Chapter 3. 25-Line Display; 25-Line Display Operational Theory - IBM 6360 Product Support Manual

CHAPTER 3. 25-LINE DISPLAY
25-LINE DISPLAY OPERATIONAL
THEORY
The 25-Line Display Module is a Cath-
ode Ray Tube (CRT) with a 254 mm (10
inch) cable which terminates in a 15
pin connector. The display is a Field
Replaceable Unit (FRU) which requires
no maintenance (Figure 3-1).
DANGER
Do not remove the display covers.
Operating voltages up to 14,000 volts
are present inside the display. No
bleeder resistor is provided.
The 25-Line Display Module weighs 6.8
kg (15 pounds). The display screen
measures 305 mm (12 inches)
diagonally; 245 nun (9.6 inches) hor-
izontally; and 170 mm (6.7 inches)
vertically; and can display 25 lines
of information. The typing area of
the display screen available to the
operator is 136 mm (5.4 inches) high
and 245 mm (9.6 inches) wide. Up to
1600 characters in 20 lines of 80
characters each can be displayed in
this area. Five additional lines con-
tain control information.
Figure 3-1. 25-Line Display Module
The display module is installed on top
of the electronics module. The unit
can be tilted twenty degrees (20
0
)
and
may also be turned left or right
twelve degrees (12
0
)
from center
(Figure 3-2). The cable is attached
to the bottom of the display module to
prevent interference with the elec-
tronics module when tilting or turning
the display. .
) I
(Front View)
IBN
o
o
(Right Side View)
~
OJ
' - -
--~
- .,..- 1
1 - - -
(Top View)
Figure 3..;2. 25-Line Display Module
Installation and Movement
Two operator controls (contrast and
brightness) are on the front right
side of the display module
(Figure 3-3).
Chapter 3. 25-Line Display 3-1