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EPSON Stylus Photo R340/350

1.1 Overview

This chapter describes how to troubleshoot problems. Be sure to see the tables
provided in this chapter to identify the component that caused the problem you face.
And follow the instructions in the table to troubleshoot the component. Also refer to
the Motor Wire-Wound Resistor and Sensor Check Points.
Identifying the unit (component) caused the problem
Repairing the unit (component)
Reassembly and adjustment
Figure 1-1. Troubleshooting Workflow
Troubleshooting
Start
Finish
Table 1-1. Motor Wire-Wound Resistor
Motor
Connected Pin No.
PF Motor
(ASF/Pump Motor)
NOTE:As the CR Motor and the APG Motor are DC motors, the resistance between the pins
fluctuates. So checking them if they work properly or not is made only by observing them
visually (if they rotate or not). It is, however, sometimes difficult to judge, so when in
doubt, replace the motor.
Table 1-2. Sensors Check Point
Sensor
Pin No.
Check point
Tray Sensor
CN2
Pin 1 and 2
CDR Sensor
CN2
Pin 3 and 4
PG Sensor
CN3
Pin 1 and 2
PE Sensor
CN4
Pin 1 and 2
Overview
Check Point
CN10
Pin 1 and 3
Pin 2 and 4
Signal level
Sensor Statuses
---
Open:
Nipped with Star Wheel
(ASF mode)
---
Close:
Star Wheel is released
(CDR mode)
---
Close: CDR Tray not attached
---
Open: CDR Tray attached
2.4V or more
Close: PG is set to a preset amount
0.4V or lower Open: Switching PG setting
2.4V or more
Close: No paper loaded
0.4V or lower Open: Paper is loaded
Revision A
Resistance
3.0Ω
±
10%
(25°C/phase)
8

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Troubleshooting

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Stylus photo 350

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