Service manual

2-8 Service Manual
2.3 Troubleshooting a PCI Shelf
LEDs show the status of the power supplies, as well as the adapter self-
test results in the PCI shelf.
Figure 2–4 PCI Shelf
1 2 3 4
DWLPB LED numbers
OM55-99
LED Status in PCI Shelf
LED 1 - On-board power system OK
LED 2 - Motherboard self-test passed
LED 3 - 48 VDC power supply OK
LED 4 - Hose Error