PLDC01938
REVISION 00
01/06/2011
TECHNICAL DEPT
Stavale
- date 05/09/2011
190/195
E2 TROUBLESHOOTING
E2.1 Troubleshooting
E2.1.1 The display does not light up
A
If the fuse is burnt out, replace it.
1
Check the 5 amp fuse F1.
B
If the fuse is intact, go to point 2.
A
If the voltage is less than 29 V, replace or recharge
the batteries.
2
Check that the battery voltage is at least 30 V.
B
If the voltage is more than 29 V, go to point 3.
A
If continuity is not present, check for damage to the
black-purple wire. If necessary, repair or replace.
3
Check the electrical continuity of the purple-
black power wire to the control panel board.
Between the power pin of the contactor TL1
and PIN 4 of the connector CN6.
B
If there is continuity, go to point 4
A
Continuity is not present. Check operation of the
emergency button and the state of the trace on the
circuit board Repair or replace the damaged
component.
4
Check the continuity between PIN 4 and PIN 1
and 2 of the connector CN 6.
B
If there is continuity, go to point 5
A
Use a tester to check the efficiency of the key
contacts in position “1”, otherwise replace.
5
Check there is continuity between the ignition
key contacts.
B
If OK, go to point 6
A
Restore the wire and/or the connections.
6
Check for a voltage of +36 V on the purple wire
powering the board, green connector CN4 -
PIN7.
B
If OK, go to point 7
A
Check or repair the control panel board.
7
Check the control panel board.
B
Replace the control panel board.
E2.1.2 The machine moves forward slowly
A
If the pedal is not working, check its operation on
the bench, see paragraph C3.2.
1
Check that the accelerator pedal is working, in
other words, that it provides the board with a
signal of between 110 - 2000 Ohms ± 100
Ohms, while the machine is moving forwards.
B
If the machine responds correctly to the accelerator
pedal, go to point 2.
A
If the sensor LED is off, go to point 3.
2
Straighten the motor wheel (ignition key on “1”)
and check that the steering sensor LED is on. *
B
If the LED is on, go to point 4.
A
If there is voltage, adjust or replace the sensor as
described in C5.1.
3
Make sure 36 V reach the black wire and red
wire on the sensor connector, wiring side.
B
If there is no voltage, restore it.
A
If maximum speed is restored, replace the
potentiometer.
4
Access the control panel potentiometer
connector, disconnect it and bridge the GREY
wire (PIN 4) and the PURPLE wire (PIN 1).
B
If there are no variations, go to point 5.
A
If the sensor LED is on and there is no voltage to
the board, go to point 6.
5
Check that there is voltage to PIN 11 on the
drive board LOGIC connector, see paragraph
C1.2.
B
If there is voltage, go to point 7
A
If there is no continuity, restore it.
6
Check the continuity of the brown wire on the
sensor connector, wiring side.
B
If there is no continuity, go to point 7
A
If speed is restored, check the continuity of the
control panel potentiometer wires.
7
On the LOGIC connector, bridge PIN 4 and
PIN 1 to exclude the control panel wiring
potentiometer.
B
If speed is not restored, replace the drive board.
*
Irrespective of the position of the control panel potentiometer, actuation of the sensor is always perceptible.
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