Specifications

SQ: 1-19
RS3: Service Quick Reference Guide
Troubleshooting
Console Off Line Diagnostic Menu Definitions (continued)
Item DefinitionTest
Printer
Interface
(cont.)
7. Printer Port Loopback Test This initiates a test of the c ircuitry
to drive the printer. Before
starting the test the Printer
Interface card must be removed
and jumpers HD 7, HD 8, and HD
9 must be moved to the test
position and jumpers HD 1
through 6 should be removed.
NOTE: All tests except the
Printer Barber Pole test can be
run with the jumpers in this
position.
8. Printer Barber Pole This test outputs a barber pole
printer pattern for testing the
printer. The printer must be set
up for 9600 baud.
Video
Generator
9. Color Palette RAM Test This tests the color palette.
10. Video RAM Test 16 pages can be written into the
Video RAM. During the test,
patterns are written to each page
of the Video RAM.
11. Video Convergence Pattern This generates a test pattern to
enable checking the CRT for
alignment and linearity. No test
results are given.
12. Alarm Contacts Test Tests the alarm contacts.
Keyboard
Assemblies
13. Command Entry Keyboard
Test
This test allows for the testing the
Main Operator Keyboard Keys.
All keys are pictured on the
screen and each key picture will
light when the corresponding key
is pushed.
14. TTY/ASCII Keyboard Test This test allows for the testing
part of the individual TTY keys.
All keys are pictured on the
screen and each key picture will
light when the corresponding key
is pushed.
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