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IBM PCjr Hardware Maintenance And Service

IBM PCjr
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4.
Set
the
system
unit's
Power
switch
to
On.
5. Bring the advanced-test menu to your screen.
6.
Move
the
cursor
to
the
ID
"I"
under
the
RS232.
7.
Press
the
Enter
key.
The
test takes approximately four minutes to complete.
DO
YOU
HAVE
" * "
UNDER
THE
RS232?
3-840-2
RS232
The
system
board
is
bad.
Replace
it.
Repeat
advanced
POST
and
the
advanced
tests to
ensure
that
the
IBM
PC;> is operating
correctly.

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IBM PCjr Specifications

General IconGeneral
BrandIBM
ModelPCjr
CategoryDesktop
LanguageEnglish

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