IBM PCjr Hardware Maintenance And Service page 100

Press the Enter key once.
1. White
2. Hi-intensity White
3. Biinking
4. Blank
5. Reverse image
DID THE CORRECT IMAGE APPEAR ON YOUR
SCREEN?
NO The system board is bad. Replace it.
YES
Repeat advanced POST and the advanced
tests to ensure that the IBM PCyr is operating
correctly.
4
3-500-12 Display