Chapter 4. Error Analysis and Fault Isolation
EK–SMCPP–UG. A01
4–7
Table 4–3 EMU LED Displays (continued)
Display
Subsystem Status
Blower fault. Operational blowers are running at high
speed.
Corrective Action
Replace defective blowers.
Comment (Refer to Figure 1–18)
In this example, blowers 1 and 7 are not operating
and must be replaced.
Blower fault. Operational blowers are running at high
speed.
Probable Cause
One of the following error conditions exist:
A blower is removed.
All blowers in one bank are not operating.
Multiple blowers are installed incorrectly.
Corrective Action
Complete first corrective action. If it does not correct
the problem, complete the second.
Replace the missing blower.
Remove and install blowers correctly within 8
minutes.
Replace defective blowers.
Comment (Refer to Figure 1–18)
In this example, the following condition exists in Bank
1:
A blower is removed.
Or
Two or more blowers are not operating
Failure to replace the missing blower within 8 minutes
can result in an automatic controlled power shut
down.
Configuration error.
Probable Cause
One or more of the following conditions exists:
Configuration error
Slave EMU cannot communicate with master EMU
External SHELF_OK signal indicates error
Corrective Action
See “EMU System Fault Code Displays” and
complete corrective actions for the specific error
code.
