TITLE
Model
DOCUMENT NO.
PAGE
CN70 Service Work Instructions
CN70A,CN70E
SWICN70-000
Page
39
of
45
OPERATION:
Main Logic Board
Different main logic boards have been used to produce CK70’s since it was introduced. Be sure to replace a
main logic board with one from the same 234-xxx-xxxx series as already installed in the unit being repaired. See
table below:
Main Logic Board
Used in Keyboard Configurations
234-062-xxxx
N1, Q1
234-164-xxxx
N3, Q3, NS
234-282-xxxx
N5, Q5
Tools Required
Description
Part Number
T10 Torx driver
T7 Torx driver
Phillips screwdriver with #0 tip
Parts Required
Item Part Number Description
Qty
1
234-062S-1000
MLB, 802.11 ABGN Nexgen CN70 CK7x (use for 600MHZ configurations)
1
1
234-164S-1000
MLB,1GHZ Wodsp CN70 CK7x (use for original 1GHZ configurations)
1
1
234-282S-0100
MLB,Refresh Assy CN70 CK7X (use for refresh program 1GHz configurations)
1
2
655-199-001
screw,2-56,torx drive,wafer head,custom
3
3
813-169-001
Grounding Gasket
1
4
655-232-001
Insulator
1
Removal
1. Remove the bottom housing assembly (refer to Bottom Housing operation).
2. Remove the core assembly from the top housing (refer to Core Assembly operation).
3. Remove the scan bracket assembly (refer to scan bracket assembly operation).
4. Remove the WAN radio assembly (refer to WAN Radio Assembly operation).
5. Remove the display assembly (refer to LCD Display & Touch Panel operation).
6. Using a T7 torx driver remove three screws that attach the main logic board to the magnesium frame.
Installation
