EP Equipment CPD30L1-B, Service Manual

Page: 190 / 235

REV. 05/2020
TROUBLESHOOTING
10
178
10.2 Troubleshooting Solutions of Common Faults
Table 10.1 lists the common faults that may occur and handling
methods. Mainly consists of the following items:
Table 10.1 Troubleshooting of Common Faults
Fault Fault Symptom Troubleshooting Order * Troubleshooting Measures
Power supply
failure 1. Whole vehicle
power outrage
a. Power supply failure
b. Fuse failure
c. Emergency stop switch or circuit
failure
d. Key switch or circuit failure
1. Check the voltage of storage
battery
2. Check the fuses
3. Check key switch and its circuit
4. Check emergency stop switch
and its circuit
Travel Fault 1. Forward and rever-
se moving failures of
the vehicle, but other
functions are normal
a. Parking brake switch and seat
switch or its circuit connection
failure
b. Gearbox failure
c. Travel switch or its circuit
connection failure
d. Drive motor or its circuit
connection failure
e. Controller failure
Controller failure error, carry out
troubleshooting according to the
fault code information on the
instrument.
1) Check if parking brake switch
and seat switch or the connec-
tion of its circuit is normal;
2) Check the gearbox;
3) Check the travel switch and its
connection circuit;
4) Check the drive motor and its
connection circuit;
5) Replace the controller.
2. The vehicle can
travel at low speed,
but cannot travel at
high speed Failures due to external factors:
a. Motor bearing blocked
b. Gearbox bearing blocked
Failures due to internal factors:
a. Drive motor speed encoder
failure
b. Controller failure
Controller failure error, carry out
troubleshooting according to the
fault code information on the
instrument .
1) Check if the motor rotation is
normal;
2) Check the speed encoder and
its connection circuit;
4) Remove the gearbox, check if
the gear rotation is smooth and
if there is blocking;
5) Replace the controller
* Carry out trouble shooting in accordance with the order listed
in the table, it can help you quickly identify problems and
resolve accordingly.