TSC Printronix Alpha-40L Instruction Manual page 70

SD card is unable to use
Poor Print Quality
Missing printing on the left or right
side of label
Irregular printing
Skip labels when printing
RTC time is incorrect when reboot
the printer
LCD panel is dark and keys are not
working
◼ SD card is damaged.
◼ SD card doesn't insert correctly.
◼ Media is loaded incorrectly
◼ Dust or adhesive accumulation on the print
head.
◼ Print density is not set properly.
◼ Print speed is not set properly.
◼ Print head element is damaged.
Wrong label size setup.
◼
◼ The printer is in Hex Dump mode.
◼ Label size is not specified properly.
◼ Sensor sensitivity is not set properly.
◼ The media sensor is covered with dust.
◼ The battery has run down.
◼ The cable between main PCB and LCD
panel is loose.
◼ Use the supported capacity SD card.
◼ Insert the SD card again.
◼ Reload the supply.
◼ Clean the print head.
◼ Clean the platen roller.
◼ Adjust the print density and print speed.
◼ Run printer self-test and check the print head test pattern
if there is dot missing in the pattern.
◼ Change proper media roll.
◼ Make sure the print carriage is closed properly.
Set the correct label size.
◼
◼ Turn off and on the printer to skip the dump mode.
◼ 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.
◼ Check if there is a battery on the main board.
◼
Check if the cable between main PCB and LCD is
secured or not.
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