Access keyboards ATB 420/421 Multi-Function Keyboard Product Specification and Service Guide
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Rev 6
Access Keyboards 2001 & 2002 - All rights reserved Page 15 of 37
3.2
Firmware Upgrade
Occasionally Access Keyboards will release updated firmware. The firmware of the ATB420/421
can be upgraded in the field without needing to dismantle the ATB420/421 units
Instructions are supplied with the Firmware upgrade.
3.2.1 Downloading new Firmware to ATB420/421 using the Access ProgBox
Shipping List
The following items are supplied to allow the ProgBox to be used in stand-alone mode:
AKP0009552
ProgBox
AKP101 REV C
AVR Programming Cable
AKP109 REV A
S/2 Power Adaptor
5KBD884701
ull Modem Cable (9 way D F to 9 way D F)
PSU5V4AUNIV
5V Power Supply
Introduction
This document details how to reload an ATB420/421 keyboard from a ProgBox, which has been
configured to do a complete reload of all the keyboard firmware.
Connecting The ProgBox
Field Mode – Keyboard connected to a PC
(Note the illustration below shows the connection of the cables. It is not necessary to put the
keyboard upside down)
Arrow on
label points to
rear of
keyboard
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