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Chapter 4: Using the Printer30
A799 Two-Color Thermal Receipt Printer: User Guide A799-UG00001 Rev. D 11/2012
Printing issues
Condition Possible Causes What to Do Where to Go
Colored stripe on Paper is low Change the paper Chapter 3: Setting up the printer,
the receipt “Load or change the receipt paper”
(See page 12)
Receipt does not come Paper is jammed Open the receipt cover,
out all the way inspect the knife, and clear
any jammed paper
Printer starts to print, but Paper is jammed Open the receipt cover,
stops while the receipt is inspect the knife, and clear
being printed any jammed paper
Receipt is not cut Paper is jammed Open the receipt cover,
inspect the knife, and
clear any jammed paper
Print is light or spotty Paper roll loaded Check that the paper Chapter 3: Setting up the printer,
incorrectly is loaded properly “Load or change the receipt paper”
(See page 12)
Thermal printhead is dirty Use recommended Chapter 5: Paper and Supplies,
thermal receipt paper “Ordering thermal paper”
(See note below.) (See page 29)
Variations in paper Increase print density in Contact your authorized service
“Set Hardware Options” representative or refer to Chaper 4:
of printer Conguration Using the Printer, “Conguring the
Menu to 110% or 120% printer”
as needed (monochrome USE CAUTION when changing
printer only) settings (See page 23)
Color print is light Variations in paper Increase energy level of Chapter 4: Using the Printer,
printhead in “Color “Conguring the printer” page 20
Density Adj” of the and the Programming Guide
printer conguration menu
Inconsistent printing, Paper type used and Print diagnostic form and Chapter 4: Using the Printer,
no two-color print paper type do not match verify setting paper type “Conguring the printer” page 20
setting to type 0, 1, 4, or 5 and the Programming Guide
Vertical column of print This indicates a serious Stop using the printer Contact your authorized
is missing condition with the printer service representative
electronics
One side of receipt is This indicates a serious Stop using the printer Contact your authorized
missing condition with the printer service representative
electronics
Note: If paper has been used which is not on the CognitiveTPG recommend paper list, resulting in a dirty printhead, the
printhead may require cleaning prior to switching back to CognitiveTPG recommended paper. See Chapter 5 for a list.
If non-recommended paper is used over an extended period, attempting to clean the printhead will have little eect
on print quality.
Do not try to clean within the printer except as noted in the A799 Service Guide, Chapter 4: Cleaning and
Maintenance.