Epson R320 - Stylus Photo Color Inkjet Printer, Руководство по обслуживанию

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EPSON Stylus Photo R320 Revision B
TROUBLESHOOTING Overview 8
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.
Figure 1-1. Troubleshooting Flowchart
Since CR Motor and APG Motor are DC motors, the resistance value among the
electric poles varies. Therefore, the values cannot be used to judge the abnormality.
The only way to judge it is visible status like if the motor rotates or not. Naturally the
accurate judgement is impossible, so replace the motor when it is suspected.
START
UNIT-LEVEL TROUBLESHOOTING
UNIT REPAIR
ASSEMBLY AND ADJUSTMENT
END
Table 1-1. Motor, Coil Resistance
Motor Location Check Point Resistance
PF Motor
(Same as ASF/
Pump Motor)
CN9
Pin 1 and 3
Pin 2 and 4
3.0
Ω ±
10%
(25°C/phase)
Table 1-2. Sensor check point
Sensor name Location Check point Signal level Switch mode
PE Sensor CN4 Pin 1 and 2
More than 2.4V
Off :
No paper
Less than 0.4V
On :
Detect paper
PG Sensor CN5 Pin 1 and 2
More than 2.4V
Off :
Anywhere of PG
Less than 0.4V
On :
In process of
switching PG
Star Wheel
Sensor
CN6 Pin 1 and 2
-
On :
ASF mode
-
Off :
CDR mode
CDR Sensor CN6 Pin 3 and 4
-
Off :
No CDR Tray
-
On :
Detect CDR Tray