TITLE
Model
DOCUMENT NO.
PAGE
CN70 Service Work Instructions
CN70A,CN70E
SWICN70-000
Page
15
of
45
OPERATION:
Core Assembly
The core assembly will need to be removed from the top housing in order to access and/or replace assemblies
attached to the magnesium frame, to replace the magnesium frame, or to replace the top housing assembly.
Tools Required
Description
Part Number
T10 Torx driver
Non conductive pry tool
3M SP3010
Removal
1. Remove the bottom housing assembly (refer to Bottom Housing operation).
2. Using a non-conductive pry tool release the magnesium frame tabs from one side of the top housing and rotate the
core assembly out of the top housing.
NOTE: Units without a WAN radio have the 802.11 antenna located in the top housing and will have a coax cable
from the top housing assembly connected to J4 on the main logic board. This will need to be disconnected before
removing the core assembly from the top housing assembly.
Installation
1. Insert the magnesium frame tabs along one edge with their mating slots in the top housing. Do this at a high
enough angle to prevent the touch panel gasket from dragging against the top housing and thus deforming it.
2. Using firm pressure push down along the opposite edge of the magnesium frame snapping its tabs into their mating
slots in the top housing. Be careful not to damage any internal assemblies with excessive force during this procedure.
3. On non-WAN radio units re-connect the 802.11 antenna coax from the top housing to J4 on the main logic board.
4. Inspect the perimeter of the touch panel and make sure the gasket is uniformly pressed against the top housing with
no visible protrusions into the active touch panel area.
5. Re-install the bottom housing assembly.
