Service manual

REV.-A
,
3.1 Overview
This section describes the information you need to know before you disassemble or assemble the printer.
3.1.1 Precautions
Follow the precautions below before you disassemble or assemble the printer.
WARNING
Before disassembling, assembling, or adjusting the printer, disconnect the power supply cable from
the AC power outlet. Failure to do so may cause physical injury. The power switch is wired in the
secondary circuitry. Therefore, the printer’s primary circuitry remains live even after the power switch
is turned off.
CAUTION
7
To maintain optimum printer operation, use only the recommended tools for maintenance work.
Also only the lubricants recommended in Chapter 6. Adjust the printer only as described in this
manual. (See Chapter
4.)
3.1.2 Tools
Tables 3-1 and 3-2 list the recommended tools needed to disassemble, assemble, or adjust the printer. Use
only tools that meet these specifications.
Table 3-1. Recommended Tools
Tool
Part No.
Round-nose pliers
B7404OO1OO
Nippers
B7405OO1OO
Tweezers
B741OOO1OO
Soldering iron
B7402OO1OO
E-ring holder #2.5
B740800400
Phillips screwdriver no.2
B743800200
Normal screwdriver
B743OOO1OO
Thickness gauge
Note: All the tools in the table above are commercially available.
Table 3-2. Equipment Required for Maintenance
Description Specification
Multimeter
Oscilloscope 20 MHz
3-1