Remedies For Fatal Error - Epson Stylus PHOTO 1270 Service Manual

EPSON Stylus Photo 870/1270

3.1.1.7 Remedies for Fatal Error

A fatal error is basically caused by any of the following conditions:
!
The printer fails to detect the CR home position.
!
The printer fails to detect signals from the linear scale.
!
The ASF sensor fails to detect the ASF home position.
The following table shows various causes of the fatal error and
corresponding solutions. Be sure to follow the steps correctly to
troubleshoot the fatal error.
NOTE: If the exhibited problem is similar to a problem listed under
"Problem", take the actions in the right column. If not, proceed to the
next step.
Table 3-9. Remedies for Fatal Error
Step Problem Check & Actions
1 The printer is Check the linear encoder board visually for the
powered on and the following:
CR unit leaves its
• Is the linear encoder board properly installed
home position and
to the carriage? If not, install it properly.
then collides with
• Is the encoder FFC connected to the connector?
the right/left frame.
If not, connect it properly.
After that, a fatal
error is displayed.
• Check that the linear encoder belt passes
2 Ditto
through the slot in the sensor.
• Check that the sensor is free from dust and
paper debris.
TROUBLESHOOTING
Linear Encoder Board
Overview
Table 3-9. Remedies for Fatal Error (continued)
Step Problem Check & Actions
• Referring to the figure below, check that the
3 When the Printer is
ASF sensor is attached to the correct position.
turned on, the CR
moves a little and • Check that both connectors 1 and 2 are
you hear the ASF securely connected.
Hopper moving.
ASF Frame (Left)
After that, a fatal
error is displayed.
4 Ditto Turn the printer on and check for the correct
voltages at the pins shown in the figure below:
• When the ASF HP detector wheel is in home
• When the ASF HP detector wheel is out of
Revision B
ASF Sensor
Control
Board
Connector 1
Connector 2
CN6
To Pin 3
(ASFV)
To Pin 2
(GND)
position, the voltage is 0.7 V or less.
home position, the voltage is 2.4 V or more.
64