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IBM PCjr Hardware Maintenance And Service

IBM PCjr
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1.
Set
the
system
unit's
Power
switch
to
Off.
2. Install a new 64KB memory
and
display expansion.
3.
Perform
advanced
POST.
DID
YOU
HEAR
ONE
BEEP?
The
problem
has
been
corrected.
Reconnect
all
removed
items,
then
repeat
advanced
POST
and
the
advanced
tests
to
ensure
that
the IBM
PCjr
is operating
correctly.
The
system
board
is
bad.
Replace
it.
Reattach
the original 64KB memory
and
display
expansion.
Reconnect
all
other
removed
items,
then
repeat
advanced
POST
and
the
advanced
tests
to
ensure
that
the
IBM
PCjr
is operating
correctly.
Power
3-020-5

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IBM PCjr Specifications

General IconGeneral
BrandIBM
ModelPCjr
CategoryDesktop
LanguageEnglish

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