IBM 315, Hardware Maintenance Manual Supplement

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Miscellaneous Error Messages
Message/Symptom FRU/Action
Changing colors. 1. Display
Computer will not power-off.
See “Power Supply” on
page 59. 1. Power Switch
2. System Board
Dead computer.
See “Power Supply” on
page 59. 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 59.
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 54.
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 61.
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
Serial or parallel port device
failure (system board port). 1. External Device
Self-Test OK?
2. External Device
3. Cable
4. System Board
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