Overview - Epson Stylus COLOR 880 Service Manual

EPSON Stylus COLOR 880

3.1 Overview

This chapter describes how to troubleshoot problems. It consists of the
sections shown in the flowchart below. When identifying and
troubleshooting problems, be sure to proceed to the correct section
specified in the flowchart.
Figure 3-1. Troubleshooting Flowchart
Troubleshooting
Following sections show detailed information on each step in the
flowchart. Be sure to perform troubleshooting without neglecting the
correct order specified in each section.
First of all, following tables show you the Motor Resistance and the
sensor check informations.
Table 3-1. Motor Resistance and Measurement Procedure
Motor Name
CR Motor • CN14 (Main board) Pin 1 & 2,
PF Motor • CN13 (Main Board)
ASF/Pump Motor • CN7 (Main Board)
Table 3-2. Sensor Check an Measurement Procedure
Sensor Connector No.
PE Sensor CN5 Pin 1 & 2
ASF/HP Sensor CN6 Pin 1 & 2
PF Motor CN12
Enscorder Sensor Pin 2 or 4 &
Pin 1(GND)
CR Motor CN8
Encorder Sensor Pin 2 or 4 &
Pin 1(GND)
Black I/C CN9
Detection Sensor Pin 15 & Pin 18
Color I/C CN9
Detection Sensor Pin 15 & Pin 17
Overview
Location Check Point
31.1 OHM +/- 25%
Pin 1 & 2, 47.62 OHM +/- 25%
Pin 1& 3, 10.4 OHM+/-10%
Pin 2 & 4,
Measurement
value
• 0V
• 5V
• 0V
• 5V
• 0V
• 5v
• 0V
• 5v
• 5V
• 0V
• 5V
• 0V
Revision A
Status
Detect the Paper
No Paper
Detect the ASF HP
Not detect ASF HP
Transparency slit
Black Slit
Transparency slit
Black Slit
I/C is not installed
I/C is installed
I/C is not installed
I/C is installed
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