Module Level Troubleshooting Quick; Troubleshooting Flowchart - Wyse WY-60 Maintenance Manual

Table 3-1 Module-Level Troubleshooting Quick Rererence Guide
Symptom Possible Problem Area(s)
No display Terminal PCB, CRT/yoke assembly
Poor display quality
Wrong size display
Crooked
Too bright
Not in foc us
F3.ils self-test
F3.ils diagnostic test
Inoperative keys
Can't communicate
with computer
Letters or error
codes on the screen
Adjustments, terminal PCB
Adjustments, terminal PCB, yoke
Terminal PCB
Terminal PCB, wrong diagnostic setup,
faulty test connectors
Keyboard, terminal PCB, keyboard cable
Setup parameters, terminal PCB,
communication cable
Terminal PCB
TROUBLESHOOTING FLOWCHART
Read the troubleshooting flowchart and match the symptoms with
the suggested solutions. Use the schematics and assembly
drawings in Chapter 7 to help you interpret this flowchart.
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