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Chapter 3
Operation and Troubleshooting
Indicative Lights
The MP-4000 TH printer will flash indicative messages through the Information LED (
i). The
information may vary from the printer ready status to critical error warnings, which can lead to
module replacement to correct a specific issue.
On the chart below, you can see the messages given by the printer and the ways to correct the
most common errors that may occur.
Colors
LED
Status
Light Signs Meaning - Procedure
On Ready to Print
Green = OK
Blinking Ready to Print, but low on paper.
On Open Cover - Close the Cover
Blinking 1 time No Paper - Insert a new paper roll
Blinking 2 times Overheated Print Head - Wait to Print
Blinking 3 times
Cutter Error - Open the cutter to remove
jammed paper (ERS)
Yellow
Recoverable error
Blinking 4 times
Communication Error / Command
Disregarded - Check Programming Mode
Blinking 1 time RTOS Error
Blinking 3 times RAM Memory Error
Blinking 8 times Print Mechanism Error
Blinking 11 times Low DC tension sent by the power source
Red
Unrecoverable
Error
Blinking 12 times Cutter Initialization Error
Recoverable Error - Yellow Information LED
Recoverable Errors are the ones that the user can usually solve without technical intervention
or module replacement. In some situations these errors can be persistent and technical
assistance intervention is required to fix it. These errors are:
Yellow LED On - Open Cover
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