Appendix A: Alternative Led Patterns; Setting Printer To Have Alternative Led Patterns - CognitiveTPG A799II User Manual

Appendix A: Alternative LED Patterns

Setting Printer to Have Alternative LED Patterns

The A799II Printer can be set to show specific patterns of blinking for easier means to troubleshoot. To set the printer this
way, send the following command: 1F 03 50 00 02.
After a reset, the printer's LED patterns should reflect the table below.
To set back to the original patterns, send 1F 03 50 02 02 and reset the printer.
Condition
LED blinks on once,
off remainder
LED blinks on twice,
off remainder
LED blinks on three times,
off remainder
LED blinks on four times,
off remainder
LED blinks on five times,
off remainder
LED blinks off once,
on remainder
LED blinks off twice,
on remainder
LED blinks off three times,
on remainder
LED blinks off four times,
on remainder
LED blinks quick, steady
(on power up)
LED blinks slow, steady
4/2016 4/2016
Possible causes
Knife unable to home
Flash programming
Paper out
Black dot sensor error
Receipt cover open
Paper is low
(if paper low sensor is
installed)
Voltage low
Voltage high
Thermistor out of range
Invalid firmware
Max power setting wrong
Other problems may
be indicated
A799-2UG0000 Rev. C A799-2UG0000 Rev. C
Appendix A: Alternative LED Pattern
What to do
Stop using the printer
Allow printer to finish
programming
Load a new paper roll
Make sure paper has black If on power up, contact your
marks and is loaded
correctly
Close the cover
Load a new paper roll
Wait for voltage to recover If on power up, contact your
or try new power supply
Wait for voltage to recover If on power up, contact your
or try new power supply
Allow the printhead to
cool down
Load new firmware
Change the setting
Stop using the printer
A799II Two-Color Thermal Receipt Printer: User Guide A799II Two-Color Thermal Receipt Printer: User Guide
Where to go for more information
Contact your authorized service
representative.
Chapter 3: Setting up the Printer,
"Load or change the receipt paper"
(See page 12)
authorized service representative.
Chapter 3: Setting up the Printer,
"Load or change the receipt paper"
(See page 12)
authorized service representative.
authorized service representative.
Chapter 4: Using the Printer,
"Preventing overheating of the
printhead" (See page 26)
If on power up, contact your
authorized service representative.
Chapter 4: Using the Printer,
"Max Power Setting" (See page 26)
Contact your authorized service
representative
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