User`s manual

UPGRADING FIRMWARE
AXIS AX-3 Cobra+ Technical Reference 157
APPENDIX D
UPGRADING FIRMWARE
Does not apply to the Axis 330 Cobra.
The AX-3 Cobra+ firmware can be upgraded by replacing the EPROM chip located
inside the unit. To replace the EPROM, proceed as follows:
1. Turn off the AX-3 Cobra+ by removing the power supply connector.
2. Disconnect the system and printer connections.
3. Unscrew the two screws on the back panel.
4. Gently pull the back panel. The attached circuit board with the EPROM will slide
out of the box.
5. Gently remove the EPROM from its socket using a flat screwdriver. It is very
important to insert the screwdriver from the edge facing the front panel. See above
illustration. If the screwdriver is inserted the wrong way, the battery could be
short-circuited, causing permanent damage to the unit.
Caution: The AX-3 Cobra+ circuit board is static-sensitive.
Mishandling may cause permanent damage to its components. Make
sure to take all recommended precautions related to
static-sensitive devices.