Epson Stylus Photo R290, Руководство по обслуживанию, Страница: 28 / 125

EPSON Stylus Photo R280/R285/R290 Revision B
Chapter 3 Troubleshooting 3.1 Overview 28
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
3.1.1 “Troubleshooting on Motors
and Sensors”(p.28) .
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.23) 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
CN14 Between Pin 1 and 2 22.7
Ω
± 10%
PF Motor
CN13 Between Pin 1 and 2 21.2
Ω
± 10%
Table 3-2. Sensor Checkpoints
Sensor Sensor Connector Signal Level Status
PE Sensor
CN6
Between Pin 1 and 2
2.4V or more No paper
0.4V or less Paper exists
APG Sensor
CN7
Between Pin 1 and 2
2.4V or more Within PG position
0.4V or less Out of PG position
CDR Guide Sensor
CN4
Between Pin 1 and 2
Open: 2.4V or more
CDR mode
(Stacker is at the upper
position)
Close: 0.4V or less
ASF mode
(Stacker is at the lower
position)
CD-R Tray Sensor
CN4
Between Pin 3 and 4
Open: 2.4V or more CD-R Tray inserted
Close: 0.4V or less No CD-R Tray
Cover OPEN Sensor
CN17
Between Pin 1 and 2
Open: 2.4V or more Printer Cover opened
Close: 0.4V or less Printer Cover closed