Epson Stylus PHOTO 950 Service Manual page 62

EPSON Stylus PHOTO 950
Table 3-6. Countermeasures when a paper out error occurs
Step Check Point
12 Has one of the Check both the PF grounding wire and the EJ grounding
grounding wires wire. If a wire is not in the correct position, pull it out and re-
become disconnected install it in the correct position.
and is blocking the
[PF Grounding Wire]
paper path?
[EJ Grounding Wire]
13 Is the surface of the If the surface is dirty, remove the linear scale and clean it
linear scale that with a cloth moistened with alcohol.
passes through the
underside of the
carriage contaminated
with paper dust?
TROUBLESHOOTING
Remedy
PF Grounding Wire
EJ Grounding Wire
Dust or Smeared Points
Table 3-6. Countermeasures when a paper out error occurs
Step Check Point
14 Is the inside of the CR
encoder on the
underside of the
carriage blocked with
paper or dust? Also, is
the position of the
linear scale correct?
15 Is the FFC
disconnected from
connector CN1 on the
circuit board
underneath the
carriage, or does it
look to be okay but
when you try to push
it in does it feel as if it
is slightly loose?
Overview
Remedy
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.
In the same way as above, check the condition of the linear
scale. Ideally the linear scale should be in the middle of the
encoder, but it is okay if the carriage does not touch either
end when it is moved manually.
CR Encoder
Linear Scale
CN1
Junction Board
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.
Revision A
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