Printer Maintenance; Print Head Cleaning Instructions; Charging The Printer Battery - Extech Instruments S4000T User Manual

4. Printer Maintenance

4.1 Print Head Cleaning Instructions

You may need to clean the print head and platen roller after printing a number of rolls of paper,
whenever you load new supplies or when you see voids in the printout.
Do not use sharp objects to clean the print head. This may damage the printer
and require service
Open the paper door by pressing the Paper Door Release Button on the top cover as shown in
Figure 5. The paper supply door will pop up.
Remove the paper roll.
Moisten a cotton swab with isopropyl alcohol and clean the print head
Clean the platen roller with a dry cloth or small brush
Note: You can also use another cotton swab moistened with isopropyl alcohol.
Turn the platen roller with your finger and run the cotton swab or dry cloth across it. Make sure
the platen roller is clean all the way around.
Moisten another cotton swab with isopropyl alcohol. Rub the swab across the black mark
sensor to remove any build-up
Moisten another cotton swab and rub the swab across the tear bar to remove any build-up
Note: You may experience dust build-up depending on the environment and the quality of the
paper supply you use. If this occurs, use a can of compressed air to blow dust and paper debris
out of the printer.

4.2 Charging the Printer Battery

The printer battery is charged using the wall mounted charger provided.
Follow these steps to charge the battery pack.
Note: Maker sure the printer and all LED's are OFF before charging battery.
Plug the charger into an appropriate wall socket; then plug the charger line cord into the
adapter jack on the side of the printer. Refer to
The yellow CHARGE LED will illuminate, to indicate battery is charging.
The Charge LED turns off when battery cartridge is fully charged. It takes about 180 minutes
to fast charge the battery cartridge.
To insure full charge, printer should not be operated while the battery is charging.
S4000T User's Guide
Figure 1 for details.
Rev 1.2 22