Wyse WY-60 Maintenance Manual page 133

Functional descriptions
(continued)
character and attribute
data RAM, 6-5
character row buffer data
latch, 6-5
chip select decoder, 6-4
clock divider, 6-4
clock generator, 6-3
code ROM, 6-4
communication interface, 6-10
CRT, 6-8
display memory, 6-11
dot clock oscillator, 6-5
dot stretcher, 6-3
flyback transformer, 6-8
font RAM, 6-5, 6-12
gate array, 6-3
horizontal driver, 6-6
keyboard interface, 6-5,
6-11
level converters (EIA to
TTL), 6-5
level converters (TTL to
EIA), 6-5
line filter, 6-6
low order address latch,
6-4
main switching power
transformer, 6-6
microcontroller, 6-9
MODEM port, 6-10
nonvolatile memory, 6-5,
6 -11
power supply voltage, 6-6
pre set table scan line
counter, 6-3
programmable video
controller, 6-12
programmable video timing,
6-4
pulse width modulator, 6-6
regulation circuitry, 6-6
row buffer RAM, 6-5
soft-font control, 6-3
UART, 6-4
UART clock, 6-6
vertical deflection
circui t, 6-8
video amplifier, 6-8
video clock circuits, 6-11
video controller, 6-11
video shift register, 6-3,
6-12
voltage doubler, 6-6
Fuse
domestic specifications,
A-1
international
specifications, A-l
removal/replacement, 2-10
G
Gate array, 6-3
Generator
blink rate, 6-3
character blink rate, 6-3
character clock, 6-3
cursor blink rate, 6-3
H
Height
adjustment, 4-11
checking with reticle, D-4
Horizontal
blanking, 6-13
driver, 6-6
font density, A-2
I
I/O, see Input/output
Input/output devices, 1-3
Installation
ke yboard, 1-5
terminal checklist, 3-12
Interfaces
asynchronous, 1-3
AUX, 1-3
communication, 6-10
keyboard, 6-5, 6-11
MODEM, 1- 3
primary, 1-3
RS-232C, 1-3
Isolating circuits, 3-15
K
Keyboard
316X-style assembly
drawing, 7-17
316X-style layout, 2-3
316X-style schematic, 7-7
AT-style assembly drawing,
7-16
AT-style layout, 2-3
AT-style schematic, 7-5
block diagram, 6-8
checking., 3-15
description, 1-3
dimensions, A-3
installation, 1-5
1-3