Removing the Printhead

Remove the Middle Housing. (Refer to 4.2.1.3.) 3. Pull and release the two left and right joggles, which secure the I C Cover to the Carriage Unit, inward and remove the I C Cover from the Carriage Unit. 4. Move the Carriage Unit to the printer center. 5. Release the four hooks that secure the Head Cable Holder to the Carriage Unit, and lift and remove the Head Cable Holder from the Carriage Unit. Figure 4-57. Removing the Head Cable Holder Figure 4-57. Removing the Head Cable Holder 6. Release...

Error Indications and Fault Occurrence Causes

This section explains the LED indications, EPW3 messages and fault occurrence causes at occurrence of the following errors during any sequence operation (e.g. power-on sequence, paper feeding loading sequence, ink sucking sequence). Table 3-1. Error Indications and Fault Occurrence Causes This error is detected when the printer cannot communicate with the PC properly. Examples are as follows. 1. The connection port differs from the port used on the driver. CAUTION Since D4 is also supported by...

Superficial Phenomenon Based Troubleshooting

This section applies to the fault locations of the error states print quality fault and abnormal noise other than the error states LED and EPW3 in the previous section. Table 3-18. Print Quality Fault Check Points 1. Check for foreign matter around the Seal rubber on the Cap unit. Phenomenon 1 In the CL sequence, the Pump unit operates properly but ink is not ejected to the Waste ink pads. Ink is not sucked from the Printhead into the Cap at all. Hence, printing is not executed if a print...

Removing the ASF Unit

Refer to 4.2.1.2. 2. Disconnect the Connector Cable of the ASF Sensor from the ASF Unit. 3. Remove the two screws 9 C.B.S P4 3x6 6 1kgf.cm and one screw 10 CR mount shaft that secure the Roll Paper Guide and ASF Unit. Figure 4-23. Screws That Secure the Roll Paper Guide Figure 4-23. Screws That Secure the Roll Paper Guide 4. While lifting the Roll Paper Guide and ASF Unit slightly upward as viewed from the printer rear, slide them to the right to release the three...

Paper Cutter Mechanism

The Paper cutter mechanism consists of such main parts as the Cutter motor, left and right HP sensors 2 pcs. in all , Relay board, Paper eject roller shaft and Paper hold-down flap in the Cutter unit. When the Cutter blade starts cutting, the Paper hold-down flap rises and holds the paper during cutting. The HP sensors for detection of the Cutter blade position are installed on both ends of the cutter operation area, detect whether the Cutter blade operates properly, and displays Cutter...

Removing the Waste Ink Pads

Epson Stylus Color 740 Waste Ink

Referto 4.2.1.4. 2. Peel the Waste Ink Pad Fixing Films, which secure the Waste Ink Pads, from the Lower Housing, and pull up and remove the Waste Ink Pads from the Lower Housing. Figure 4-21. Removing the Waste Ink Pads The Waste Ink Pads Small and the Waste Ink Pads located on the front right side and right side as viewed from the printer front are fixed by double-faced tape. When reapplying them, change the tape if its adhesive force is weak. Refer to Figure...

Epson Printer R230 Roller Spring

Epson Sensor Measurement

Paper eject support roller star wheel roller Paper eject roller B Paper eject roller A PF roller Paper eject roller B Paper eject roller A PF roller Table 2-9. ASF Pump Motor Specifications Table 2-9. ASF Pump Motor Specifications 4-phase, 48-pole PM type stepping motor Bipolar drive constant-current drive 42V - 5 voltage applied to driver The following table indicates the rotation directions for driving the ASF unit pump mechanism. Table 2-10. ASF Pump Motor Rotation Directions Table 2-10. ASF...