Service manual

EPSON Stylus Photo R260/R265/R270, R360/R380/R390 Revision B
Troubleshooting Overview 32
3.1 Overview
This chapter provides how to troubleshoot problems analyzing the cause based on the
error messages displayed on the printer and the observed symptom. Identify and
troubleshoot the problem referring to the tables on the following pages. When some
parts need to be replaced, make sure to follow the procedure given in Chapter 4 and
carry out required adjustments. If any abnormality is observed in motors or sensors,
check the electrical value referring to the 3.1.1 "Troubleshooting on Motors and
Sensors"(p.32).
Figure 3-1. Troubleshooting Flowchart
3.1.1 Troubleshooting on Motors and Sensors
The following tables show the normal electric values of each motor and sensor. When
any abnormality is observed in motors and sensors, check their electric values and
compare them with the values given in the tables to see if the motors or sensors are
broken or not.
Note : See 2.1.2 "Motors & Sensors"(p.25) for locations of the motors and sensors.
Start
Identifying the error cause by the error
message or observed symptom.
Repair or replacement of
parts or components
Reassembly and adjustment
End
Table 3-1. Motor Resistance & Measuring Points
Motor Motor Connector Measuring Points Resistance
CR Motor
R360/R380/R390: CN14
R260/R265/R270: CN14
Between Pin 1 and 2 22.7Ω ±
10%
PF Motor
R360/R380/R390: CN15
R260/R265/R270: CN13
Between Pin 1 and 2 21.2Ω ±
10%
Table 3-2. Sensor Checkpoints
Sensor Sensor Connector Signal Level Status
PE Sensor
R360/R380/R390: CN8
R260/R265/R270: CN6
Between Pin 1-2
2.4V or more No paper
0.4V or less Paper exists
APG Sensor
R360/R380/R390: CN7
R260/R265/R270: CN7
Between Pin1- 2
2.4V or more Within PG position
0.4V or less Out of PG position
CDR Guide Sensor
R360/R380/R390: CN9
R260/R265/R270: CN4
Between Pin1- 2
Open: 2.4V or more CDR Guide lowered
Close: 0.4V or less CDR Guide raised
CD-R Tray Sensor
R360/R380/R390: CN9
R260/R265/R270: CN4
Between Pin3- 4
Open: 2.4V or more CD-R Tray inserted
Close: 0.4V or less No CD-R Tray