HP 9800 - Page 14

5-2 98750 Diagnostics
Press CD ; the CRT displays:
A failure
on ths display indicates a probable A 73 assembly failure.
Press o=J ; the CRT displays:
Usc th:s patte!'n to adjust the focus:ng adjustment (desc!':bed after th:s test) unt:! the "H"
characters are sharp and clear. The focus control is on the A 75 assembly.