Does The Terminal Meet The Display Specifications - Wyse WY-30 Maintenance Manual

Note--If
you can't bring the +5V supply into tolerance, see
Chapter 3, "Troubleshooting."
8. Check the -12V supply at C31 on the terminal PCB. The
digital voltmeter shou'ld read -12V (+5 percent). If the
-12V supply is not within tolerance after you have adjusted
the +5 supply, see Chapter 3, "Troubleshooting."
9. Check the +12V supply at C27 on the terminal PCB. The
digital voltmeter should read +12V (+5 percent). If the
+12V supply is not within tolerance after you have adjusted
the +5 supply, see Chapter 3, "Troubleshooting."
10. Turn the terminal so the screen is visible. Set the
terminal PCB on a surface where the traces will not touch
other metal.
11. Check to see if the display needs alignment. (See "Does
the Terminal Meet the Display Specifications?") If it
doesn't need alignment, turn off the terminal, unplug it,
and replace the top cover.
If the display needs alignment, go to "Aligning the Terminal
Display."
DOES THE TERMINAL MEET THE DISPLAY SPECIFICATIONS?
Before you adjust the display on the monitor, measure the screen
margins and study the display, following the procedure below.
Note--If
you have just finished checking and adjusting the power
supplies, go to step 4.
1. Turn the terminal off.
2. Unplug the power cord from the back of the terminal.
3. If any communications cables are attached to the back of the
terminal, detach them.
4. Attach the test connectors to the MODEM and AUX ports on the
rear pane
1.
Note--See
Appendix C for a description of these connectors
and instructions for making them. See Chapter 5 for
ordering information.
5. Plug in the power cord and turn the terminal on. Let it run
for 30 minutes.
Note--If
you check the display before it runs for 30
minutes, your measurements may not be accurate.
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