the supply v oltage correct at
the output of the display board?
1
2
YES
NO
3
YES
Replace the receiv er
Replace ELT-16 cable
Page 6.35