Service manual

SERVICE MANUAL MASTER FILE
ENGLISH
Rev. A (1997/05/07)
4-1
.1 OVERVIEW
This section describes various points to note when disassembling and assembling the printer.
Unless otherwise specified, disassembled units or components can be re-assembled by reversing
the disassembly procedure. Therefore, no assembly procedures are included in this section.
Precautions for any disassembly or assembly procedure are described under the heading
«
CHECK POINT
». Any adjustments required after disassembling the units are described under the
heading «
ADJUSTEMNTS
».
.1.1 Disassembly Precautions
Follow the precautions below when disassembling the printer.
WARNING
Before disassembling, assembling or adjusting the printer,
disconnect the power supply cable from the AC power socket. Failure
to do cause personal injury.
Be careful with the printhead when you handle it, as it may be very
hot just after printing.
Do not touch the heat sink attached to the switching FET (Q1) on the
power supply board, just after power off as it may be very hot.
Never touch the heat sink attaches to the switching FET (Q1) while at
AC power cable is connected to the AC outlet, as it is not electrically
isolated.
CAUTION
To maintain efficient printer operation:
Use only the recommended tools for maintenance work.
Use only the recommended lubrications and adhesives (See Chapter
6.)
Adjust the printer only in the manner described in this manual.
.1.2 Tools and Instruments
The table below lists the tools and the instruments required for disassembling, assembling or
adjusting the printer. Use only tools that meets these specifications.
Table 4-1 . Tool and Instrument List
Name Specification EPSON Part No.
Phillips Screwdriver No.2 B743800200
Phillips Screwdriver No.1 B743800100
Box Driver 7.0mm Diagonal B741700200
Tweezers

B741000100
Round-nose pliers

B740400100
Thickness gage

B776702201
Soldering iron

B740200100
E-Ring holder Size: #6 B740800800
Multi-Meter OHM/Voltage/Current

Oscilloscope Min. 50MHz

Note) All tools and instruments listed above are commercially available.