EPSON Stylus Pro 4400/4450/4800/4880/4880C
Revision C
Operating Principles
Printer Mechanism Components
115
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
Part
Drive
voltage
Description
Reference
Printing Mechanism (Print Head) (p.116)
Print Head
The number of nozzles:
180 nozzles x 8 rows
Head Thermistor
+3.3V
Incorporated in the Print Head
–
Release Sensor
(I/H lever)
+3.3V
Reverse tension switch
(mechanical contact)
ASF/Pump Motor
+42V
Stepping motor
Maintenance Tank
+3.3V/+5V CSIC
Pump Phase Sensor
+3.3V
Transmission type photo-interrupter
CR Motor
+42V
DC motor
CR_HP Sensor
+3.3V
Transmission type photo-interrupter
CR Encoder Sensor
+5V
Linear encoder (180LPI)
Multi Sensor
+3.3V
Reflection type photo-interrupter
PG/PO Motor
+42V
Stepping motor
PG Phase Sensor
+3.3V
Transmission type photo-interrupter
Cutter Solenoid
+24V
DC solenoid
PF Motor
+42V
DC motor
Suction Fan
+24V
DC blower fan
PF Encoder Sensor
+5V
Linear encoder (360LPI)
PE sensor
+3.3V
Reflection type photo-interrupter
P_THICK_0.3 Sensor
(Paper thickness/
pressure lever)
+3.3V
Transmission type photo-interrupter
P_THICK Sensor
(Paper thickness/
pressure lever)
+3.3V/+5V Transmission type photo-interrupter
Rear Hand Insertion
Sensor
+3.3V
Reverse tension switch
(mechanical contact)
ASF/Pump Motor
+42V
Stepping motor
ASF Paper Sensor
+3.3V
Reverse tension switch
(mechanical contact)
ASF Phase Sensor
+3.3V
Transmission type photo-interrupter
PG/PO Motor
+42V
Stepping motor
Paper Eject Phase
Sensor
+3.3V
Reverse tension switch
(mechanical contact)
Paper Eject Release
Sensor
+3.3V
Reverse tension switch
(mechanical contact)
P-Cover Open Sensor
+3.3V
Reverse tension switch
(mechanical contact)
Rear Cover Sensor
+3.3V
Interlock SW (mechanical contact)
MAIN Board
–
Printer control/drive circuit board
Power Supply Board
–
Power supply PCB
Table 2-1. Printer Mechanism Components
Part
Drive
voltage
Description
Reference
Summary of Contents for Stylus Pro 4800 Portrait Edition
Page 9: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Page 113: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Page 156: ...C H A P T E R 3 TROUBLESHOOTING ...
Page 200: ...C H A P T E R 4 DISASSEMBLY ASSEMBLY ...
Page 366: ...C H A P T E R 5 ADJUSTMENT ...
Page 448: ...C H A P T E R 6 MAINTENANCE ...
Page 457: ...C H A P T E R 7 APPENDIX ...