Epson Mt532 Manual

							6-18   Assembly and Disassembly Rev. A
Confidential
Main Assembly C
Reassembly
stepPart name Assembly procedure
H

o
 Hook the longer edge of the 
spring, lever, platen into the groove on the 
lever, platen. 
o
 Make sure not to deform the 
spring, lever, platen.
7
R.E. (2)´ 1o
 Install the 
lever, platen to the 
shaft, frame, platen, and secure it with an 
R.E..
H
HH H

o
 Make sure that the 
shaft, lock lever is placed properly into the specified 
position on the 
lever, platen.
8o
 Remove the longer edge of the 
spring, lever, platen, and hook it on the 
shaft, lock lever. 
groove 
longer edge
shaft, frame, platen
lever, platen
R.E. (2)
shaft, lock lever
shaft, lock lever
lever, platen
longer edge of the spring, 
lever platen
shaft, lock lever 
						

							Rev. A Assembly and Disassembly   6-19 EU-T532/T542 Technical Manual
Confidential
Main Assembly D Installation of the Thermal print head assembly
Reassembly
stepPart name Assembly procedure
1
Thermal print head 
assemblyo
 Install the 
thermal print head assembly in the grooves on the 
frame 
assembly.
H

o
 When handling the 
thermal print head assembly, use proper body 
grounding procedures to avoid static electricity.
(Use a conductive mat and wrist band during assembly.)
o
 Do not touch the connector terminals and the surface of the 
thermal print 
head assembly. If foreign matter attaches to them, wipe off the foreign 
matter lightly, using a cotton swab dampened with alcohol.
thermal print head assembly
frame assembly 
						

							6-20   Assembly and Disassembly Rev. A
Confidential
Main Assembly E Installation of the Plate, pressure spring
Reassembly
stepPart name Assembly procedure
1
Plate, pressure spring
2
Circuit board assembly
C.B.S-tite (M2.5 ´ 
 ´  ´   ´ 
4)´ 1o
 Install the 
circuit board to the 
plate, pressure spring, and secure it with 
screws.
H

o
 Tightening torque: 588 to 637 mN·m {6 to 6.5 kg·cm}
3
Spring, press head´ 2o
 Install the 
spring, press head to the 
plate, pressure spring.
H

o
 Make sure that the 
spring, press head is pushed securely into the 
plate, 
pressure spring.
4o
 Hook the edge of the 
spring, press head to the groove of the 
thermal print 
head assembly while pushing the 
plate, pressure spring in the arrow 
direction; then hook it to the groove of the 
frame assembly.
plate, pressure spring
C.B.S-tite (M2.5 ´ 4)
circuit board 
assembly
spring, press head
plate, pressure spring
groove of the thermal 
print head assembly
spring, press head
groove of the frame assembly
groove of the 
frame assembly 
						

							Rev. A Assembly and Disassembly   6-21 EU-T532/T542 Technical Manual
Confidential
Main Assembly E
Reassembly
stepPart name Assembly procedure
H

o
 Make sure that the lead wires, such as those for the 
paper detector 
assembly are not caught on anything when installing the 
spring, press 
head.
o
 Make sure that the lead wires of the
 paper detector assembly and the 
paper detector assembly are passed under the 
plate, pressure spring. 
o
 Make sure that the edge of the 
spring, press head fits securely into the 
groove on the
 thermal print head assembly.
o
 Make sure that the 
plate, pressure spring is hooked securely into the hole 
on the 
frame assembly.
lead wires
plate, pressure spring
spring, press head
thermal print head 
assembly
plate, pressure spring
frame assembly 
						

							6-22   Assembly and Disassembly Rev. A
Confidential
Main Assembly F Installation of the Fixing plate, the Gear, reduction and 
the Gear, idler
Reassembly
stepPart name Assembly procedure
1
Fixing plate
C.B.S-tite (M3 ´ 
 ´  ´   ´ 
5)´ 1o
 Install the 
fixing plate to the 
frame assembly, and secure it with the screw 
while pushing the edge of the 
fixing plate to the 
bearing, platen.  
H

o
 Tightening torque: 686 to 882 mN·m {7 to 9 kg·cm}
o
 Make sure that the edge of the 
fixing plate is pushed securely to the 
bearing, platen.
2
Gear, reduction
3
Gear, idler
R.E. (2.5)´ 2o
 Install the 
gear, reduction and the 
gear, idler to the shafts on the 
frame 
assembly, and secure them with 
R.E.s.
H

o
 Make sure not to deform the shaft on the 
frame assembly when securing 
with the 
R.E.
C.B.S-tite (M3 ´ 5)
bearing, platen
fixing plate
frame assembly
R.E. (2.5)
gear, reduction
gear, idler 
frame assembly
shafts 
						

							Rev. A Assembly and Disassembly   6-23 EU-T532/T542 Technical Manual
Confidential
Main Assembly G Installation of the Cover, gear
Reassembly
stepPart name Assembly procedure
1
C.B.S-tite (M3 ´ 
 ´  ´   ´ 
5)´ 1o
 Loosen a screw on the gear side.
2
Cover, gear´ 1o
 Hook th
e cover, gear to the edge of the 
shaft, frame, platen, the frame, 
and the 
C.B.S-tite (M3 ´ 
´ ´  ´ 
5); then attach it to the side of the printer.
3o
 Tighten the 
C.B.S-tite (M3 ´ 
´ ´  ´ 
5) again.
Ò

