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IBM 5150 Hardware Maintenance Manual

IBM 5150
357 pages
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Position
the
System Unit Power switch
to
Off
for five seconds,
then
power
the
System Unit on. Check for
the
voltage
at
Pin 16
on
the
Diskette Drive Signal Cable
connector
to
decrease from 2.0-5.5 Vdc
to
0-0.8 Vdc before
the
"beep"
at
the
end
of
the POST.
•
DID
THE
VOLTAGE AT PIN 16 DECREASE FROM
2.0-5.5 Vdc TO 0-0.8 Vdc?
NO
Replace
the
Diskette Drive Adapter. See Section 3,
"Removal/Replacement. "
YES
600-21

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IBM 5150 Specifications

General IconGeneral
ProcessorIntel 8088
Clock Speed4.77 MHz
RAM16 KB - 256 KB
ManufacturerIBM
Model5150
Release Year1981
Storage5.25-inch floppy drives
GraphicsMDA or CGA
Operating SystemIBM PC DOS
PortsCassette, keyboard
Expansion Slots5

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