Print Wheel Home Position Check; Print Wheel Home Position Adjustment - Wang DW/OS-20 Maintenance Manual

•
5.2.1.1.7 Print Wheel Home Position Check
NOTE
See Diagnostics, Chapter 8 (Printer - Mechan-
ical Test) for alternate method of checking
print wheel home position. The diagnostic
test is preferred for accurate alignment.
1. Turn power ON
2. Load syste~ diAk.
3. Remove ribbon.
4. Select printer.
5. Pull carriage assembly back.
3305
6. Check to see if the print wheel home position (lower case letter o)
is in normal position in line with the hammer as shown in figure
5-11. If not in alignment, note how far off the lower case o is from
normal position.
7. Perform the home position character adjustment below.
• 5.2.1.1.8 Print Wheel Home Position Adjustment
•
If the home character position is out of adjustment, adjust photo sensor
with the steps below.
1. De-select printer.
2. Pull carriage assembly back to service position.
3. Remove print wheel.
4. Loosen 2 mounting nuts (see figure 5-12).
5. Move sensor to right if lower case o is to the left of home position
and vice versa. Tighten nuts.
6. Put print wheel on.
CAUTION
Never leave carriage in service
position when selecting printer.
7. Select printer •
8.
Pull carriage assembly back.
9. Observe home position alignment.
5-15