IBM NetVista Hardware Maintenance Manual page 78

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IBM NetVista Type 6838, 6848: Hardware Maintenance Manual
Message/Symptom
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
Program loads from the hard disk with a
known-good diagnostics diskette in the first
3.5-inch diskette drive
RPL computer cannot access programs from
its own hard disk.
RPL computer does not RPL from server
Serial or parallel port device failure (system
board port)
FRU/Action
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 "Power supply" on page 44.
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
1. Run Setup
2. Diskette Drive
3. Diskette Drive Cable
4. System Board
5. Riser card
6. Power Supply
1. If network administrator is using
LCCM Hybrid RPL, check startup
sequence:
a. First device - network
b. Second device - hard disk
2. Hard disk drive
1. Check startup sequence
2. Check the network adapter LED status
1. External Device Self-Test OK?
2. External Device
3. Cable
4. System Board