Hardware Faults - CAB Hermes C Series Service Manual

6 Troubleshooting and Error Treatment
32
6.2

Hardware Faults

Error message
ADC malfunction
FPGA malfunction
Invalid setup
Voltage error
V
BAT
V
MOT
24 V
24 V ext.
Table 4
Cause
Fault on the PCB CPU
Fault on the PCB CPU
Fault on the PCB CPU
Voltage of the battery on the
PCB CPU is too low
Motor voltage is too low
24 V too low
24 V at peripheral connection
too low
Hardware faults
Fault recovery
Replace the PCB CPU
Replace the PCB CPU
Replace the PCB CPU
Replace the PCB CPU
Check motor voltage (+38 V) at the measurement
point V
mot
 Figure 36 on page 35:
• Voltage too low:
Replace the power supply unit
• Voltage is correct:
Replace the PCB CPU
Check voltage at measurement point +24V
 Figure 36 on page 35:
• Voltage too low:
Replace the power supply unit
• Voltage is correct:
Replace the PCB CPU
Disconnect peripheral device
• Fault still exists:
Replace the PCB CPU
• Fault remedied:
Repair or replace peripheral device
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