IBM PCjr Hardware Maintenance And Service page 134

Warning: THE DISKETTE-DRIVE TEST
WILL ERASE ALL DATA ON THE
DISKETTE.
3. Type the code word MPNP.
4. Press the Enter key.
The advanced test is over when the advanced-test menu
returns to your screen.
• 4-875
/IN / |
DO YOU HAVE " * " UNDER THE
DISKETTE-DRIVE SYMBOL?
YES Go to page 3-600-24.
3-600-4 Diskette Drive