IBM PCjr

1. Set the system unit's Power switch to Off.
2. Disconnect the diskette-drive signal cable from the
diskette-drive adapter and the diskette drive.
3. Check the continuity of the diskette-drive signal
cable.
0/
IS THE CABLE OK?
The Pins Labeled 1 Should
Have Continuity Between
Themselves, as Should the
Pins Labeled 2, and so on.
The diskette-drive signal cable is bad. Replace
it.
Repeat advanced POST and the advanced
tests to ensure that the IBM PCyr is operating
correctly.
Diskette Drive 3-600-21