IBM PCjr

1. Disconnect CNP from the logic card.
2. Plug the printer's power cord into a properly
grounded outlet.
3. Set the printer's Power switch to On.
DANGER
LINE VOLTAGE IS PRESENT ON THE
POWER SUPPLY CARD AND
TRANSFORMER ASSEMBLY.
4. The voltages on the CNP connector should be
within the ranges listed below.
5. Measure these voltages now.
CNP rrm
Pin 1 to Pin 2
Pin 3 to Pin 4
Low Vac High Vac
WERE YOU ABLE TO READ THE CORRECT
VOLTAGES?
NO The IBM PC Compact Printer is bad. Replace it.
3-850-10 Compact Printer