AMT Datasouth M7plus - Manual (Page 13)

M7 SERIES
Thermal Printer Service Manua l
43 43
LCD panel is dark and
keys are not working.
* The cable between main PCB and LCD
panel is loose.
* Check if the cable between main PCB and LCD
is secured or not.
LCD panel is dark but
the LED’s are light.
* The printer initialization is unsuccessful.
* Turn OFF and ON the printer again.
* Initialize the printer.
LCD panel is dark and
LED’s are lit on, but
the label is feeding
forward.
* The LCD panel harness connector is
loose.
* The LCD panel harness connector is plugged
upside down.
Ribbon encoder
sensor doesn’t work.
* The ribbon encoder sensor connector is
loose.
* Fasten the connector.
Ribbon end sensor
doesn’t work.
* The connector is loose.
* The ribbon sensor hole is covered with
dust.
* Check the connector.
* Clear the dust in the sensor hole by the blower.
Peel sensor is not
working.
* Peel sensor is not located on the correct
position.
* The connector is loose.
* Make sure that the media goes through the Peel
sensor.
* Plug the connect cable correctly.
Cutter is not working. * The connector is loose. * Plug in the connect cable correctly.
Label feeding is not
stable (skew) when
printing.
* The media guide does not touch the
edge of the media.
* If the label is moving to the right side, adjust the
label guide to left.
* If the label is moving to the left side, adjust the
label guide to right.
Skips labels when
printing.
* Label size is not specified properly.
* Sensor sensitivity is not set properly.
* The media sensor is covered with dust.
* Check if label size is setup correctly.
* Calibrate the sensor by Auto Gap or Manual Gap
options.
* Clear the GAP/Black mark sensor by blower.