HP Engage One Column Printer User Guide

Table 4-2 Printer issues conditions, causes, and solutions (continued)
Condition Possible causes Possible solutions Where to go for more
information
Thermal printhead is dirty. Use recommended thermal
receipt paper and clean the
printhead with 99% isopropyl
alcohol.
Always clean the printhead after
using unrecommended paper.
See Thermal paper
specications on page 7.
Variations in paper. Increase print density in Set
Hardware Options of printer
conguration menu to 110% or
120% as needed.
Contact your authorized HP
service representative.
See Monochrome paper print
density on page 10.
Vertical column of print is
missing.
This indicates a serious
condition with the printer
electronics or missing dot on
printhead.
Stop using the printer. Contact your authorized HP
service representative.
One side of receipt is missing. This indicates a serious
condition with the printer
electronics.
Stop using the printer. Contact your authorized HP
service representative.
NOTE: Using unrecommended paper might damage the printhead and void the warranty.
Printer does not function
Table
4-3 Loss of printer function issues conditions, causes, and solutions
Condition Possible causes Possible solutions Where to go for more
information
Printer does not function when
turned on and LED is o.
Power is not plugged in. Check that the host or power
supply is getting power.
Printer does not function when
turned on and LED is blinking.
Receipt cover is not fully closed. Close and latch the receipt cover.
Printer stops functioning. Printhead has overheated. Allow the printhead to cool
down.
See Preventing overheating of
the printhead on page 6.
Printer is in energy-saving
mode.
Press the paper feed button to
revive the printer.
See Energy-savings mode
on page 10.
Printer does not open. Receipt cover is stuck. Release the latch failsafe. See Latch failsafe on page 4.
Paper jams
Preventing a paper jam
There are several common causes of paper jams.
To prevent a paper jam, follow these best practices:
Printer does not function 13