Main Unit (Sensor)

No. Name Element Function Type Replacement procedure
1 Paper Eject Tray Full Front Detection Sensor EJ Detects the full stack of the Tray. Remote type photo interrupter Paper Eject Tray Full Front Detection Sensor
2 Font Cover Sensor Main Unit Detects opening and closing states of the front cover. Mechanical contacts Front Cover Sensor
3 PG HP Sensor Motion Detects the home position for the APG. Transmission type photo interrupter ---
4 Right Cover Sensor MP/DUP Detects the open/closed state of the Right Door Unit. Mechanical contacts Right Cover Sensor
5 Inter-Lock Switch MP/DUP Stops the printer while the Right Door Unit is opened Interlock Switch Inter-Lock Switch
6 Maintenance Box CSIC IS Detects the insertion state of the Maintenance Box CSIC Ink System Unit
7 Maintenance Box Full Sensor IS Detects the full waste of the Maintenance box. Reflective photo interrupter

No. Name Element Function Type Replacement procedure
8 C1 Paper Size/Width Sensor ASF Detects the edge guide position of the cassette to judge the size of the loaded paper.(Judge the paper width at the end guide position) Mechanical contacts C1 Paper Size/Cassette Sensor
9 C1 Cassette Sensor ASF Detects the insertion state of the Paper cassette.
10 C1 Lift Up Motor Control Sensor ASF Detects a near-end state of paper in the Paper cassette by detecting the position of the lever that moves with the hopper. Transmission type photo interrupter C1 Liftup Motor Assy
11 C1 Lift Up Upper Limit Sensor ASF Detects whether paper is present or not in the paper cassette by the position of the lever of C2 Paper Pickup Unit.
12 Ink Leak Sensor 6 Main Unit Detects the ink leakage from the Ink path. Analog sensor ---

No. Name Element Function Type Replacement procedure
13 MP Tray Paper Sensor MP Detects whether paper is present or not in the MP Tray. Reflective photo interrupter MP Tray Paper Sensor
14 MP Tray Paper Width/Size Sensor MP Detects the width and size of the paper loaded in the MP Tray. Mechanical contacts Paper Tray Assy

No. Name Element Function Type Replacement procedure
15 Post-Reversing Paper Feed Sensor DUP Detects whether or not there is paper around the Reversal Roller. Reflective photo interrupter Post-Reversing Paper Feed Sensor
16 Duplex Paper Feed Sensor

DUP

Detects whether paper is present or not near the Duplex Roller. Reflective photo interrupter Duplex Paper Feed Sensor
17 HP Sensor, MP Tray MP Detects the HP of MP Tray to control the Hopper. Transmission type photo interrupter MP Tray HP Sensor
18 C1 Paper Feed Sensor ASF Detects the top edge of the paper around the Paper Feed Roller 1. Reflective photo interrupter C1 Paper Feed Sensor
19 C1 Paper Sensor ASF Detects whether paper is present or not in the paper cassette by the position of the lever of C1 Paper Pickup Unit. Transmission type photo interrupter
C1 Pickup Unit
20 C1 Paper Near-End Sensor ASF Detects a near-end state of paper in the Paper cassette by detecting the position of the lever that moves with the hopper. Transmission type photo interrupter

No. Name Element Function Type Replacement procedure
21 Temp./Humidity Sensor Main Unit Measures temp/humidity to set the appropriate drying time. Analog sensor Temp/ Humidity Sensor
22 Printing Encoder HP Sensor PF Detects the home position for the Printing Encoder. Transmission type photo interrupter Belt unit
23 Belt Cleaner Positioning Sensor PF Detects the belt cleaner control position. Transmission type photo interrupter
24 Belt Tension Release HP Sensor ASF Detects the home position for driving the Belt Tension Release Motor. Transmission type photo interrupter
25 Belt Cleaner Positioning Sensor ASF Detects the home position for the Belt Cleaner. Transmission type photo interrupter
26 PW Sensor ASF Detects the width of the paper. Reflective photo interrupter PW sensor unit
27 PW Carriage HP Sensor ASF

Detects the Paper Width Sensor Carriage is at home position.

Transmission type photo interrupter

No. Name Element Function Type Replacement procedure
28 Tray Pre-Eject Sensor EJ Detects whether paper is present or not just before the paper ejection roller that ejects paper to the Face-down output tray. Reflective photo interrupter EJ Unit Assy
29 Post-Belt Sensor PF Detects the present or not immediately after paper passed through the Belt Unit. Reflective photo interrupter Post-Head Paper Guide Assy
30 Post-Head Paper Sensor PF Detects the present or not immediately after paper passed through the Head Unit. Reflective photo interrupter
31 Pre-Head Paper Sensor PF Detects the present or not immediately before paper passed through the Head Unit. Reflective photo interrupter Anti Static Brush
32 Pre-Printing Sensor ASF To control start of printing, detects whether paper is near the head or not, and detects the paper top edge. Reflective photo interrupter

No. Name Element Function Type Replacement procedure
33 Head APG Cam Touch Sensor 1(Front) Motion Detects that the Head Unit has moved to the arrow position. Transmission type photo interrupter Head APG Cam Touch Sensor
34 Head APG Cam Touch Sensor 2(Rear)

No. Name Element Function Type Replacement procedure
35 Tray Full Upper Detection Sensor EJ Detects the full stack of the Tray. Remote type photo interrupter Tray Full Upper Detection Sensor
36 Head HP Sensor Motion Controls the Head Unit Up/Down by detecting the HP of the Head Unit. Transmission type photo interrupter Head HP Sensor
37 HP Sensor, Wiper Motion Detects the wiper unit HP and controls the drive of the wiper unit. Transmission type photo interrupter Wiper HP Sensor
38 HP Sensor, Cap Motion Detects the cap unit HP and controls the drive of the cap unit. Transmission type photo interrupter Cap HP Sensor

No. Name Element Function Type Replacement procedure
39 Pressure Sensor IS Detects positive and negative pressure. Analog sensor Ink System Unit
40 CSIC K Detects the insertion state of ink cartridges. CSIC
41 CSIC Y
42 CSIC M
43 CSIC C
44 Ink End Sensor K Detect the amount of ink in the sub tank. ACES Sensor
45 Ink End Sensor Y
46 Ink End Sensor M
47 Ink End Sensor C
48 Inclination Sensor Detects the product is tilted. Acceleration Sensor
49 Ink Flow Path Valve Position Sensor 1 Detects status of the ink flow path valve 1. Transmission type photo interrupter
50 Ink Flow Path Valve Position Sensor 2 Detects status of the ink flow path valve 2. Transmission type photo interrupter
51 Ink Leak Sensor 1 Detects the ink leakage from the Ink path. Analog sensor

No. Name Element Function Type Replacement procedure
52 Valve Selection HP Sensor IS Detects the HP of the valve selection cam. Transmission type photo interrupter Ink System Unit
53 Ink Leak Sensor 3 Detects the ink leakage from the Ink path. Analog sensor
54 Ink Leak Sensor 2

No. Name Element Function Type Replacement procedure
55 Ink Leak Sensor 4 IS Detects the ink leakage from the Ink path. Analog sensor Ink System Unit
56 Ink Leak Sensor 5