Adjustments And Alignments; Checking Display Specifications; Centering Rings; Display Magnets - Wyse WY-60 Maintenance Manual

4
ADJUSTMENTS AND ALIGNMENTS
Before you Start 4-1
Sa fety Summ ary 4-2
Required Tools 4-2
Checking Display Specifications 4-2
Aligning the Terminal Display 4-5
Adjusting the Terminal Display 4-10
Vertical Hold 4-10
Height 4-11
Width 4-11
Yoke Lock 4-11
Centering Rings 4-11
Display Magnets 4-13
Brightness 4-14
Foc us 4 -14
Linearity 4-15
Test Patterns 4-15
Pattern M 4-15
Pattern 0 4-16
BEFORE YOU START
This chapter describes 3.djustments and align!nents for the
terminal. In particular, it discusses voltage adjustments, full
monitor alignment, and individual adjustments. Before you align
the monitor, check to see if the display meets the specific3.tion.
If it doesn't, follow the set of instructions in the alignment
section. You should complete a full terminal alignment whenever
you replace the terminal printed circuit board (PCB) or the
cathode ray tube (CRT)/yoke assembly.
WARNING--The CRT/yoke assembly has high voltages. Only qualified
service personnel should adjust it.
4-1