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Adept Lynx Platform User's Guide, Rev D
Page 107 of 126
Chapter 8: Maintenance
Front Sonar Units
The front sonar units are housed in the bumper. They can be replaced, individually, without
removing the bumper or its cover. No tools are required for this replacement. All four sonar
units are identical, although two are used as emitters and two as receivers, in pairs.
1. Reach under the bumper cover, and compress the two flat springs holding the sonar
unit.
Push it out of the bumper cover, away from the chassis, to remove it from the cover.
2. Unscrew the connection between the sonar cable and the sonar unit's lead.
Ensure that both the connector and lead are labeled, and match. If not, label them.
3. Connect the sonar cable to the new sonar unit's lead.
4. Tuck the cable and lead through the sonar unit's hole in the bumper cover, and press
the new sonar unit through the hole, from the outside.
Sonar Controllers
The sonar controllers are located in the payload bay. One is used for the standard front/rear
sonar. A second controller is only present if you purchased the optional payload structure
sonar kit.
1. Move the payload structure out of the way, so you have access to the payload bay.
2. Locate the sonar controller that you need to replace.
Payload structure sonar controller
l
The payload structure sonar controller is plugged into the Sonar 2 connector on
the Lynx core. This connector is accessible from the payload bay.
l
The controller will be on one side of the payload bay, screwed into the payload
bay deck with two screws.
a. Unscrew the controller from the payload bay deck by removing two screws.
Retain the screws for mounting the replacement controller.
b. Unplug the larger cable from the controller (coming from the Lynx core).
c. Unplug the eight sonar units from the sonar controller.
These are the smaller cables that go to the individual sonar units.
Make sure these are labeled, and are tied up so they can't slip into the chassis.
d. Replace the old controller with the new one.
e. Plug the eight sonar unit cables into the new controller.
Ensure that the cable labels match the controller labels.
f. Plug the cable from the Lynx core into the new controller.