13-2 Troubleshooting of Regular Malfunctions
13.1.3 Troubleshooting---System Cannot Power up
No. Fault Description Cause Analysis Measure
assembly error or 5V
board assembly error
supply assembly or 5V
board assembly
AC power indicator remains off;
2. Beaker cannot be
closed
3. 5V board assembly
error
connection of AC
2. Close the breaker
3. Replace the 5V
board assembly
3 AC power indicator: ON;
Power on/off indicator: off after
pressing the power button;
Power status indicator: 3.3 V/5 V/12 V
is off;
PC carrier board error Replace PC carrier
board
4 AC power indicator: ON;
Power on indicator: green indicator
blinks after pressing the power button;
Power status indicator: 3.3 V/5 V/12 V
is off;
CPU module assembly
failed to send S3# invalid
signal
Replace CPU module
5 AC power indicator: ON;
Power on indicator: orange indicator
blinks after pressing the power button;
Power status indicator: 3.3 V/5 V/12 V
is off;
There is no 12V output
from AC power assembly
Replace AC power
assembly
6 AC power indicator: ON;
Power on/off indicator: green after
pressing the power button;
Power status indicator: 12 V is on; 3.3
V/5V/ is off;
There is no 3.3V,5V
output from DC box
assembly
Replace DC box
assembly