55
No.
14
15
16
17
18
19
20
Error detection contents
The door interlock
switch is detected.
The cleaning roller
interlock switch is
detected.
The cassette interlock
switch is detected.
Ink and retransfer
cassette switch are
connected in series.
Vth (Voltage supplied to
the thermal head ) is
not determined.
Circuit trouble is
detected.
The temperature of the
retransfer roller is detected
with a thermistor, and an
error is caused when this
temperature exceeds about
240
°
C. When this
temperature is exceeded,
the thermostat operates
and the circuit is cut.
The retransfer roller
temperature is detected
with a thermistor.
When the temperature
has dropped about
10
°
C from READY.
Treatment contents
1) Check that the door interlock switch is pressed normally.
When it is pressed normally, the cooling fan on the left
side of the printer operates.
2) Check the mechanism pressing the switch.
1) Check that the cleaning roller interlock switch is pressed
normally.
2) Check the mechanism pressing the switch.
1) Check that the cassette interlock switches for ink and
retransfer film both are pressed correctly.
2) Check the mechanism pressing the switch.
1) Check that the connector is connected correctly to the thermal head.
2) When Vth power can not be put out from the power supply unit.
3) When the A/D circuit of the analog power circuit board is
defective.
This is a defect of the heater control system.
1) Analog power circuit board: Defect of the circuit
performing A/D conversion for the thermistor.
2) Heater protector circuit board.
3) Heat roller unit: Defective thermistor etc.
This is a defect of the heater control system.
1) Analog power circuit board: Defect of the circuit
performing A/D conversion for the thermistor.
2) Heater protector circuit board.
3) Retranser roller unit: Defective thermistor etc.
Thermistor: Measure with a tester - about 220 k
Ω
at
normal temperature and about 1 k
Ω
at 200
°
C.
4) Measure the thermostat with a tester and confirm a
value of about 2 or 3
Ω
. The resistance is infinite in case
of abnormalities.
5) Defective power supply unit.
Check for a wire break of the thermistor.
1) Thermistor: Measure with a tester - about 220 k
Ω
at
normal temperature and about 1 k
Ω
at 200
°
C.
2) When the thermistor is normal: Defective analog power
circuit board, CPU circuit board.
Exchange parts
* Door interlock
switch,
Main circuit board
* Door
* Cleaning roller
interlock switch,
Main circuit board
* Cleaning roller unit
* Cassette interlock
switch, Main circuit
board
* Ink cassette,
Retransfer
cassette
* Thermal head
* Power supply unit
* Main
circuit board
* Main circuit
board
* Heater protector
circuit board
* Heat roller unit
* Main
circuit board
* Heater protector
circuit board
* Heat roller unit
*Heat roller unit
* Power supply unit
* Heat roller unit
* Main circuit board
Error item
Door open
The printer door is
open.
No Cleaning Ro.
There is no
cleaning roller.
No Cassette
There is no
cassette.
Hardware
TR Overheat
Retransfer roller
overheat
TR Broken
Defective retransfer
roller
TR Sensor Broken
Defective retransfer
roller thermistor
1) When the temperature
does not rise even after
about 30 sec. have passed
since heater ON.
2) When the temperature at
the time of READY is
about 40
°
C lower than the
set temperature.