IBM PCjr Hardware Maintenance And Service

Pin A2
P n A2
The voltage between the inside and outside of the
phono-jack at connector V should be between 0.9 and
1.1 Vdc. The voltages at connector D should be within
the ranges Usted below.
10. Measure these voltages now.
Pin A4
Pin A5
Pin A6
Pin A7
Pin B1
Pin B3
Low Vdc High Vdc
1 23456789
WERE YOU ABLE TO READ THE CORRECT
VOLTAGES?
The system board is bad. Replace it.
Repeat advanced POST and the advanced
tests to ensure that the IBM VCjr is operating
correctly.
Display 3-500-41

IBM PCjr Specifications

General

Brand	IBM
Model	PCjr
Category	Desktop
Language	English