Programming Information; Printer Maintenance; Print Head Cleaning Instructions - Extech Instruments APEX 2 User Manual


Refer to Table 4 for the description of the Magnetic Card LED Status.
LED indicator
Green
Red

3.7 Programming Information

For programming information, please refer to the Developer's Manual.
Note: System Developers: Please refer to the APEX 2 developer's manual for further details.
Other features may be available as described in the programmer's manual

4. Printer Maintenance

4.1 Print Head Cleaning Instructions

The print head and platen roller may need cleaning after printing a number of rolls of paper,
when new supplies are loaded, or when voids in the printout are apparent.
Do not use sharp objects to clean the print head. This may damage the printer
and require service or repair

Open the paper door by pressing the Paper Door Release Button as shown in
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: Another cotton swab moistened with isopropyl alcohol may be used to clean the platen.
Turn the platen roller with your finger and run the cotton swab or dry cloth across it. Ensure that
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 build-up

Moisten another cotton swab and rub the swab across the tear bar to remove build-up
Note: Dust build-up may occur depending on the environment and the quality of the paper
supply used. If this occurs, use a can of compressed air to blow dust and paper debris out of the
printer.
APEX2 User's Guide
Table 4 - Magnetic Card LED Indicator
State
ON
OFF
ON
Rev 1.0
Status
Ready/waiting for card to be swiped.
Good swipe - Card data read OR
Card not ready to be swiped.
Error reading card's data.
Figure 6.
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