Maintenance
Sensor Adjustment Procedure
• Make sure printer power is turned off
• Turn ON all four DIP switches
• Open the printer and insert the reference paper (Part No. 501-000059)
• Turn on printer power
• Wait for the LED to flash (On - 100ms, Off - 1 sec.). You may need to wait 10 seconds
• Open the printer, remove the reference paper, and close the printer
• Turn off DIP switch #1
General Operation and Troubleshooting
Upon receiving a message from the host, the printer moves the paper into position and prints
the appropriate data which may include bar code information.
A sensor in the hopper section indicates to the host when the paper supply is low. There is
also a sensor in the head that informs the host when the hopper is empty.
If there is a paper jam, the printer sends a message to the host and the host signals a paper
jam. The only time a service technician becomes involved with the printer is when it needs
paper (see “Loading Paper” on page 6),
when there is a paper jam, or when there
is a software update.
Cleaning
Use compressed air to clean any debris
from the hopper area, then use a lint-free
cloth and 25% alcohol to clean the head
area indicated in the photograph.
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