Lenovo 7812, Hardware Maintenance Manual

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Miscellaneous error messages
Message/Symptom FRU/Action
Changing display colors Display/Monitor
Computer will not power-off. See “Power
Supply Problems” on page 55.
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 51)
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 “Power Supply
Problems” on page 55.
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
Flashing cursor with an otherwise blank
display.
1. System Board
2. Primary Hard Disk Drive
3. Hard Disk Drive Cable
Incorrect memory size during POST
1. Run the Memory tests
2.
Memory Module
3.
System Board
″
Insert a Diskette
″
icon appears with a
known-good diagnostics diskette in the first
3.5-inch diskette drive.
1. System Board
2. Diskette Drive Cable
3. Network Adapter
Intensity or color varies from left to right of
characters and color bars
1. Display
2. Video adapter (if present)
3. System Board
No power or fan not running
1. See “Power Supply Problems” on page
55.
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Hardware Maintenance Manual