Handling, Maintenance, and Repair 2-9
Standard
Check item
No.
Check for dust, fluff, paper lint, etc. ad-
1
hering or trapped inside the printer.
· Must be free of noticeable amount of dust, fluff, paper lint, etc.
Likewise, there must be no other foreign matter. (Especially
around the detector)
· Peper fragments must not remain in the paper guides.
· Must not be deformed.
Shape of springs
2
· Must not be chipped, worn out, or damaged.
Shape of gears
3
· See “2.4 LUBRICATION”.
Lubrication
4
· Must be free of trouble.
Printing operation
5
· Paper feeding must be free of trouble.
· Ribbon feeding must be free of trouble.
· There must be no strange noise during printing.
· Observe the functions and check for any abnormal operation
due to worn or bent parts, paper jams, etc.
· Make sure that the ribbon being used satisfies the requirements
State of ink ribbon
6
of specification.
· The ribbon and ribbon cassette must be free of damage.
Model M190G Technical Manual
Periodic check
Every six months, periodic maintenance and inspection of the points below should be
conducted.
Table 2.1 Periodic Check
2.3 REPAIR
Repairs are classified into two levels (A and B) in consideration of the degree of difficulty of
repairs. Thus, the person in charge of repair must decide the method of repairing depending on
the knowledge and skill of the technician.
2.3.1. Repair Levels
Level A:
Requires general knowledge of the printer's operation principles and structure but
does not require specialized experience.
Level B:
Requires a certain degree of knowledge of the printer's operating principles and
structure as well as skills and experience using special tools for disassembly and
reassembly of the printer.
2.3.2 Repairing Procedure
When problems occur, locate the cause of the problem and the condition of the printer as
outlined in Section 2.3.3 "Guidelines for Repair" and repair the unit properly.
