Faulty Printing - Citizen iDP3240 Service Manual

5.2.2 Faulty printing

Phenomenon
Printer doesn't
print.
Print is weak.
Printing smear
is severe.
Printing quality
is low.
Cause
Improper power supply.
Improper mounting of
the control board.
Improper attachment of
platen roller.
Thermal head unit is
defective.
Improper power supply.
Paper other than
recommended is used.
Thermal head unit is
defective.
Supplied voltage is low.
Foreign matter is
adhering to the thermal
head.
Improper power supply.
Foreign matter is
adhering to the thermal
head.
Improper recording
paper.
Supplied voltage is low.
Check Method
Check if designated AC
adapter is used.
Check the mounting of
the control board and the
condition of its
connections.
Check the attachment of
the platen roller. Check
wire springs for
deformation or warp.
Check if designated AC
adapter is used.
Check the supplied
voltage using a tester.
Check if foreign matter
is adhering to the
thermal head.
Check if designated AC
adapter is used.
Check if foreign matter
is adhering to the
thermal head.
Check if recording paper
matching specifications
is used.
Check the supplied
voltage using a tester.
27
iDP3240 SERVICE MANUAL
Repair Method
Use designated AC adapter.
Mount the control board
correctly.
Attach the platen roller
correctly. Replace deformed
wire springs.
Replace the thermal head
unit.
Use designated AC adapter.
Replace with recording paper
within specifications.
Replace the thermal head
unit.
Operate using a voltage
within the prescribed range.
Remove foreign matter using a
cotton swab or soft, lint-free
cloth moistened with ethyl
alcohol.
Use designated AC adapter.
Remove foreign matter using a
cotton swab or soft, lint-free
cloth moistened with ethyl
alcohol.
Replace with recording paper
matching specifications.
Operate using a voltage within
the prescribed range.