Preventive Maintenance; Lubrication And Adhesive Application - Epson LQ-2550 Technical Manual

6.1 PREVENTIVE MAINTENANCE

Proper maintenance is essential to maintain optimal printer performance for the longest possibly period
and to minimize malfunction frequency. Preventive maintenance includes regular cleaning of the case
exterior, using neutral detergent, and occasional vacuuming of the mechanism interior to remove dust
and paper particles.
Following cleaning, refer to Section 6.2 to verify that the unit is adequately lubricated. Before returning
the serviced printer to the consumer, inspect the springs, paper feed rollers, and the basic operationof
the unit.
Disconnect the printer from the power supply before performing maintenance. Do not use thinner,

LUBRICATION AND ADHESIVE APPLICATION

6.2
EPSON recommends that the points illustrated in Figures 6-2, 6-3, and 6-4 be lubricated, according
to the schedule listed in Table 6-2, with EPSON O-2, G-2 and G-27, which have been extensively tested
and found to comply with needs of this priter. (Refer to Table 6-1 for details of O-2, G-2 and G-27.) Be
sure that the parts to be lubricated are clean before applying lubricant, and avoid excessive application,
which may damage related parts.
Adhesive application is necessary at the point indicated in Table 6-3 when the part is disassembled
or replaced. EPSON recommends Neji Lock #2 (G) adhesive be applied to the point diagramed in
Figure 6-3. Avoid overflow of excess to related parts.
Classification
Oil
Grease
Grease
—
Adhesive
Ref. No.
(1)
Oil pad inside of carriage
(2) Gear portion of platen gear
Contact portion of dowel on release trigger plate and right frame
(4)
Gear portion of release planetary gear
(5)X Four convex portion of release sun gear
(6) Gear portion of tractor transmission gear
(7)
Outer gear portion of paper feed reduction gear
Contact portion of paper release support lever and paper release lever
(9)
Outer and inner gear portions of loading gear
(1 o)
Outer and inner gear portions of loading gear assembly
Table 6-1. Lubricants and Adhesive
Designation
o-2
G-2
G-27
Table 6-2. Lubrication Points
(Refer to Figures 6-2, 6-3, and 6-4.)
Lubrication Points
W A R N I N G
Capacity Availability
40 cc
40 g
40 g
1000 g
A
6-1
Part No.
B7 10200001
B70020001 1
B702700001
B 7 3 0 2 0 0 2 0 0
product
Lubricant
o-2 "
G-27
G-2
G-27
G-27
G-27
G-27
G-27
G-27
G-27