Overview - Epson 4003353 Service Manual

Stylus Color service Manuel

OVERVIEW

5.1
The printer may exhibit different symptoms for the same problem, which makes troubleshooting
more difficult. This section, however, provides simple and effective ways to facilitate
troubleshooting. The following flowchart illustrates the main steps of the troubleshooting process.
Figure 5-1. Troubleshooting Process
Motor
CR Motor
PF Motor
Sensor
PE Sensor
BCO Sensor
CCO Sensor
HP Sensor
TH Sensor
Rev. A
ASSEMBLY
AND
ADJUSTMENT
Table 5-1. Motor Resistance
Resistance
1 O.on * 770
11.5 + 1 .lQ
Table 5-2. Sensor Status
Point Signal Level
H (5V)
CN8 / Pin 1
L (GND)
L (GND)
CN11 / Pin 8
H (5V)
L (GND)
CN12 / Pin 8
H (5V)
L
CN9 / Pin 3
H
CN1O / Pin 10 Analog data
Troubleshooting
Flowchart
Remark
At25'C (77 'F)
At25'C (77 "F')
status
Paper exist
No paper (Paper end)
Black cartridge exist
No black cartridge
Color cartridge exists
No color cartidge
At home position (HP)
Out of HP
Change the pulse width of the
charge pulse for the common
driver circuit
5-1