IBM 689912U - IntelliStation Z - Pro 6899, Hardware Maintenance Manual

Page: 89 / 472

Message/Symptom FRU/Action
“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 28.
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 31.
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 27.
Program loads from the
hard disk with a
known-good diagnostics
diskette in the first 3.5-inch
diskette drive. 1. Run Setup
2. Diskette Drive
3. Diskette Drive Cable
4. System Board
5. Power Supply
RPL computer cannot
access programs from its
own hard disk. 1. If network admin. is
using LCCM Hybrid
RPL, check startup
sequence: First
device: network;
Second device: hard
disk
2. Hard disk drive
RPL computer does not
RPL from server. 1. Check startup
sequence
2. Check the “Network
Adapter LED Status”
on page 11.
Serial or parallel port device
failure (system board port). 1. External Device
Self-Test OK?
2. External Device
3. Cable
4. System Board
Serial or parallel port device
failure (adapter port). 1. External Device
Self-Test OK?
2. External Device
3. Cable
4. Alternate Adapter
5. System Board
6. Riser Card
Service Information
79