General; Lubrication; Lubricants; Lubrication Standards - Epson MX-80 Technical Manual

4.1 General
In this chapter, the maintenance and adjustment proceaures for the MX-80 Dot Matrix Printer
are described in order to sustain the rated performance characteristics of the Printer for an
extended period.
4.2 Lubrication
Lubrication is an important factor in maintaining optimum performance of the M-321 0 Printer
Mechanism in the MX-80. Perform lubrication in accordance with the procedures outlined in
this section.
4.2.1 Lubricants
Performance and durability of the printer are greatly affected by the type of lubricant
employed. In particular, attention must be paid to the low temperature characteristic of each
lubricant to be used for the printer. The two kinds of lubricants listed in paragraph 4.2.2 have
been selected by Shinshu Seiki for exclusive use of the printer based on an extensive study
of the technical information on various kinds of lubricants, as well as on a number of tests
conducted by the compailY on such lubricants. For this reason, use of the lubricants desig-
nated by Shinshu Seiki is highly recommended.
Shinshu Seikl is prepared to supply the lubricants in a 40 gr. (or 40 cc) metal can or plastic
container as a minimum unit of issue.
4.2.2 Lubrication standards
The M-3210 Printer Mechanism employes two kinds of lubricants G-2 and 0-2. Before
lubricating the M-321 0 during its disassembly and assembly, be sure that all points requiring
lubrication are thoroughly cleaned, and then perform lubrication by referring to Table 4.1 or
Fig. 4.1 for the lube point and the lubricant to be used. (The lube point numbers shown in
Table 4.1 are identical to those shown in Fig. 4.1.)
Periodic lubrication of the printer mechanism must be performed in accordance with the
following classification.
A ... requiring lubrication every 6 months or after printing 1,000,000 lines.
B ... Point requiring lubrication upon overhaul or after printing 5,000,000 lines.
Note that lubrication is mondatory after parts replacement or unit disassembly has been per-
formed or when the lubricant is removed as a result of cleaning.
Table 4.1 List of Lube Points
No Lube point Lubricant used Lubrication standard
1 Carriage shafts A and B 0-2 A
2 Moving part of head lock lever G-2 B
3 Hook parts of head lock lever spring G-2 B
4
Sliding part of head adjusting lever G-2 B
5 Toothed part of belt driving pulley G-2 B
6
Gear teeth of timing belt motor assy G-2
B
7 Teeth of sprocket transmission gear G-2 B
8 Gear teeth of paper feeding motor assy G-2 B
9
Teeth of ribbon driving gear and ribbon G-2
B
driVing gear securing shaft
10 Teeth of planetary pinion, contact part G-2 B
between planetary pinion and leaf spring,
and planetary pinion securing shaft
11 Toothed part of planetary lever assy and G-2 B
planetary lever assy securing shaft
12 Contact part between belt driven pulley G-2 B
flange and plain washer
13 Teeth of sprocket gear G-2 B
4-1 REV. A