Access ATB420 Series Service Manual page 34

Access keyboards ATB 420/421 Multi-Function Keyboard Product Specification and Service Guide
7.2.6 Replacement of Pointing Device
The pointing device is held by 4 M4 x 2 mm screws to the matrix board and can be replaced as a
module.
In the event of damage the pointer assembly can be dis-assembled by firstly removing the ribbon
cable then the unscrewing the 3 screws.
When re-assembling the unit, please be careful to ensure the correct orientation of the pointer
assembly as shown
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Mouse Tact switches are
soldered onto the other
side of these PCB tabs
Page 34 of 37
3 screws secure the
TrakStyk pointing
device to the keyboard
chassis plate
TrakStyk ribbon
cable connects
to the centre
kybd connection