Epson 3800 Service Manual - Page 39

Layout of Sensors/Encoders/CSIC, Table 2-3., List of Sensors/Encoders/CSIC - black ink marks on paper

Page 39 highlights

EPSON Stylus Pro 3800/3800C/3850 Revision A † Sensors/Encoders/CSIC Table 2-3. List of Sensors/Encoders/CSIC Fig. Name Function Specifications 1 ASF phase sensor Detects the ASF origin Type: Transmissive photo interrupter position. Voltage: 3.3 VDC ± 5 % 2 Release sensor Detects an open/closed Type: Transmissive photo interrupter state of the release roller. Voltage: 3.3 VDC ± 5 % 3 PF encoder Reads the PF scale. Type: Linear encoder (180LPI) Voltage: 3.3 VDC ± 5 % 4 Ink cover sensor Detects an open/closed Type: Mechanical contact state of the ink cover. Voltage: 3.3 VDC ± 5 % 5 Pressure pump home sensor Detects the home position of the pressure pump. Type: Mechanical Contact Voltage: 3.3 VDC ± 5 % 6 Pressure sensor Detects the state of pressurization by the pressure pump. Type: Reflective photo interrupter Voltage: 3.3 VDC ± 5 %, Comparator input Board paper tray open Detects the position of Type: Mechanical Contact 7 sensor the board paper tray. Voltage: 3.3 VDC ± 5 % 8 Ink cartridge sensor CSIC that stores ink cartridge information Type: CSIC Voltage: 3.3 VDC ± 5 % 9 PG origin sensor Detects the origin position of the platen gap. Type: Transmissive photo interrupter Voltage: 3.3 VDC ± 5 % v 10 Ink change sensor Detects the state of the Type: Mechanical contact black ink switch lever. Voltage: 3.3 VDC ± 5 % 11 Ink mark sensor † Auto Bi-D adjustment Type: Diffuse reflective photo interrupter † Auto Uni-D adjustment Voltage: 3.3 VDC ± 5 %, LED: 5 V † Auto nozzle check 12 Maintenance cartridge cover sensor Detects an open/closed state of the maintenance cartridge cover. Type: Mechanical contact Voltage: 3.3 VDC ± 5 % 13 PW sensor † Paper leading edge detection Type: Reflective photo interrupter Voltage: 3.3 VDC ± 5 %, LED: 3.3 V † Paper width detection 14 Maintenance cartridge sensor CSIC that stores maintenance cartridge information. Type: CSIC Voltage: 3.3 VDC ± 5 % Fig. Name 15 PE sensor 16 CR encoder Table 2-3. List of Sensors/Encoders/CSIC Function Detects a rear edge of paper. Reads the CR scale. Specifications Type: Transmissive photo interrupter Voltage: 3.3 VDC ± 5 % Type: Linear Encoder (180LPI) Voltage: 3.3 VDC ± 5 % 3 4 5 21 16 15 6 7 8 9 10 11 12 14 13 Figure 2-3. Layout of Sensors/Encoders/CSIC OPERATING PRINCIPLES Overview 39

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EPSON Stylus Pro 3800/3800C/3850
Revision A
OPERATING PRINCIPLES
Overview
39
²
Sensors/Encoders/CSIC
Figure 2-3.
Layout of Sensors/Encoders/CSIC
Table 2-3.
List of Sensors/Encoders/CSIC
Fig.
Name
Function
Specifications
ASF phase sensor
Detects the ASF origin
position.
Type:
Transmissive photo interrupter
Voltage: 3.3 VDC
±
5 %
Release sensor
Detects an open/closed
state of the release roller.
Type:
Transmissive photo interrupter
Voltage: 3.3 VDC
±
5 %
PF encoder
Reads the PF scale.
Type:
Linear encoder (180LPI)
Voltage: 3.3 VDC
±
5 %
Ink cover sensor
Detects an open/closed
state of the ink cover.
Type:
Mechanical contact
Voltage: 3.3 VDC
±
5 %
Pressure pump home
sensor
Detects the home
position of the pressure
pump.
Type:
Mechanical Contact
Voltage: 3.3 VDC
±
5 %
Pressure sensor
Detects the state of
pressurization by the
pressure pump.
Type:
Reflective photo interrupter
Voltage: 3.3 VDC
±
5 %,
Comparator input
Board paper tray open
sensor
Detects the position of
the board paper tray.
Type
:
Mechanical Contact
Voltage: 3.3 VDC
±
5 %
Ink cartridge sensor
CSIC that stores ink
cartridge information
Type:
CSIC
Voltage: 3.3 VDC
±
5 %
PG origin sensor
Detects the origin
position of the platen
gap.
Type:
Transmissive photo interrupter
Voltage: 3.3 VDC
±
5 %
v
Ink change sensor
Detects the state of the
black ink switch lever.
Type:
Mechanical contact
Voltage: 3.3 VDC
±
5 %
Ink mark sensor
²
Auto Bi-D adjustment
²
Auto
Uni-D
adjustment
²
Auto nozzle check
Type:
Diffuse reflective photo interrupter
Voltage: 3.3 VDC ± 5 %, LED: 5 V
Maintenance cartridge
cover sensor
Detects an open/closed
state of the maintenance
cartridge cover.
Type:
Mechanical contact
Voltage: 3.3 VDC
±
5 %
PW sensor
²
Paper leading edge
detection
²
Paper width detection
Type:
Reflective photo interrupter
Voltage: 3.3 VDC
±
5 %, LED: 3.3 V
Maintenance cartridge
sensor
CSIC that stores
maintenance cartridge
information.
Type:
CSIC
Voltage: 3.3 VDC
±
5 %
1
2
3
4
5
6
7
8
9
10
11
12
13
14
PE sensor
Detects a rear edge of
paper.
Type:
Transmissive photo interrupter
Voltage: 3.3 VDC
±
5 %
CR encoder
Reads the CR scale.
Type:
Linear Encoder (180LPI)
Voltage: 3.3 VDC
±
5 %
Table 2-3.
List of Sensors/Encoders/CSIC
Fig.
Name
Function
Specifications
15
16
16
15
14
9
3
10
12
8
2
11
1
4
5
6
7
13