Access keyboards ATB 420/421 Multi-Function Keyboard Product Specification and Service Guide
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Rev 6
Access Keyboards 2001 & 2002 - All rights reserved Page 34 of 37
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
3 screws secure the
TrakStyk pointing
device to the keyboard
chassis plate
TrakStyk ribbon
cable connects
to the centre
kybd connection
Mouse Tact switches are
soldered onto the other
side of these PCB tabs
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