HP 9800 Handbook page 13

Test Summary
98750 Diagnostics
5-1
Chapter
5
Diagnostics
The CRT Tests are contained on the 9845B Test Binary Cartridge or the 9845A Test ROM. For
the 9845B, insert the cartridge, and enter:
LOADBIN "TBIN"
For the 9845A. install the Test ROM and turn power on.
Press kO for the CRT alpha tests or k5 for the CRT Graphics tests. Follow the instructions for
each test. as follows.
KO CRT Alpha Test
This test will check and exercise all the CRT alpha functions and provide test patterns for the
following CRT adjustments:
• Focus
• Alpha raster size
The adjustment procedures are found after this test procedure.
T a exit this test press ( STOP).
Press
CJLJ;
the CRT displays:
Press B For full buffer
H For He He
L For
Linearit~'
G Graphics
C For Character Set
o
For Optional Char. Set
F For Features