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SPAZIO FORMA: Service & Maintenance manual - rev. 1.0
6.9. THE UP-DOWN MOVES IN ONLY ONE DIRECTION
The machine displays this error if:
• a relay on the driver board is defective;
• the CPU board fails to send the enable signal;
• the driver board is not able to drive the motor.
Replace the f aulty relay s
THE UP-DOWN MOTOR
MOVES IN ONE
DIRECTION ONLY
Does the CPU board send the
correct control signal in the inactiv e
direction?
Does the correct control signal f or
the inactiv e direction reach trailing
connector CN28?
Does the driv er board receiv e the
correct control signal in the inactiv e
direction?
NO
Are the relay s on the driv er board
in good condition?
1
NO
YES
2
NO
YES
3
NO
YES
4
YES
Replace the CPU board
Check and/or replace
cable SF-21A
Check and/or replace
cable SF-12
Replace the driv er board
Page 6.33
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