EPSON Stylus COLOR C70/C80
Revision A
Troubleshooting
Overview
77
Table 3-10. Countermeasures when a fatal error occurs
Step
Check Point
Remedy
1
Is the linear scale
not moving in
between the
photo sensor
(photo coupler)
parts on the
underside of the
carriage?
(or is the area
around the photo
sensor clear of
problems?)
NOTE:
These countermeasures include ways to solve paper
loading problems when there is dirt or other foreign
materials on the linear scale, but paper jams may also
occur depending on the level of dirtiness, so processing
as a carriage error (fatal error) may also be required.
If the linear scale does not move inside the photo sensor, a fatal
error will occur. Check if the condition is as shown in the
illustration below or not. If the linear scale is not inside the
photo sensor, re-adjust the positions of the linear scale and photo
sensor.
Look through the cut-away part of the mechanism at the home
position side of the carriage and check if the encoder (photo
coupler) is blocked with paper or dust. If it is blocked with paper
or dust, use a cotton swab or similar to clean away the blockage.
If the surface is dirty, remove the linear scale and clean it with a
cloth moistened with alcohol.
CR Encoder
Liner Scale
Dust or Smeared Points
2
Is the FFC
disconnected or
almost
disconnected
from the junction
board on the
underside of the
carriage?
CN1 is the connector that handles the input and output of signals
between the main board and the mechanism. It inputs the various
encoder signals to the main board from the mechanism, and
outputs head drive signals from the main board.
3
Is the rotary scale
not moving in
between the PF
encoder (photo
coupler) parts?
(or is the area
around the photo
sensor clear of
problems?)
If the rotary scale is not inside the photo sensor, the PF motor
will operate at high speed and the mechanism may become
overloaded, resulting in a fatal error. Check if the condition is as
shown in the illustration below or not. If the rotary scale is not
inside the photo sensor, re-adjust the rotary scale so that it is
inside the photo sensor. Furthermore, check if the connector that
transmits the signal from the rotary encoder to the main board is
disconnected.
4
Check if CN12
(white: 4-pin) on
the main board is
disconnected.
CN12 on the main board is a connector that transmits the
feedback signal from the PF encoder to the main board.
Accordingly, if this connector is disconnected, the result is the
same as if there is a malfunction of the PF encoder.
Table 3-10. Countermeasures when a fatal error occurs
Step
Check Point
Remedy
Junction Board
CN 1
Rotary Scale
Photo Coupler
Check Point 1
Check Point 2
Содержание Stylus Color C70
Страница 1: ...EPSONStylusColorC70 C80 Color Inkjet Printer SEIJ01 004 SERVICE MANUAL ...
Страница 5: ...Revision Status Revision Issued Date Description A July 31 2001 First Release ...
Страница 9: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Страница 35: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Страница 60: ...C H A P T E R 3 TROUBLESHOOTING ...
Страница 96: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Страница 137: ...C H A P T E R 5 ADJUSTMENT ...
Страница 169: ...C H A P T E R 6 MAINTENANCE ...
Страница 182: ...C H A P T E R 7 APPENDIX ...
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