IBM Netfinity 5100 8658 21Y, Manual

Page: 194 / 246

Check the LEDs on all the power supplies, see“Power
supply LED errors” on page 170. If the LEDs indicate the
power supplies are working correctly, return here and do
the following:
1. Power-off the computer.
2. Be sure the system is cabled correctly.
3. Remove or disconnect the following (one at a time)
until you find the failure (power-on the computer and
reconfigure each time).
v Any external devices
v Surge suppressor device (on the computer)
v
Modem, printer, mouse, or non-IBM devices
v Each adapter
v Drives
v
Memory-Modules (Minimum requirement = 512 MB
(4x128 MB DIMMs))
Note: Minimum operating requirements are:
a. 1 Power Supply
b. Power Backplane
c. System Board
d. 1 Microprocessor and VRM
e. 3 Terminator Cards
f. Memory Module (with a minimum of 1 bank of
128 MB DIMMs)
4. Power-on the computer. If the problem remains,
suspect the following FRUs in the order listed:
v
Power Supply
v Power Backplane
v System 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 System Board.
2. If you suspect a networking problem and all the system
tests pass, suspect a network cabling problem external
to the system.
184
: Netfinity 5100 Type 8658 Models 11Y, 21Y, 31Y,
41Y, 51Y, 1RY, 2RY, 3RY, 4RY, 5RY