Epson LQ-870 Service Manual page 66

3.1 OVERVIEW
This section describes disassembly precautions, tools, service checks after repair, and screw
specifications.
3.1.1 Disassembly Precautions
Follow the precautions below when disassembling the printer.
Before disassembling, assembling, or adjusting the printer, disconnect the power cord from the
external AC power socket. Failure to do so risks personal injury. The printer's power switch is wired
into the primary circuitry. As a result, the printer still remains live with current flowing even when
For efficient printer operation, use only the recommended tools for maintenance work.
Adjust the printer only as described in this manual.
3.1.2 Tools
Tables 3-l and 3-2 list the tools you need when disassembling, assembling, or adjusting the printer.
Use only tools that meet these specifications.
NOTE
All tools are commercially available.
Table 3-1. Recommended Tools
Tool
Round-nose pliers
Nippers
Tweezers
Soldering iron
E-ring holder # 2.5 (Note 2)
E-ring holder # 5
E-ring holder # 6
Phillips screwdriver No. 2
Normal screwdriver
Box driver (7 mm across)
Thickness gauge (0.36 mm)
Thickness gauge (0.40 mm)
Table 3-2. Equipment Required for Maintenance
Part No.
B740400100
B740500100
B741000100
B740200100
B740800400
B740800700
B740800800
B743800200
B743000100
B741700200
3-1
REV.-A