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Chapter 3
INSTRUMENT MAINTENANCE
The calculator can Le cleanell
U'i
usil~£
a suft, flwi$, cloth. The use uf abrasive or harsh
detergents should be avoided, and moisture should not be allowed to penetrate into the
calculator. Avoid scratching the display \lvindow.
The printer requires that some periodic maintenance be performed to avoid printer failures. The
manufacturer recommends that these procedures be performed after 10 rolls of paper or every
3 months, whichever occurs first.
Table
3-1.
Equipment Required for P.M.'s
DESCRIPTION
* sti ff bristle brush
flexible bristle brush (·hp· PIN 8520-0015)
soft cloth
1. Advance the paper about 6". Tear off and save the 6" strip of printer paper.
2.
Lift the printer cover up and remove the paper tear bar and print-drum cover (see
Figure
3-1)
by pulling each device up until.it releases.
Figure 3 -1. The Tear Bar and Print-Drum Cover
*One of the brushes in the service kit can be trimmed to a %" length for this purpose, or a standard
typewriter brush can be used.
•
•
GENERAL
INFORMATION
PRINTER
MAINTENANCE
3-1
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