Technogym BIOSTRENGTH LINE, Service Maintenance Manual

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BIOSTRENGTH LINE: Service & Maintenance manual - rev. 2.1
Page 6.26
A
Check whether the motor runs
NO
Replace the motor
YES
Replace the BS-2/2R
cable
YES
Replace the selector
switch
B
Check whether the supply voltage to
the transformer is correct
NO
Replace the
transformer and/or the
rectifier bridge
5
Follow the step-by-step guide to properly diagnose the error. Pay special attention to those tests
indicated in numbered boxes, and described in detail here below:
(1) Insert the multimeter probes between pins 1 (signal) and 2 of the CN10 connector on the Bio
servo board. You should get a reading of approximately 24 Vdc.
(2) Insert the multimeter probes between pins 3 (motor up signal) and 1 or between pins 5 (motor
down signal) and 1 of the K4 connector on the CPU board. With the motor enabled you
should get a reading of approximately 4 Vdc, while with the motor stopped you should get a
reading of approximately 0 Vdc.
(3) Insert the multimeter probes between pins 3 (motor up signal) and 1 or between pins 5 (motor
down signal) and 1 of the CN7 connector on the Bio servo board. With the motor enabled you
should get a reading of approximately 4 Vdc, while with the motor stopped you should get a
reading of approximately 0 Vdc.
On Chest Press and Leg Press, the BS-6/2 cable is divided into 2 parts through the
connector CN36. Carry out the test on this connector and, if necessary, replace only the
defective section of the BS-6/2 cable.
(4) Insert the multimeter probes between pins 1 (signal) and 2 of the CN1 connector on the Bio
servo board. With the motor enabled you should get a reading of approximately 24 Vdc if
running counter-clockwise and -24 Vdc if running clockwise, while with the motor stopped
you should get a reading of approximately 0 Vdc.