Wyse WY-60 Maintenance Manual page 135

Power supply
+12 volt, 6-8
+5 volt, 6-6
-12 vol t, 6-8
component layout, 4-8
voltage check, 3-14
voltage functional
description, 6-6
Presettable scan line
counter, 6-3
Programmable video
controller, 6-12
Programmable video timing,
6-4
Pulse width modulator, 6-6
Q
Quick reference guide for
troubleshooting, 3-4
R
RAM
character and attrubute,
6-5
font, 6-5
row buffer, 6-5
Register, video shift, 6-3,
6-12
Regulation circuitry, 6-6
Remov ing
ASCII keyboard cable, 2-5
ASCII keyboard PCB, 2-6
assemblies in the terminal
mod ule, 2-9
CRT/yoke assembly, 2-13
terminal enclosure, 2-9
terminal PCB, 2-11
WY-60 ASCII keyboard, 2-4
yoke, 2-15
Replacing
CRT/yoke assembly, 2-14
fuse, 2-10
terminal enclosure, 2-16
terminal PCB, 2-13
yoke, 2-16
Required tools
al ignmen t, 4-2
removal and replacement,
2-3
Requirements
operating, A-1
power, A-1
Resolution, A-1
Reticle
checking ceutering, D-5
checking height, D-4
checking linearity, D-5
checking pincushioning,
D-4
checking straightness, D-4
checking width, D-3
Retrace time, A-1
Row buffer RAM, 6-5
S
Safety warnings, 2-2, 3-1,
4-2
Scan frequency, A-1
Scan line
definition, 6-13
presettable counter, 6-3
Schematics
316X-style keyboard, 7-7
AT-style keyboard, 7-5
terminal PCB (logic), 7-9,
7 -11
terminal PCB (monitor and
power supply), 7-13
WY-60 ASCII keyboard, 7-3
Screen dimensions, A-3
Sel f-tests
back-to-back diagnostic,
3-4
diagnostic, 3-3
power-on, 3-3
Setup parameters, 1-5
Shipping weight, A-3
Soft-font control, 6-3
Spare parts, 5-1
Speci fica tions
display, 4-2
display margins, 4-4
terminal, A-1
Straightness check, D-4
T
Terminal
adjustments, 4-1
clean ing, 1-6
control, 1-3
description, 1-2
dimensions, A-3
display assembly list, 5-3
installation checklist,
3-12
preparation for reticle
proc ed ure, D-2
specifications, A-1
I
-5