Epson TM-U220 Series Service Manual

Rev. B Disassembly and Assembly 4-9
TM-U220 Type A Service Manual
Confidential
DIsassembly Procedures
Reassembly
steps
Part names Assembly procedures
❶
Ribbon frame
assembly (519)
❏ Remove the ribbon frame spring (1022).
❏ Remove 1 E-ring 4 (E03), and remove the ribbon frame assembly
(519).
❏ After this, you can remove the print head unit (503).
6 Lubricate the carriage sub assembly (1025) with O-13.
❷
Carriage sub
assembly (1025)
Carriage belt (507)
Head FFC (521)
❏ Remove the right and left adjustment roller shaft holders (506).
❏ Pull out the carriage shaft (1027).
❏ Remove the head FFC (521) from the carriage sub assembly
(1025).
❏ Loosen 2 screws (S12, S14) securing the belt tension plate sub
assembly (1086).
❏ Remove the carriage belt (507), together with the carriage sub
assembly (1025).
❏ Remove the belt tension plate sub assembly (1086).
❏ Remove the head FFC (521).

Note for replacing the adjustment roller shaft holders (See page 4-22):
When you need to remove the adjustment roller shaft holders (506),
you must replace each holder with a new part. This is necessary
because the part changes when you remove it.
Note for attaching the carriage sub assembly (1025) (See page 4-24):
When you reassemble the carriage sub assembly (1025), you also
need to adjust the unit’s platen gap. (See page 5-5.)
Note for attaching the carriage belt (507) (See page 4-23):
When you reattach the carriage belt, adjust its tension. (See page 5-
6.)
Confirm the head FFC (521) is connected correctly. (See page 4-23.)
6 Lubricate the carriage sub assembly (1025) with O-13.
6 Lubricate the belt tension plate sub assembly (1086) with G-36.
❸
Carriage guide plate
(1030)
Carriage guide plate
sub assembly (1026)
❏ Remove 2 screws (S11), and remove the carriage guide plate
(1030).
❏ Remove the carriage guide plate sub assembly (1026).
6 Lubricate the carriage guide plate (1030) and the belt tension
plate sub assembly (1086) with G-36.
❹
Ribbon drive plate
sub assembly (517)
Ribbon middle gear
(512)
Ribbon take-up gear
sub assembly (516)
Belt drive pulley (505)
❏ Remove 1 E-ring 2.3 (E02), and remove the ribbon drive plate sub
assembly (517).
❏ Remove the ribbon middle gear (512).
❏ Remove the ribbon take-up gear sub assembly (516).
❏ Remove 1 E-ring 3 (E01), remove the belt drive pulley (505).
❺
Carriage motor sub
assembly (1034)
❏ Remove 2 screws (S09), and remove the carriage motor sub
assembly (1034).
❻
HP board assembly
(518)
❏ Remove 1 screw (S11), and remove the HP board assembly (518).
 When replacing the HP board assembly (518), you need to
remove the solder. Resolder when attaching the HP board
assembly (518). (See page 4-24.)
Base frame (1011) After this, you can remove the base frame (1011).
6 Lubricate the base frame (1011) with G-15 and G-36.

Epson TM-U220 Series Specifications

General

Print Method	9-pin, serial impact dot matrix
Autocutter	Partial cut
Weight	Approx. 2.5 kg
Paper Thickness	0.06 to 0.085 mm
Operating Temperature	5 to 45 °C
Interface	RS-232, Bi-directional parallel, USB, Ethernet
Number of Columns	42 columns
Data Buffer	4 KB
Character Set	95 Alphanumeric, 128 x 12 Graphic
Power Supply	AC adapter
Operating Humidity	10% to 80% RH (non-condensing)
Print Speed	4.7 lines per second (at 40 columns, 16 dpi)
Paper Width	76 mm / 69.5 mm / 57.5 mm ± 0.5 mm
Copy Capability	Original + 2 copies