Dell PowerEdge NM176 Hardware Owner's Manual page 30

Table 1-5. Diagnostic Indicator Codes (continued)
Code
A B C D
A B C D
A B C D
A B C D
A B C D
A B C D
A B C D
= y e l l o w
= g r e e n
= o f f
30
About Your System
Causes
Possible video card
failure.
Diskette drive or hard
drive failure.
Possible USB failure. See "Troubleshooting a USB Device"
No memory modules
detected.
System board failure. See "Getting Help" on page 127.
Memory
configuration error.
Possible system board
resource and/or
system board
hardware failure.
Corrective Action
See "Troubleshooting Expansion
Cards" on page 113.
Ensure that the diskette drive and
hard-drive are properly connected.
See "Installing a Hard Drive" on
page 67 for information on the
drives installed in your system.
on page 102.
See "Troubleshooting System
Memory" on page 108.
See "Troubleshooting System
Memory" on page 108.
See "Troubleshooting IRQ
Assignment Conflicts" on page 98.
If the problem persists, see "Getting
Help" on page 127.