Troubleshooting During Power-Up
1-11
Figure 1-8
CCL Module Troubleshooting Steps
CCL Module
Power LED
is ON
Power LED
PIU 1
PIU 2
PIU 3
PIU 4
Rear
No
BXB-0077A-92
Check the BLOWER OK signal.
Check for airflow blockage at the top and bottom of
the cabinet.
Check the air pressure in the cabinet.
CCL Module
PIU LEDs
Go On
No
Check AC input voltage.
Check the cabling from the DC distribution
box to the CCL module.
Check each power regulator.
Replace the CCL module.
Measure the voltage at the J5 connector on
the CCL module. If the BLOWER OK L signal
is deasserted and the blower is spinning, then
replace the blower.