Printer Mechanism Components - Epson Stylus Pro 4400 Service Manual
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- Reference manual (396 pages) ,
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EPSON Stylus Pro 4400/4450/4800/4880/4880C
2.2 Printer Mechanism Components
The major electrical parts used in the Printer Mechanism of this printer are as
shown below. Hereafter, we will explain each Printer Mechanism focusing on
these parts.
Table 2-1. Printer Mechanism Components
Drive
Part
voltage
Printing Mechanism (Print Head) (p.116)
Print Head
Head Thermistor
+3.3V
Ink Supply Mechanism
(p.118)
Release Sensor
+3.3V
(I/H lever)
ASF/Pump Motor
+42V
Maintenance Tank
+3.3V/+5V CSIC
Pump Phase Sensor
+3.3V
Carriage (CR) Mechanism
(p.125)
CR Motor
+42V
CR_HP Sensor
+3.3V
CR Encoder Sensor
+5V
Multi Sensor
+3.3V
PG/PO Motor
+42V
PG Phase Sensor
+3.3V
Cutter Solenoid
+24V
Paper Feed Mechanism
(p.131)
PF Motor
+42V
Suction Fan
+24V
PF Encoder Sensor
+5V
PE sensor
+3.3V
P_THICK_0.3 Sensor
+3.3V
(Paper thickness/
pressure lever)
Operating Principles
Description
The number of nozzles:
180 nozzles x 8 rows
Incorporated in the Print Head
Reverse tension switch
(mechanical contact)
Stepping motor
Transmission type photo-interrupter
DC motor
Transmission type photo-interrupter
Linear encoder (180LPI)
Reflection type photo-interrupter
Stepping motor
Transmission type photo-interrupter
DC solenoid
DC motor
DC blower fan
Linear encoder (360LPI)
Reflection type photo-interrupter
Transmission type photo-interrupter
Printer Mechanism Components
Table 2-1. Printer Mechanism Components
Part
P_THICK Sensor
(Paper thickness/
pressure lever)
Rear Hand Insertion
Sensor
Reference
ASF/Pump Motor
ASF Paper Sensor
p.116
ASF Phase Sensor
–
Paper Eject/Release Mechanism
PG/PO Motor
p.119
Paper Eject Phase
Sensor
p.123
Paper Eject Release
p.123
Sensor
p.123
Others
(p.151)
P-Cover Open Sensor
p.127
Rear Cover Sensor
p.127
MAIN Board
p.127
Power Supply Board
p.127
p.130
p.130
p.131
p.133
p.133
p.133
p.133
p.133
Drive
Description
voltage
+3.3V/+5V Transmission type photo-interrupter
+3.3V
Reverse tension switch
(mechanical contact)
+42V
Stepping motor
+3.3V
Reverse tension switch
(mechanical contact)
+3.3V
Transmission type photo-interrupter
(p.140)
+42V
Stepping motor
+3.3V
Reverse tension switch
(mechanical contact)
+3.3V
Reverse tension switch
(mechanical contact)
+3.3V
Reverse tension switch
(mechanical contact)
+3.3V
Interlock SW (mechanical contact)
–
Printer control/drive circuit board
–
Power supply PCB
Revision C
Reference
p.133
p.134
p.137
p.137
p.137
p.142
p.142
p.142
p.151
p.151
p.152
p.154
115
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