 Tightening torque: 686 to 882 mN·m {7 to 9 kg·cm}
C.B.S-tite (M3 ´ 5)
C.B.S-tite (M3 ´ 5)
shaft, frame, 
platen
cover, gear 
						

							6-24   Assembly and Disassembly Rev. A
Confidential
Main Assembly H Installation of the Cutter unit
Reassembly
stepPart name Assembly procedure
1
Cutter unit
C.B.S-tite (M3 ´ 
 ´  ´   ´ 
5)´ 2o
 Install the 
cutter unit to the 
frame assembly and secure it with screws, 
while the 
lead wire, paper cutter is passed through the hook on the 
frame 
assembly.
H

o
 Tightening torque: 686 to 882 mN·m {7 to 9 kg·cm}
o
 Make sure that the 
lead wire, paper cutter is passed through the hook on 
the
 frame assembly properly as shown above.
o
 Make sure that the 
lead wire, paper cutter is not caught between any 
places when securing the 
cutter unit.
o
 Install the 
cutter unit in the platen-up state.   
­o
 Lubricate the point where the 
fixed blade, H of the cutter unit contacts 
the 
cutter frame with G-15. 
C.B.S-tite (M3 ´ 5)
frame assembly
lead wire, paper cutter 
cutter unit 
platen
cutter unit
G-15
G-15 
						

							Rev. A Assembly and Disassembly   6-25 EU-T532/T542 Technical Manual
Confidential
Assembly I Arranging the lead wires
Reassembly
stepPart name Assembly procedure
1o
 Insert the lead wire connectors to the connectors on the 
circuit board.
H

o
 Make sure that the connectors are oriented properly when connecting.
o
 Make sure that the connectors are inserted securely.
2o
 All lead wires should be passed through the hook on the
 frame assembly, 
and arranged inside of the printer.
H

o
 Make sure that any of the lead wires are not caught by the projections 
(the colored part).
o
 Make sure not to damage the coats of the lead wires when arranging the 
lead wires.
3
Sheet, board´ 1o
 Paste the double-sided tape on the 
sheet, board to the 
circuit board.
variable resistor connector for the platen detector assembly
connector for the 
motor, paper feed, 
receipt, B
connector for the 
lead wire, paper 
cutter
connector for the optional B.M. detector connector for the paper 
detector assembly
hook
projections
sheet, board 
						

							6-26   Assembly and Disassembly Rev. A
Confidential
Adjustment for Printer Module
Adjustment of the black mark detector
Adjust the black mark (B.M.) detector
 using the following procedure.  
Adjustment
stepAdjustment procedure Adjustment point
1o
 Connect the FFC terminal No.12 to an 
oscilloscope to display the output power voltage 
of the B.M. detector on the oscilloscope screen.
2o
 Input DC5 V to the FFC terminal No. 13.
3.o
 Insert a “Kodak Gray Card” into the paper 
entrance.
(“Kodak Gray Card”: A commercially available 
card for adjusting exposure.)o
 Make sure that the gray side of the card is inserted 
along the 
paper guide which the 
B.M. detector 
sub-assembly is installed.
4.o
 Adjust the output power voltage of the 
B.M. 
detector at 1.74 V using the variable resistor on 
the 
circuit board assembly.o
 Turn the slot on the variable resistor to the right 
and the left with a tool such as a flat-head driver, 
to adjust the output power voltage.
.....13  12  11  10 .....
NO.1
NO.15
circuit board
FFC
oscilloscopeDC5 VGND
B.M. detector 
sub-assembly
gray side of the gray card
paper guide

variable resistor 
						

							Rev. A Assembly and Disassembly   6-27 EU-T532/T542 Technical Manual
Confidential
Disassembly
oThe disassembly process is divided into the unit disassembly and the module disassembly. 
First perform the unit disassembly; then proceed to the module disassembly after the 
components have been disassembled into modules.
oDisassembly of printer components beyond the exploded diagrams at the end of this manual 
may result in damage to the printer and its functions.
o and  are given in “Disassembly step” with H and I symbols. 
Make sure to follow the instructions given in these places when disassembly and 
reassembly.
oNew wire bands are required when reassembly for wire bands cut during disassembly. See 
page 6-29 and “Part name” in the disassembly steps for types and numbers of wire bands. 
oThe numbers in the illustrations indicate the step numbers.
Component Configurations Overview
The EU-T532/T542 have two disassembly types for ASP (After Service Parts) replacement. The 
one is “Unit disassembly” for disassembling the EU-T532/T542 into modules, the other one is 
“Module Disassembly” for disassembling each module into small parts. The configurations 
when performing those disassemblies are as follows:
Unit Disassembly (p. 6-30 to 37)
When performing the unit disassembly, the EU-T532/T542 are disassembled into the following 
modules and parts. When you want to disassemble a corresponding item only, see the page and 
the step numbers in brackets after part names. 
oCover, UIB (p. 6-30)
oDust cap (p. 6-30)
oCOM, cover (p. 6-30)
oControl circuit board module (p. 6-30 and p. 6-31: step 5)
oPaper exit (p. 6-33: step 1)
oCut sheet presenter module (p. 6-30 to 34)
oPrinter module (p. 6-30, 31, and 33 to 35)
oPlate, lower paper guide (p. 6-35: step 5)
oPlate, paper guide holder (p. 6-35: step 5 and p.6-36: step 7)
oHolding plate, printer (p. 6-30, 31 to 36)
oCrescent ring (p. 6-37: step 9)
oHolder, paper roll (p. 6-37)
oPaper roll supply module (p. 6-30 to 37)