General; Tools And Measuring Instruments - Epson MX-80 Technical Manual

3.1 General
This chapter describes the method of disassembling the EPSON MX-80 Dot Matrix Printer for
replacement of major components, and the procedures for troubleshooting the Printer.
The troubleshooting procedures are divided into two parts: one related to the mechanism
block of the MX-80 and the other related to the electric circuit block of the MX-80. In each
part, a troubleshooting method is provided for each symptom of abnormality.
3.2 Tools and Measuring Instruments
The tools and measuring instruments contained in Tables 3.1 and 3.2 of this section must be
prepared by the user prior to disassembling and troubleshooting the MX-80. Under the col
umn "Class" in both tables, code "A" denotes the tool or measuring instrument mandatory for
maintenance and repair of the Printer, whereas code "B denotes the tool or measuring
instrument not necessarily essential but recommended to facilitate such maintenance and
repair.
3-1 REV. A