Japan CBM Corporation CMP-10, Service Manual

Page: 17 / 41

CMP-10 Service Manual
CMP-10 Rev. 1.00 P 17/41 Date: 2002.07.25
Phenomenon
Low print quality
Too much ink blot
Blurred characters
Cause
Faulty printing paper
Faulty battery pack
Foreign substance adhered
to the thermal head or
platen roller
Faulty printing paper
Worn platen roller
Check Method
Check whether or not
the specified printing
paper is used.
Check whether or not
the specified battery
pack is used.
Check the thermal head
and platen roller for any
adhered foreign
substance.
Check whether or not
the specified printing
paper is used.
The platen roller is worn
out and slips easily.
Repair Method
Replace with the
recommended paper or
its equivalent.
Use the specified
battery pack.
Dip a cotton swab or
soft cloth in ethyl
alcohol and wipe off the
foreign substance.
Replace with the
recommended paper or
its equivalent.
Replace the platen roller
unit.
* If the printer continues to print for a long time, the printed characters become thicker. If printing is
suspended and restarted, print concentration will change slightly. Print density becomes lower if used at
a low temperature.
Phenomenon
The printing paper is not
fed or fed unproperly.
Cause
Faulty connection of motor
connector
Faulty battery pack
Faulty motor body
Faulty paper feed
Foreign substance in the
gear
Broken gear
Faulty motor body
Check Method
Check the motor
connector for its
connection.
Check whether or not
the specified battery
pack is used.
Use a tester or
oscilloscope to measure
a supply voltage and
waveform.
Check whether or not
the printing paper is
jamming or torn and
caught in a paper path.
Check the motor gear
for any foreign
substance.
Check whether or not
the motor gear is
broken.
Use a tester or
oscilloscope to measure
a supply voltage and
waveform.
Repair Method
Connect the connector
properly.
Use the specified
battery pack.
If the supply voltage
and waveform are
normal, replace the
motor (printer
mechanism).
Remove unnecessary
printing paper and set
properly.
Remove the foreign
substance.
Replace the motor
(printer mechanism).
If the supply voltage
and waveform are
normal, replace the
motor (printer
mechanism).
* Paper Feed Failure
A printing paper feed
motor does not work or
malfunctions.