Epson 3800 Service Manual - Page 39
Layout of Sensors/Encoders/CSIC, Table 2-3., List of Sensors/Encoders/CSIC - black ink marks on paper
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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