IBM PCjr Hardware Maintenance And Service page 29

The following chart explains what the symbols on the
advanced-test menu represent. An asterick (*) after a
description means the sjmibol appears only when the
option is attached to the system unit.
0
1
\ /
\ /
/
£1
— >
< —
IZZI
E
RS232
Diskette-drive test
Display and light pen test
Joystick test
Sound test
Graphics printer test
Internal modem test
Compact printer test*
Serial port test
Keyboard test
2-11