Printer Mechanism Unit Assembly; Component Parts - Epson TM-U375 Technical Manual

CONFIDENTIAL
5.3 PRINTER MECHANISM
UNIT ASSEMBLY
The assembly process is divided into sub-assembly and
main assembly.
Perform the sub-assembly first to construct each unit from
the component parts. Then proceed to the main assembly.
When assembling the printer, check each part and its
attachment position by referring to Section 6.3, Overall
Exploded Diagrams .
A circled number in the Assembly Step column indicates
lubrication. Lubricants should be applied when assembling
the parts, since it is difficult to do so afterwards. Perform
lubrication by referring to Section 3.2.3, Lubrication, and to
Section 6.4, General Lubrication Points Diagrams .
A star ( ) in the Assembly Step column indicates that
checking (<Checkpoint>) or adjustment (<Adjustment>) is
required. For adjustments, follow the descriptions in Sec-
tion 5.3.4, Adjustments . Whenever disassembly is per-
formed even for just one part, check whether adjustment is
necessary before reassembly.
An assembly step and part name enclosed in a parenthesis
indicate a part previously assembled or previously used
part that is being carried over into another assembly.

5.3.1 Component Parts

Component parts in each assembly are shown in the
following. Small parts such as screws are omitted.
FFC guide assembly
Sub-assembly A
Relay circuit board assembly
Sub-assembly B
Carriage assembly
Sub-assembly C
Paper holding lever assembly
Sub-assembly D
FFC-Print head
Guide-FFC
Relay circuit board sub-
assembly
Carriage sensor sub-
assembly
Home position sensor
sub-assembly
Carriage sub-assembly
Belt
Paper holding lever
Magnetic field block plate
Spring pin
S holding roller shaft
sub-assembly
Guide frame assembly B
Sub-assembly E
V sensor assembly
Sub-assembly F
Platen holder unit
Sub-assembly G
Ribbon frame assembly B
Sub-assembly H
J holding roller shaft
J holding roller
Guide frame sub-assembly
Spring-J holding roller
V sensor sub-assembly
Sensor holder
Platen
V movable lever spring
Plate-Platen mounting
Platen holder
Cover-Platen holder
Platen adjustment roller
Platen adjustment roller
holder
V movable lever
J feed roller shaft assembly
Frame-Ribbon
Microswitch sub-assembly
V holding roller shaft
Roller-Holding (small)
Roller-Holding (large)
Lever-J insertion
Spring-J insertion lever B
Guide-Slip paper
Lever-Ribbon frame
Spring-Ribbon frame
(Lead wires)
5-5