SYNCHRO EXCITE Class & Trend: Service & maintenance manual - rev. 2.0
Page 6.31
6.12. THE SPEED SIGNAL IS INCORRECT
The speed signal is incorrect if:
• The brake disk is incorrectly fixed to the flywheel;
• The speed sensor is defective;
• The brake board is defective.
Does the speed sensor send
the correct signal to the brake
board?
3
Replace the
speed sensor
(generator on SP models)
NO
Replace the Brake board
YES
THE SPEED
SIGNAL IS
INCORRECT
1
YES
YES
Update the brake board SW.
Is the speed signal correct?
Defective SW
NO
Carry out the Standard Setting
procedure
2
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: