Lenovo 7269D7U - Topseller M58e Sff E7500 2.93G 3Gb 320Gb Dvdrw W7p/Xpp, Hardware Maintenance Manual, Page: 68 / 536

Beep Symptom FRU/Action
1 long and 2 short beeps Monitor or video adapter card
error
Perform the following actions in order.
1. Make sure the monitor is properly connected to the
computer.
2. Replace the video adapter card (if present).
3. Replace the system board.
1 long and 3 short beeps Keyboard error Perform the following actions in order.
1. Make sure the keyboard is properly connected to the
keyboard connector.
2. Replace the keyboard.
3. Replace the system board.
1 long and 9 short beeps BIOS ROM error Perform the following actions in order.
1. Start the Setup Utility program and press F7 to
load defaults and then press F10 to Save and exit.
See Chapter 6 “Diagnostics, Test and Recovery
Information” on page 39.
2. Perform a Boot block recovery. See “Updating
(flashing) BIOS from your operating system” on page
522.
3. Replace the system board.
Continuous long beep DRAM memory error Perform the following actions in order.
1. Make sure the memory module(s) are properly seated
in the connector(s).
2. Replace the memory module(s).
3. Replace the system board.
POST error codes
Each time you power-on the system, it performs a series of tests that check the operation of the system
and some options. This series of tests is called the
Power-On Self-Test , or POST . POST does the following
operations.
• Checks some basic system-board operations
• Checks the memory operation
• Starts the video operation
• Verifies that the boot drive is working
If the POST detects a problem, an error message appears on the screen. A single problem can cause several
error messages to appear. When you correct the cause of the first error message, the other error messages
probably will not appear on the screen the next time you turn on the system.
POST Error Message Description/Action
CMOS battery failed The CMOS battery is no longer functional.
Replace the battery.
CMOS checksum error - defaults loaded Checksum of CMOS is incorrect.
The computer loads the default configuration settings.
This error might indicate that CMOS has become corrupt
due to a weak CMOS battery.
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ThinkCentre Hardware Maintenance Manual