
52
MicroController Control System
Troubleshooting
Troubleshooting Problem List
TROUBLESHOOTING PROBLEM LIST
Problem #
CENTRAL VEHICLE MONITORING SYSTEM (CVMS) PROBLEMS
1
CVMS does not work, with no lift truck operation.
2
CVMS does not work at all, lift truck operation normal.
3
Display portion of CVMS seems random or wrong.
Lift truck operation normal.
4
Display all symbols two times after key switch and seat switch closed then blank,
no lift truck drive or pump motor operation.
“SELF” DIAGNOSTIC PROBLEMS
5
Display = “F”, no lift truck operation
6
Display = “A3” and “ accelerator symbols”, no lift truck operation.
7
Seat switch circuit defect.
8
Direction switch circuit defect.
9
Lift switches circuit defect.
10
Tilt switch circuit defect.
11
Auxiliary switch circuit defect.
12
Park brake switch circuit defect.
13Pedal brake switch circuit defect.
14
Accelerator circuit defect.
15
Incorrect contactor operation.
“RUN TIME” DIAGNOSTIC PROBLEMS
16
Display = “EE”, no lift truck drive operation.
17
Display = “EE” (Flashing), no lift truck drive operation.
18
Display = “E1” lift truck operation normal.
19
Overtemperature is ON and display = and EC or Ec. Lift truck accelerates slower than normal
or lifting speed is slower than normal.
20
Overtemperature is ON and display = and Ed.
Pump and steering operation normal. Acceleration slow.
21
Overtemperature is ON and display = and EP. Lifting speed slow.
Drive and power steering operation normal.
22
Display = “EL”. No hydraulic (lift and tilt). Steering normal.
23Hourmeter does not work.
24
Normal hydraulic operations, display is normal and drive current limit is half.
25
Drive motor does not operate or operates with low power or is erratic.
Pump and power steering systems operation normal.
26
Horn does not function correctly. Lift and drive operation normal.
27
Auxiliary lighting and/or alarm does not function correctly.
Lift and drive operation normal.
Содержание B20S-3
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