IBM x3755 Installation Guide - Page 67

Lit light path, diagnostics LED

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v Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved. v See the parts listing in the Problem Determination and Service Guide to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU). v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a trained service technician. Lit light path diagnostics LED with the system-error LED also lit Description Action All LEDs off (the power LED is lit). No action necessary. OVERSPEC There is insufficient power to power the system. 1. Check that ac power is available to all power supplies. 2. Reseat any failed power supplies. 3. Replace any failed power supplies. 4. Add an optional power supply if only one power supply is installed. 5. Remove optional devices. 6. Use 220 V ac instead of 110 V ac. PS 1 Power supply 1 has failed or has been removed. Note: In a redundant power configuration, the dc power LED on one power supply might be off. 1. Reinstall the removed power supply. 2. Reseat the failed power supply. 3. Replace the failed power supply. 4. Remove ac power before restoring dc power. PS 2 Power supply 2 has failed or has been removed. Note: In a redundant power configuration, the dc power LED on one power supply might be off. 1. Reinstall the removed power supply. 2. Reseat the failed power supply. 3. Replace the failed power supply. 4. Remove ac power before restoring dc power. CPU A microprocessor/memory card has failed, or a component on the card has failed. Note: Make sure that the microprocessor/memory card is installed in the correct sequence; see "Installing a microprocessor/memory card" on page 14. 1. See the BMC log or the system-error log for the source of the fault. 2. Find the failing, missing, or mismatched microprocessor/memory card by checking the LEDs on top of the card. 3. Remove the microprocessor/memory card with the lit error LED on the top of the card; then, press the light path diagnostics button on the microprocessor/memory card to identify the failed component. 4. Reseat the microprocessor/memory card. 5. Replace the microprocessor/memory card. CNFG A microprocessor/memory card configuration error has occurred. 1. See the BMC log or the system-error log for the source of the fault. 2. Make sure that the microprocessor/memory cards are installed in the correct sequence and that a passthru card is correctly installed, if required. See "Installing a microprocessor/memory card" on page 14. Chapter 6. Solving problems 55

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v
Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v
See the parts listing in the
Problem Determination and Service Guide
to determine which components are
customer replaceable units (CRU) and which components are field replaceable units (FRU).
v
If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
Lit light path
diagnostics LED with
the system-error LED
also lit
Description
Action
All LEDs off (the
power LED is lit).
No action necessary.
OVERSPEC
There is insufficient power to power
the system.
1.
Check that ac power is available to all power
supplies.
2.
Reseat any failed power supplies.
3.
Replace any failed power supplies.
4.
Add an optional power supply if only one power
supply is installed.
5.
Remove optional devices.
6.
Use 220 V ac instead of 110 V ac.
PS 1
Power supply 1 has failed or has
been removed.
Note:
In a redundant power
configuration, the dc power LED on
one power supply might be off.
1.
Reinstall the removed power supply.
2.
Reseat the failed power supply.
3.
Replace the failed power supply.
4.
Remove ac power before restoring dc power.
PS 2
Power supply 2 has failed or has
been removed.
Note:
In a redundant power
configuration, the dc power LED on
one power supply might be off.
1.
Reinstall the removed power supply.
2.
Reseat the failed power supply.
3.
Replace the failed power supply.
4.
Remove ac power before restoring dc power.
CPU
A microprocessor/memory card has
failed, or a component on the card
has failed.
Note:
Make sure that the
microprocessor/memory card is
installed in the correct sequence;
see “Installing a
microprocessor/memory card” on
page 14.
1.
See the BMC log or the system-error log for the
source of the fault.
2.
Find the failing, missing, or mismatched
microprocessor/memory card by checking the
LEDs on top of the card.
3.
Remove the microprocessor/memory card with the
lit error LED on the top of the card; then, press the
light path diagnostics button on the
microprocessor/memory card to identify the failed
component.
4.
Reseat the microprocessor/memory card.
5.
Replace the microprocessor/memory card.
CNFG
A microprocessor/memory card
configuration error has occurred.
1.
See the BMC log or the system-error log for the
source of the fault.
2.
Make sure that the microprocessor/memory cards
are installed in the correct sequence and that a
passthru card is correctly installed, if required. See
“Installing a microprocessor/memory card” on page
14.
Chapter 6. Solving problems
55