Error Detectionflow Chart - Mitsubishi Electric CP-D70DW Service Manual

ERROR DETECTION FLOW CHART
■
Flowchart of the error diagnosis in the electrical system
Error occurs.
Yes
Does Printing start?
No
Is the power cord
No
Is the POWER LED
connected correctly?
illuminating?
Is the POWER button
pushed ON?
Check the power cord and
Yes
the POWER button.
Yes
Is the ALARM LED
Isn't the door open?
illuminating or blinking?
No
No
Is the PAPER/RIBBON
Are the PAPER and INK
LED illuminating or
RIBBON correctly installed?
blinking?
Yes
Yes
Is the POWER LED
blinking?
No
No
Is the USB cable
connected correctly?
Yes
The PCB-DIGITAL or the
PCB-DRIVE is broken down.
Yes No
Is the FAN MOTOR(M8)
rotating?
Yes
No
Or the PCB-POWER is broken down.
Yes
Close the door.
No
See "INDICATIONS ON THE FRONT PANEL AND
COUNTERMEASURES".
No
Install PAPER and INK RIBBON correctly.
Yes
Or the PCB ANTENNA is broken down.
Wait for the printer to cool down or warm up.
Connect the USB cable correctly.
No
Did the printer stop
during printing?
Yes
No
The PCB-POWER is
Is the ALARM LED
broken down. blinking or illuminates?
Yes
No
Isn't the door open?
Yes
See "INDICATIONS ON THE FRONT PANEL AND
COUNTERMEASURES".
Is the print result poor?
Yes
Is the built-in test
The PCB-DIGITAL or the
pattern printed
PWB-DRIVE is broken down.
correctly?
No
Are the connectors of the thermal
Close the door.
head connected correctly
(both on the PCB and head sides)?
Yes
Is the density adjusted
correctly?
Yes
Something is wrong with the
thermal head.
Printing is performed correctly.
No
For other causes, see the flowchart of
the error diagnosis in the mecha
system.
Error may have occurred in data
transfer from PC, or the internal
Yes
memory may not be controlled
correctly.
Check the PC state, the circuit around
IC7000.
No
Connect connector
correctly.
No
Adjust density correctly.