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Epson TM-U220 Series Service Manual

Epson TM-U220 Series
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Rev. B Disassembly and Assembly 4-1
TM-U220 Type A Service Manual
Confidential
Chapter 4
Disassembly and Assembly
This chapter gives instructions to disassemble and assemble the product. Also, the text explains
maintenance and cleaning.
Lubricants
Lubrication is critical to retaining the printer at its initial performance level throughout its life, as
well as avoiding potential problems. Always lubricate at prescribed intervals, using the correct
lubricants.
Standard Lubrication
During disassembly and reassembly, clean the parts first, then lubricate them.
Lubricate or overhaul after every 7.5 million lines printed.
Lubricants
The types of lubricants used greatly affect the printer’s performance and durability, and a
lubricant’s low-temperature characteristics require special attention. EPSON has conducted
thorough analyses of the technical data and wide-ranging experimentation on different
lubricants. The EPSON selection of lubricants prescribed for use with the printer is based on the
results of such research. The prescribed EPSON lubricants are available in 40 cc (40 gr) metal
cans or plastic containers (the smallest unit of supply).
The three types of lubricants used with this printer are G-15, G-36, and O-13.
Lubrication Points
The table on the next page describes the lubrication points, types, and classes. Also see the
explanations contained in the diagrams in this chapter.
Tool List
Use the tools below for assembly, disassembly, and adjustment.
Items Parts code Note
Gap gauge 1080567 Size: 0.45 mm
1080568 Size: 0.55 mm
Tension gauge 1213123
E-ring holder 1074111 Size: 2.3
1080545 Size: 3
1080546 Size: 4

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Epson TM-U220 Series Specifications

General IconGeneral
Print Method9-pin, serial impact dot matrix
AutocutterPartial cut
WeightApprox. 2.5 kg
Paper Thickness0.06 to 0.085 mm
Operating Temperature5 to 45 °C
InterfaceRS-232, Bi-directional parallel, USB, Ethernet
Number of Columns42 columns
Data Buffer4 KB
Character Set95 Alphanumeric, 128 x 12 Graphic
Power SupplyAC adapter
Operating Humidity10% to 80% RH (non-condensing)
Print Speed4.7 lines per second (at 40 columns, 16 dpi)
Paper Width76 mm / 69.5 mm / 57.5 mm ± 0.5 mm
Copy CapabilityOriginal + 2 copies

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