Required Items For Diagnostics - IBM PCjr Hardware Maintenance And Service

Required Items for Diagnostics
In order to perform all of the advanced diagnostics, you
must have:
A system unit
A keyboard
A known good television receiver
A service plug, part number 1503441
A POST-loop plug, part number 1503442
A parallel printer attachment wrap plug, part
number 8529228
A serial wrap plug, part number 1503443
A Triplett Model 310 Multimeter (or equivalent)
Access to a set of known good replacement parts
2-3