Carriage Mechanism; Cr Motor Specifications; Pw Sensor - Epson Stylus Photo RX700 Service Manual

EPSON Stylus Photo RX700

2.2.2 Carriage Mechanism

The Carriage Mechanism consists of the CR Motor, CR Belt, Driven Pulley Assy, CR
Guide Shafts (x2), Carriage Assy, CR Scale Mounting Plate Assy, Parallelism Adjust
Bushes (x4), APG Assy, etc.

2.2.2.1 CR Motor Specifications

Item
Type
Voltage
Armature resistance
Characteristics Inductance
Rotor inertia

2.2.2.2 PW Sensor

Function
Detection of the top, bottom, right and left edges of a cut sheet
Detection of the center of CD-R
Detector specifications
Item
Photo-electric conversion system (reflection type) (SHARP
Detection method
GP2S700HCP)
Open-collector Collector withstand voltage 35 V or below
Sink current 0.2 mA or below
Electrical
characteristics
Drive voltage 1 3.3 V ± 5%
Drive voltage 2 3.3 V ± 5%
Switch mode
Detected Condition Switch Mode
There is paper Open
There is no paper Closed
Note : The leading signal is A/D-converted in 8 bits.
Operating Principles
Specifications
DC brush motor (Mabuchi Motor RS445PB-15205B)
42 V (DC voltage) ± 5% (voltage applied to the driver)
23.6Ω ± 15%
17.5mH ± 25%
2
20.8 gcm
Specifications
Detector Output
Low voltage
High voltage
Mechanism Operating Principles
Driven Pulley Assy
Linear Scale
CR Encoder
Carriage Assy
CR Guide Shaft (x2)
CR Scale Mounting Plate Assy
Figure 2-7. Carriage Mechanism
Printhead
PW Sensor
CR Encoder Board
Figure 2-8. Bottom of Carriage Assy
Revision A
CR Motor
CR Belt
22