Joystick 3-1300-1 - IBM PCjr Hardware Maintenance And Service

Joystick
You are entering this PIC because you suspect that an
attachable joystick is failing.
The attachable joystick test has two parts.
• The attachable joystick interface on the system
board is checked by using a wrap plug.
• The attachable joystick itself is checked using
customer-level tests.
The service plug is used as the attachable joystick wrap
plug.
1. Set the system unit's Power switch to Off.
2. Unplug aU attachable joysticks, if present, from the
system unit.
3. Be sure that the service plug is plugged securely into
the system unit connectors J.
CONTINUE
Joystick 3-1300-1