IBM 866631Y - Netfinity 7100 - 8666 Hardware Maintenance Manual page 153

Modem, printer, mouse, or non-IBM devices
Each adapter
Hard disk drives
Memory-Modules (Minimum requirement = 512 MB (4x128 MB DIMMs))
Note: Minimum operating requirements are:
a. 1 Power Supply
b. Power Backplane
c. Processor/PCI Board (with pins 2 and 3 on J23 connected together to
bypass the power switch; default is pins 1 and 2)
d. I/O Legacy Board (Verify that connection to Processor/PCI Board is
secure.)
e. 1 Microprocessor and VRM
f. 3 Terminator Cards
g. Memory Modules (with a minimum of 1 bank of four 128 MB DIMMs
(4x128))
4. Power-on the computer. If the problem remains, suspect the following FRUs in
the order listed:
Power Supply
Power Backplane
Processor/PCI Board
I/O Legacy Board
Notes:
1. If the problem goes away when you remove an adapter from the system, and
replacing that adapter does not correct the problem, suspect the Processor/PCI
Board, then the I/O Legacy Board.
2. If you suspect a networking problem and all the system tests pass, suspect a
network cabling problem external to the system.
143
Symptom-to-FRU index