Lenovo ThinkCentre E73z, Hardware Maintenance Manual, Page: 65 / 124

Error code POST error message Description/Action
1820
More than one external fingerprint
reader are attached. Power off and
remove all but the reader that you set
up within your main operating system. If more than one external fingerprint
reader are 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.
1962 No operating system found. Press
any key to repeat boot sequence. This error occurs only after the POST
is completed.
Press any key to repeat boot
sequence.
Miscellaneous error conditions
Message/Symptom FRU/Action
Changing display colors Display/Monitor
Computer will not power-off. See “Hard disk drive boot
error” on page 59.
1. Power Switch
2. System Board
3. Riser card, if installed.
Computer will not RPL from server 1. Ensure that network is in startup sequence as first
device or first device after diskette.
2. Ensure that network adapter is enabled for RPL.
3. Network adapter (Advise network administrator of
new MAC address)
Computer will not perform a Wake On LAN
®
(if applicable) 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 55)
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)
Dead computer. See “Hard disk drive boot error” on page
59. 1. Power Supply
2. System Board
Diskette drive in-use light remains on or does not light
when drive is active. 1. Diskette Drive
2. System Board
3. Diskette Drive Cable
Blank screen except for flashing cursor. 1. System Board
2. Primary Hard Disk Drive
3. Hard Disk Drive Cable
Chapter 7
.
Symptom-to-FRU Index
61