Miscellaneous Error Messages - Lenovo THINKCENTRE 2491 Hardware Maintenance Manual

Error code
1820
1962

Miscellaneous error messages

Message/Symptom
Changing display colors
Computer will not power-off. See "Power problems" on
page 33.
Computer will not PXE from server
Computer will not perform a Wake on LAN® (if applicable)
Dead computer. See "Power problems" on page 33.
Diskette drive in-use light remains on or does not light
when drive is active.
Flashing cursor with an otherwise blank display.
POST error message
More than one external fingerprint
reader is attached. Power off and
remove all but the reader that you
set up within your main operating
system.
No operating system found. Press
any key to repeat boot sequence.
FRU/Action
Display/Monitor
1. Power Switch
2. System Board
3. Riser card, if installed
1. Ensure that network is in startup sequence as first
device or first device after diskette
2. Ensure that network adapter is enabled for PXE
3. Network adapter (Advise network administrator of
new MAC address)
1. Check power supply and signal cable connections
to network adapter.
2. Ensure that the operating system settings are set to
enable Wake on LAN.
3. Ensure Wake on LAN feature is enabled in
Setup/Configuration (see "Starting the Setup Utility
program" on page 41)
4. Ensure network administrator is using correct MAC
address.
5. Ensure no interrupt or I/O address conflicts.
6. Network adapter (advise network administrator of
new MAC address)
1. AC/DC Power Adapter
2. System Board
1. Diskette Drive
2. System Board
3. Diskette Drive Cable
1. System Board
2. Primary Hard Disk Drive
3. Hard Disk Drive Cable
Description/Action
If more than one external fingerprint
reader is connected to a computer,
this error message will be displayed
to inform you to remove all of the
fingerprint keyboards except the
one compatible with the fingerprint
application on your computer.
This error occurs only after the POST
is completed.
Press any key to repeat boot
sequence.
.
Chapter 7 Symptom-to-FRU index
65