Overview; Troubleshooting On Motors And Sensors - Epson Stylus Photo R280 Service Manual

Epson Stylus Photo R280/R285/R290/Epson Artisan 50/Epson Stylus Photo T50/T59/T60/P50

3.1 Overview

This chapter provides how to troubleshoot problems analyzing the cause based on the
messages shown by the printer driver, printer's LED status 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
and Sensors"(p.30).
Identifying the error cause by the error
message or observed symptom.
Repair or replacement of
parts or components
Reassembly and adjustment
Figure 3-1. Troubleshooting Flowchart
Chapter 3 Troubleshooting
3.1.1 "Troubleshooting on Motors
Start
End

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.
Table 3-1. Motor Resistance & Measuring Points
Motor Motor Connector
CN14
CR Motor
CN13
PF Motor
Sensor Sensor Connector
CN6
PE Sensor
Between Pin 1 and 2
CN7
APG Sensor
Between Pin 1 and 2
CN4
CDR Guide Sensor
Between Pin 1 and 2
CN4
CD-R Tray Sensor
Between Pin 3 and 4
CN17
Cover OPEN Sensor
Between Pin 1 and 2
Note : See 2.1.2 "Motors & Sensors"(p.24)
3.1 Overview
Measuring Points
Between Pin 1 and 2
Between Pin 1 and 2
Table 3-2. Sensor Checkpoints
Signal Level
2.4V or more
0.4V or less
2.4V or more
0.4V or less
Open: 2.4V or more
Close: 0.4V or less
Open: 2.4V or more
Close: 0.4V or less
Open: 2.4V or more
Close: 0.4V or less
for locations of the motors and sensors.
Revision C
Resistance
22.7Ω ± 10%
21.2Ω ± 10%
Status
No paper
Paper exists
Within PG position
Out of PG position
CDR mode
(Stacker is at the upper
position)
ASF mode
(Stacker is at the lower
position)
CD-R Tray inserted
No CD-R Tray
Printer Cover opened
Printer Cover closed
30
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