Service manual

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EPSON LQ-300+ Revision C
Disassembly and Assembly Overview 54
4.1 Overview
This chapter explains the disassembly and assembly of LQ-300+.
4.1.1 Precautions
Read the precautions below before disassembling and assembling the printer.
4.1.2 Tools
The table below lists the tools recommended to use for disassembly and assembly and
adjustment. Use only tools specified here.
NOTE: All tools are available in market.
NOTE: Only component level repairing service requires oscilloscope.
W A R N I N G

Never touch the printer right after it finishes printing, for the
printhead is highly heated.

Disconnect the power cable before disassembling or assembling
the printer.

If you need to work on the printer with power applied, strictly
follow the instructions in this manual.

Always wear gloves for disassembly and reassembly to avoid
injury from sharp metal edges.

To protect sensitive microprocessors and circuitry, use static
discharge equipment, such as anti-static wrist straps, when
accessing internal components.
C A U T I O N

For disassembly and assembly of the printer, use the tools
specified in this chapter.

Use the specified oil and grease.

When performing the adjustment, follow the method described
in this manual.

Use only recommended tools for disassembling, assembling or
adjusting the printer.

Observe the specified torque when tightening screws.

Apply lubricants and adhesives as specified. (See Chapter 6 for
details.)

Make the specified adjustments when you disassemble the
printer.
(See Chapter 5 for details.)
Table 4-1. Recommended Tools-1
Tools Part No.
Needle-nose pliers B740400100
Nipper B740500100
Tweezers B741000100
Soldering bit B740200100
E ring holder #2.5 B740800400
+ driver No.2 B743800200
Box driver (opposite side distance: 7mm) B741700200
Thickness gauge B776702201
Table 4-2. Recommended Tools-2
Device Specification
Multimeter -
Oscilloscope 50MHz