IBM PCjr - Page 376

12. Set your multimeter to the 12 Vdc scale.
13. Place the negative (-) lead of the meter on the
ground pin of the driver circuit card.
14. Place the positive
(+) lead of the meter on the
yellow wire solder connection on the left margin
sensor.
Negative (—) Lead to Ground
Pin on Driver Circuit Card
Driver Circuit Card
Frame
1-3/4 in.
4-1400-44 Graphics Printer
n n
Positive (+) Lead to
Yellow Wire Connection