EPSON Stylus CX4100/CX4200/CX4700/CX4800/DX4200/DX4800/DX4850
Revision A
TROUBLESHOOTING
Overview
88
3.1 Overview
This chapter describes unit-level troubleshooting. 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 3-1. Troubleshooting flowchart
Note : Since CR Motor and PF 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.
3.2 Error Indications and Fault Occurrence
Causes
This section describes the LED indications, STM3 messages and fault occurrence
causes at occurrence of the following errors during any sequence/operation (e.g.
power-on sequence, paper feeding/loading sequence, ink sucking sequence).
NOTE: The STM3 windows shown in the table in the following pages are the
ones of Stylus CX4800, however, other models show almost the same
diplays as those except the following items:
1) SPC name (SPC: Scanner/Printer/Copier)
2) T-code for each ink cartridge (refer to
)
Table 3-1. Motor, coil resistance
Motor
Location
Check point
Resistance
Scanner motor
CN10
Pin 1 and 3
Pin 2 and 4
37
Ω
±
10%
START
Unit-level troubleshooting
Unit repair
Assemble & Adjustment
END
Table 3-2. Sensor check point
Sensor name
Check point
Signal level
Switch mode
PE Sensor
CN3 / Pin 1 and 2
Less than 0.4V
Off: No paper
More than 2.4V On : Detect the paper
PG Sensor
CN4 / Pin 1 and 2
—
On : PG large
Off: PG normal
Scanner HP Sensor
CN13 / Pin 1 and 2
—
On : Within Scanner Carriage
home position
Off: Out of Scanner Carriage
home position
Summary of Contents for CX4200 - Stylus Color Inkjet
Page 9: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Page 60: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Page 87: ...C H A P T E R 3 TROUBLESHOOTING ...
Page 121: ...C H A P T E R 4 DISASSEMBLY ASSEMBLY ...
Page 171: ...C H A P T E R 5 ADJUSTMENT ...
Page 187: ...C H A P T E R 6 MAINTENANCE ...
Page 194: ...C H A P T E R 7 APPENDIX ...
Page 221: ...Model PX A650 Stylus CX4700 CX4800 DX4800 DX4850 Board C571 PNL Rev D Sheet 1 1 ...
Page 222: ...Model Stylus CX4100 CX4200 DX4200 Board C577 PNL Rev A Sheet 1 1 ...