R920-F - Replacing Polara Model-X Button - Carmanah E Series Manual

9.0 R920-F – Replacing Polara Model-X Button
Overview:
For systems using the Polara Model-X pushbuttons and the separate XAV control board, the control signal for
activating the voice message is provided by a voltage on the RRFB light bar circuit. For systems using the
iNX/iDX, this control signal now is produced by a digital output on the Carmanah EMS, labelled "EXT 2" on the
EMS circuit board (see schematic in
The following section applies to R920-F systems with a pre-existing Polara Model-X pushbutton and XAV
pushbutton control board.
1. De-energize system by disconnecting both system fuses.
2. Remove 4 screws securing EMS cover.
3. Rotate EMS cover to expose EMS PCBA and wiring. Remove cable ties as required.
4. Remove the RF connector at the SMA connector on the radio module. A 5/16" open end wrench may be
required.
5. Disconnect existing pushbutton, light bar(s), beacons, or LED signs, batteries and solar panel.
Removal of the existing XAV control board is optional, however; all connections from the XAV
control board to the system should be removed, including DC power.
Photograph or take careful note of all existing connections on EMS.
6. Remove existing EMS PCBA.
The light pipe at the top off the PCB assembly can be damaged during the removal of the EMS.
Lift the EMS gently from the bottom edge and slide down before lifting up and out of enclosure.
7. Install replacement EMS PCBA provided with retrofit kit.
8. Reconnect antenna lead.
9. Route iNX cable through the large opening on the lower front edge of the EMS cover.
10. Splice Battery (+) and Battery (-) along with the BLUE/BLACK conductor into the connectors on the iNX
harness.
11. Insert the ORANGE, BROWN, and YELLOW conductors as shown below:
Carmanah Technologies Corp. | 250 Bay St, Victoria, BC V9A 3K5, Canada | 1.250.380.0052 |
Section 5.0).
POLARA INX/IDX RETROFIT GUIDE
customersupport@carmanah.com | carmanah.com
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