No-Beep Symptoms; Light Path Diagnostic Panel System Error Led - IBM Eserver xSeries 335 Type 8676 Hardware Maintenance Manual And Troubleshooting Manual

Note: See "System" on page 116 to determine which components should be replaced by a field service technician.
Beep/symptom
Repeating short beeps

No-beep symptoms

Note: See "System" on page 116 to determine which components should be replaced by a field service technician.
No-beep symptom
No beep and the system
operates correctly.
No beep and no video (System
error LED is OFF)
No beep and no video (System
Attention LED is ON)

Light Path Diagnostic panel system error LED

The system-error LED is lit when an error is detected. If the system-error LED is lit,
remove the cover and check the diagnostic panel LEDs. The following table is a
complete list of diagnostics panel LEDs followed by the FRU or action for correcting
the problem. The information in the table is valid only when the system-error LED is
lit.
Notes:
1. If a diagnostics panel LED is lit and the information LED panel system-error
2. To locate the LEDs on the system board, see "System-board LEDs" on page 44.
3. Check the System Error Log for additional information before replacing a FRU.
4. The DIMM error LEDs, microprocessor error LEDs, and VRM error LEDs turn
Note: See "System" on page 116 to determine which components should be replaced by a field service technician.
Diagnostics panel LED
All LEDs off (Check System Error
Log for error condition, then clear
System Error Log when the
problem is found.)
CPU (Microprocessor failure. The
LED next to the failing CPU is on.)
CNFG (The microprocessor or
microprocessor VRM configuration
is incorrect.)
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xSeries 335 Type 8676, Type 8830: Hardware Maintenance Manual and Troubleshooting Guide
FRU/action
1. Keyboard
2. System board
FRU/action
1. System board
v See "Undetermined problems" on page 112.
v See "Light Path Diagnostic panel system error LED".
LED is off, there is probably an LED problem. Run LED diagnostics.
off when the system is turned off.
FRU/action
1. System Error Log is 75% full; clear the log.
2. PFA alert; check log for failure; clear PFA alert; remove ac power for at
least 20 seconds, reconnect, then turn on the system.
3. Run Light Path Diagnostics.
1. Failing microprocessor
2. System board
1. Verify that microprocessors are compatible (see "Installing a
microprocessor" on page 55).
2. If only one microprocessor is installed, make sure it is located in socket
U82.
3. Verify that VRM is present if two microprocessors are installed.
4. Microprocessor.
5. VRM.