Lenovo M55p - ThinkCentre - 8808 Hardware Maintenance Manual page 81

Message/Symptom
Computer will not perform a Wake On LAN® (if applicable)
Dead computer. See "Hard disk drive boot error" on page
51.
Diskette drive in-use light remains on or does not light
when drive is active.
Flashing cursor with an otherwise blank display.
Incorrect memory size during POST
"Insert a Diskette" icon appears with a known-good
diagnostics diskette in the first 3.5-inch diskette drive.
Intensity or color varies from left to right of characters
and color bars
No power or fan not running
Non-system disk or disk error-type message with a
known-good diagnostic diskette.
Other display symptoms not listed above (including blank
or illegible display)
Power-on indicator or hard disk drive in-use light not on,
but computer works correctly
Printer problems
FRU/Action
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 47)
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. Power Supply
2. System Board
3. Riser card
1. Diskette Drive
2. System Board
3. Diskette Drive Cable
4. Riser card
1. System Board
2. Primary Hard Disk Drive
3. Hard Disk Drive Cable
4. Riser card
1. Run the Memory tests
2. Memory Module
3. System Board
1. System Board
2. Diskette Drive Cable
3. Riser card
4. Network Adapter
1. Display
2. System Board
1. See "Hard disk drive boot error" on page 51.
1. Diskette Drive
2. System Board
3. Diskette Drive Cable
4. Riser card
1. Display
2. System Board
1. Power Supply
2. System Board
3. LED Cables
1. Printer
Chapter 7
.
Symptom-to-FRU Index
75