IBM 88625RX, Руководство по установке

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2. Note that the MEM LED on the light path diagnostics panel is lit; one of the
DIMMs in the memory cassette is defective.
3. Open the cover and locate the lit LED beside the defective DIMM.
Note: The lit LEDs light the connector retaining clips; look for a lit retaining clip
to identify a failed DIMM.
4. Follow the instructions in “Installing memory modules” on page 9 to remove and
replace the DIMM.
Light path diagnostics panel
The following illustration shows the LEDs on the Level 2 Light Path Diagnostics
panel, which is on the side of the operator information panel.
DASD NMI PCI EXP
LOG PS2 CPU FAN
VRM OVER SPEC TEMP
NR SP MEM REMIND
PS1
For more information about the Light Path Diagnostics feature, see the Hardware
Maintenance Manual and Troubleshooting Guide . The following table describes the
LEDs on the Light Path Diagnostics panel.
Light Path
Diagnostics
panel LED Description
PS1 Power supply number 1 failure
PS2 Power supply number 2 failure
TEMP System over temperature condition
FAN Hot-swap fan or power-supply fan failure
VRM VRM failure
CPU Microprocessor failure
PCI PCI failure
MEM Memory failure
DASD Hard disk drive failure
NR Nonredundant power mode
NMI Nonmaskable interrupt
SP Remote Supervisor Adapter II failure
EXP Attached expansion I/O failure
LOG See event log or Remote Supervisor Adapter II log for non-optimal
condition information
OVER SPEC Power supplies being overdriven
REMIND button Press to invoke remind mode
Notes:
1. The server requires replaceable voltage regulator modules (VRMs) with
microprocessors 3 and 4.
2. The server supports a maximum of two power supplies.
Chapter 6. Solving problems
57