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5501 Series Audio Console Firmware
IMPORTANT: The main circuit board used in 5501 series consoles has changed to accommodate
newer components beginning with version 2.0. The version number is shown with 2 bold numbers
below the bar code on the serial number label on the bottom of the console. The EPROM's used in
version 2.# consoles are not compatible with earlier versions of consoles and vice versa - do not try
to swap these EPROM's. Version 2.# consoles use revision 2.# firmware and version 1.# consoles
use revision 1.# firmware. The firmware revision is shown on the serial number label. Note that
numbers on the EPROM itself are engineering numbers. These numbers differ from the console
firmware revision but do begin with the same number, 1 or 2.
The following changes apply to all 5501 series consoles that have revision 1.1 or 2.# firmware. Those
revisions function the same - the only difference is the actual board design as mentioned in bold above.
* An acknowledgement beep will occur each time any key is pressed on the keypad.
* There will be a significant increase in outgoing volume to the customer lane. This can result in not
needing to be quite as close to the console microphone with the same matrix settings.
* This firmware supports the latest version of the 5098 Auto-Greeter Board with an ISD1790 chip.
Consoles with 1.1 or 2.# firmware have much higher outgoing volume than consoles with 1.0 firmware.
If they are mixed on the same system the outgoing volume must be matched by adjusting the mic gain
pots. The pot is accessible by puncturing the black dot on the label on the bottom of the console. Use
either of the following methods.
Decrease the mic gain on the revision 1.1 or 2.# consoles by turning the pot fully clockwise. That
should closely match the gain from the revision 1.0 consoles if their pot is at the default mid range.
Increase the mic gain on the revision 1.0 consoles to maximum by turning the pot fully counter-
clockwise. While using a revision 1.0 console, check the outgoing volume level at each customer
lane and lower the setting for the speaker gain pots on the matrix to compensate for the increased
mic gain. Then reduce the mic sensitivity on the revision 1.1 or 2.# consoles by turning the pot
clockwise a little at a time and compare the outgoing volume with the revision 1.0 consoles. The
goal is to match the volume from both versions.
Firmware Installation
Use ESD precautions when handling the board and EPROM since both are static sensitive.
1. Unplug the matrix cable from the console so no power is applied.
2. Remove the (4) philips head screws from the bottom of the console.
3. Carefully separate the top of the console from the bottom using caution so no damage occurs to the
keypad ribbon cables. Unplug the two ribbon cable connectors along with the LED, microphone &
speaker connectors from the main board and set the top of the console aside. IMPORTANT – When
unplugging the ribbon cable connectors, DO NOT pull on the ribbon cables themselves as damage
will occur. Also make sure to avoid sharp bends or creases to the ribbon cables during handling.
4. Remove the main board from the console – 3 screws hold it in place. Carefully replace the EPROM
making sure it is completely seated and no pins are bent and then re-install the board in the console.
DO NOT attempt to replace the EPROM while the board is installed since the board could be
damaged from flexing while pressing the EPROM into the socket.
5. Plug the speaker, microphone, LED & keypad ribbon cable connectors back onto the main board
(it's easiest to do the ribbon cables last) and re-install the top of the console to the bottom. The rear
panel of the console must slide into a slot on the top cover for a proper fit.
6. Make sure no wires are sticking out any side of the console and then re-install the (4) screws on the
bottom.
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