Vis Ual Inspection - Wang DW/OS-20 Maintenance Manual

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4.
Clean the printer. Remove paper
alcohol-saturated cleaning pads and
carriage rails and pulley grooves.
residue,
wipers.
ink, dust, etc.,
Check particularly
with
the
5. Clean the platen, platen pressure rollers, and paper bail rollers with
FreJron Platen Cleaner, or equivalent. Do not use alcohol on these
items.
6. Clean the hanuner actuator with a cloth or brush.
5.1.2 LUBRICATION
Lubricate the printer as follows:
DO NOT EXCEED THE RECOMMENDED AMOUNTS.
1. Carriage rail bearing: put 4 or 5 drops of #10 weight oil on either
side of the carriage, and move carriage back and forth.
2. Remove the two caps from the hanuner armature pivots, and apply IBM #23
grease on pivot pin. Do not oil the parts. To locate the lubrication
points, refer to figure 5-1.
5.1.3 VISUAL INSPECTION (figure 5-2)
Printing characteristics to check are:
1. Character Spacing: A row of uppercase "H"'s shows any spacing
problems present in the machine.
2. Print Consistency: Type a sentence such as "The quick brown fox ••• ",
which uses all the alphabet in a random order.
3. Condition of the Print Wheel (Worst Case): Check I, E, H, X
4. Evenness: Type a line of under-scores.
5. Line Spacing: Six line feeds equals one inch.
5-2
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