Service manual

6-1
CD-S500 Series
6-1 Troubleshooting List
Symptom Check Action
1 Paper jam Check for a jam at the paper ejection
opening.
If you cannot open the rear cover,
make a check for 2.
Remove all the jammed paper. Remove the roll
paper from the printer and put it back again.
2 Rear cover does not
open
Check to see if the blade of the auto
cutter is protruding.
Insert a Phillips screwdriver (+) into the cutter
lock release feed hole on the printer and turn it
clockwise or counter-clockwise.
Rotate the screwdriver while watching the paper
ejection opening and stop turning it when both
ends of the blade are fully retracted.
3 Ribbon is not fed
correctly
Turn the knob on the ribbon cassette. After turning the knob until the ribbon is fed
smoothly, reset the ribbon cassette.
If you cannot turn the knob, the ribbon may be
jammed inside the cassette. If the situation does
not improve, replace it with a new ribbon cassette.
4 The paper is not cut Check to make sure that the rear cover
and front cover are closed.
If either cover is open, close it.
5 Power cannot be turned
on
Check to make sure that the power
cord and AC adapter plug are correctly
inserted.
Insert the power cord and AC adapter plug
correctly.
Check to make sure that the power is
supplied to the outlet.
Supply the power to the outlet.
Check the power cord for
disconnection.
Replace the power cord.
6 Carriage operates but
there is no print made
Check to make sure that the print head
FPC is correctly inserted into the
connector.
Insert the print head FPC correctly into the
connector.
Check the print head FPC for
disconnection.
If disconnected, replace the print head.
7 Some printing pins do
not print
Check to make sure that the FFC that
connects between the print head,
connector and main PCB is correctly
inserted into the connector.
If the FFC is correctly inserted and the situation
does not improve, replace the print head or the
main PCB.
8 Print is generally too
light
Check to see if ink on the ink ribbon is
running out.
If ink is running out, replace the ink ribbon.
Check the head gap. (If it is too wide,
print will become lighter.)
Adjust the head gap.
CAUITON
Do not try to force the rear cover
to open. If you do so, the printer
will be damaged and you will be
cut by the blade.