Service manual

SERVICE MANUAL MASTER FILE
ENGLISH
Rev. A (1997/05/07)
3-7
3. Printing is faulty during self-test, but carriage operation is normal.
START
Is AC input volta
g
e normal?
120V version: 85 - 138V.
230V version: 187 - 276V.
NO
YES
Use the correct AC input volta
g
e.
No fluctuation from AC volta
g
e ran
g
e is
permitted.
Holdin
g
down the LF/FF or
Load/E
j
ect switch, turn on the
printer to start self test printin
g
.
Is printin
g
executed?
Are all connectors connectin
g
the
C229MAIN board and printer
mechanism?
NO
YES
Reinsert the connectors correctl
y
.
Is the fault solved?
END
NO
YES
Is the vertical
line ali
g
ned?
Is an
y
dot
missin
g
?
Perform the Bi-D
ad
j
ustment.
Is the fault solved?
END
NO
YES
Verif
y
FFCs are properl
y
inserted
and have continuit
y
. If the
y
are not
defective, replace the printhead.
Ad
j
ust the Platen Gap.
Is the fault solved?
END
NO
YES
Replace the C229MAIN
board.
NO
NO
YES
YES
NO
YES
YES
END
Figure 3-6. Flowchart (3)