IBM 3745 Series, Installation And Maintenance Manual

Page: 99 / 270

Message/Symptom FRU/Action
Computer will not Wake On LAN 1. Check power supply and signal
cable connections to network adapter.
2. Ensure Wake On LAN feature is
enabled in Setup/Configuration. See
“Service Processor Configuration / Setup
Utility” on page H-9.
3. Ensure Network network administrator
is using correct MAC address.
4. Ensure no interrupt or I/O address
conflicts.
5. Network adapter (Advise network
administrator of new MAC address).
Dead computer.
See “Power-Supply” on page 3-21 1. Power Switch
2. Power Supply
3. 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. Diskette Drive
2. System Board
3. Diskette Drive Cable
4. Network Adapter
Intensity or color varies from left to right of
characters and color bars. 1. Display
2. System Board
No power, or fan not running. 1. See “Power-Supply” on page 3-21
Nonsystem disk or disk error-type
message with a known-good diagnostic
diskette. 1. Diskette Drive
2. System Board
3. Diskette Drive Cable
Other display symptoms not listed above
(including blank or illegible display). 1. See “Display” on page 3-19
2. System Board
3. Display
Power-on indicator or hard disk drive
in-use light not on, but computer works
correctly. 1. Power Supply
2. System Board
3. LED Cables
Printer problems. 1. See “Printer” on page 3-20
Program loads from the hard disk with a
known-good diagnostics diskette in the
first 3.5-inch diskette drive. 1. Check the Configuration/Setup
Utility
2. Diskette Drive
3. Diskette Drive Cable
4. System Board
5. Power Supply
Chapter 3. Service Processor Troubleshooting
3-15