Technogym BIOSTRENGTH LINE, Service Maintenance Manual

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BIOSTRENGTH LINE: Service & Maintenance manual - rev. 2.1
Page 6.30
6.12. THE LCD DISPLAYS THE MESSAGE “WEIGHT STACK
PROBLEM = LIMIT SWITCH SENSOR”
This error message appears during the initial machine reset, when the CPU board receives the
encoder signal from the Bio servo board, but does not detect a change in the zero sensor signal, after
enabling movement of the weight stack motor in one direction. This means there is movement but
no zero signal.
Carry out the tests shown in the diagram below by passing the selection brush, with
magnet inserted, in front of the sensor.
WEIGHT STACK
PROBLEM = LIMIT
SWITCH SENSOR
Adjust the position of
zero sensor and/or
replace the zero sensor
Replace the BS-00
cable
Check whether the zero sensor
signal on the connector CN27 is
correct
NO
Check whether the zero sensor
input signal to the Bio servo
board is correct
1
2
NO
YES
Replace the BS-6/2
cable
Check whether the zero sensor
input signal to the CPU board is
correct
YES
4
NO
Replace the CPU board
YES
Replace the Bio servo
board
Check whether the zero sensor
output signal at the Bio servo
board is correct
3
NO
YES