DataMetrics 2000 Series, Руководство по эксплуатации и обслуживанию

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MODEL 2000 PRINTER OPERATION AND MAINTENANCE
DataMetrics Corporation 29
6. MAINTENANCE
6.1. Introduction
This chapter provides information and instructions concerning Model 2x00 printer tools and
test equipment, periodic maintenance, fault isolation, and the removal and installation of
replaceable components and subassemblies.
6.2. Tools and Test Equipment
The following tools and test equipment are required to maintain the printer:
• Common hand tools
• Digital multimeter
• Host computer with Centronics parallel interface
6.3. Periodic Maintenance
6.3.1. Cleaning and Lubrication
The recommended frequency for cleaning and lubrication is dependent on the usage profile
and installation environment. As a minimum, the following actions should be performed
whenever the ribbon cassette is replaced.
• Wipe the printer interior with a soft cloth and mild commercial cleaner. The platen
(Figure 6-1) should only be cleaned with denatured alcohol.
• Vacuum dust and paper particles from the chassis interior.
• Apply a small amount of very light oil to the carriage guide bar (Figure 6-1).
6.3.2. Ribbon Cassette Re-Inking
A black ribbon supports the printing of approximately 3 million characters in draft mode.
When the print image begins to fade, the ribbon can be re-inked. Re-inking is accomplished
by removing the cassette and gently pushing the ribbon counter spring (Figure 6-1) with a
ball-point pen or similar object. Reinstall the ribbon cassette and print a few test pages. If
image quality does return to normal after a few pages are printed, the ribbon cassette
should be replaced. The ribbon should not be re-inked unless the print image is fading.
6.4. Fault Isolation
If the printer exhibits an error condition or degraded performance, refer to the
troubleshooting information provided in Table 6-1.
6.5. Replaceable Components and Subassemblies
The following paragraphs include information concerning the replaceable components and
subassemblies identified in Table 1-2. Item locations are shown in Figures 6-2 and 6-3.