EPSON Stylus Photo 1390/1400/1410 Revision B
OPERATING PRINCIPLES Overview 22
2.1 Overview
This chapter explains the operating principles of the mechanical sections and electrical
circuits in this product. The main components of this product are as follows.
Control Circuit Board : C655 MAIN
Power Supply Circuit Board : C589 PSB
Control Panel Board : C589 PNL
Head Circuit Board : C653 HEAD
2.2 Printer Mechanism
In common with previous model, this printer uses DC motors and stepping motors as
power source. The following table describes the motor types and their applications.
The basic mechanism is the same as the Stylus Photo R1800.
Figure 2-1. Printer Mechanism Outline
Table 2-1. Motors
Motor Name Type Applications/Functions
CR Motor DC motor with brushes
Drives the Carriage. Makes very little driving
noise. Controlled by the CR linear scale and CR
encoder sensor.
PF Motor DC motor with brushes
Drives the paper feed roller for the fixed-value
paper loading or the paper feed/eject operation. To
grasp the paper feed pitch, the precision gear
surface is fitted with the PF Scale and the PF
Encoder Sensor is used to control the motor.
APG Motor DC motor with brushes
Drives the Carriage Unit at the time of PG setting.
The two APG Sensors and Carriage Shaft are
driven vertically to control the motor.
ASF Motor
4-phase, 48-pole PM type
stepping motor
Drives the paper feed operation of the ASF. Since
this is a stepping motor, no scales or photo sensors
are required to grasp the driving conditions.
Pump Motor
4-phase, 48-pole PM type
stepping motor
Drives the pump, wiper, etc. of the Ink System.
Since this is a stepping motor, no scales or photo
sensors are required to grasp the driving
conditions.
Rear Paper
Eject Roller
Front Paper
Eject Roller
PW Sensor
CR Scale
PF Roller
PF Encoder
Sensor
PF Scale
PF Motor
Carriage
Unit
Ink System
Unit
Pump Motor
CD-R Sensor
Carriage
Shaft
APG Sensors
APG Motor
APF Sensor
Timing Belt
CR Encoder
Sensor
LD Roller
Retard
Roller
PE Sensor
ASF Motor
CR Motor
The Stylus Photo 1390 is not
equipped with CD-R Sensor.
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