Lenovo ThinkCentre Chromebox Hardware Maintenance Manual page 61

Message/Symptom
Computer will not perform a Wake On LAN
Dead computer.
Diskette drive in-use light remains on or does not light
when drive is active.
Blank screen except for flashing cursor.
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
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
Program loads from the hard disk with a known-good
diagnostics diskette in the first 3.5-inch diskette drive
FRU/Action
®
(if applicable) 1. Check power supply and signal cable connections
to network adapter.
2. Ensure network administrator is using correct MAC
address.
3. Ensure no interrupt or I/O address conflicts.
4. Network adapter (advise network administrator of
new MAC address)
1. Power Supply
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
1. Run the Memory tests.
2. Memory Module
3. System Board
1. System Board
2. Diskette Drive Cable
3. Network Adapter
1. Display
2. Video adapter (if present)
3. System Board
1. Diskette Drive
2. System Board
3. Diskette Drive Cable
1. Display
2. System Board
1. Power switch/LED assembly
2. System Board
1. Printer
2. System Board
1. Run the Setup Utility program and check Startup
sequence.
2. Diskette Drive
3. Diskette Drive Cable
4. System Board
5. Power Supply
Chapter 8
.
Service checkout and symptom-to-FRU index
55