DEC VT420 Service Manual page 77

A
ADP parts, 59, 60
B
Bell tone problems
does not turn off, 6
no bell tone, 6
C
Cables, 54 to 56
Centering adjustment, 50
Character sets, 2
Communication problems, 6
reverse question marks, 9
Copy and paste problems, 9
CRT disposal, 38
CRT/yoke/bezel assembly removal,
26
D
DEC-423 port loopback test, 14
Documentation, 57
E
Error characters
Reverse question marks, 9
Error messages, 20 to 21
key, 9, 11
Esc
Escape (ESC) characters, 11
F
(ESC) key, 9, 12
F11
Focus adjustment, 50
H
Horizontal width adjustment, 49
K
Keyboard LED problems
LEDs stay on, 9
Keyboard models, 61 to 62
Keyboard removal, 36
Kodak parts, 59
L
Local mode, selecting, 11
Loopback connectors, 15
Loopback tests
printer port, 18
RS-232 port control lines, 17
RS-232 port data lines, 16
M
Modems
Modem speed problems, 10
part numbers, 54
Monitor adjustments, 45 to 50
centering, 50
controls, 45
Index
Index 1