Overview - Epson Stylus Photo R310 Service Manual

EPSON Stylus Photo R300/R310

1.1 Overview

This chapter describes how to identify troubles in two levels: unit level repair and
component level repair. Refer to the flowchart in this chapter to identify the defective
unit and perform component level repair if necessary. This chapter also explains motor
coil resistance, Sensor specification and error indication.
UNIT-LEVEL TROUBLESHOOTING
UNIT REPAIR
ASSEMBLY AND ADJUSTMENT
Figure 1-1. Troubleshooting Flowchart
TROUBLESHOOTING
START
END
Table 1-1. Motor, Coil Resistance
Motor
PF Motor
(Same as ASF/
Pump Motor)
Since "CR Motor" and APG Motor are DC motors, the resistance among the electric
poles varies. Therefore, judge if it is normal or abnormal based on if there is operation
of the motor or not; the resistance values cannot be used to judge the abnormality.
However, it is difficult to judge accurately, if it is not clear, replace the motor.
Table 1-2. Sensor check point
Sensor name Location
PE Sensor CN4
PG Sensor CN5
Star Wheel
CN6
Sensor
CDR Sensor CN6
Overview
Location Check Point
Pin 1 and 3
CN9
Pin 2 and 4
Check point Signal level
More than 2.4V
Pin 1 and 2
Less than 0.4V
More than 2.4V
Pin 1 and 2
Less than 0.4V
-
Pin 1 and 2
-
-
Pin 3 and 4
-
Revision A
Resistance
±
3.0Ω 10%
(25°C/phase)
Switch mode
Off :
No paper
On :
Detect paper
Off :
Anywhere of PG
On :
In process of
switching PG
On :
ASF mode
Off :
CDR mode
Off :
No CDR Tray
On :
Detect CDR Tray
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