Component Replacement Procedures
Replacing The Features iButton
9
Figure 5. Inserting SD Card In Its CPU board Enclosure
Replacing The Features iButton
1.
Remove the Display/CPU Assembly as discussed on page 8.
2.
Place the Display/CPU Assembly on a clean surface, display side down.
3.
Locate the Features iButton (Item 3 in Figure 3).
4.
Slide the iButton out from under the retaining clip until it is free of the holder.
5.
With the flanged end up, slide the replacement iButton under the retaining clip until it snaps securely into the
holder.
Replacing the Backup Battery
1.
Remove the front cover of the TLS4 following step 1 and 2 of the Display/CPU Assembly removal instructions
on page 8.
2.
Locate the backup battery beneath the display (Item 5 in Figure 2).
3.
Slide the battery out from under the retaining clip until it is free of the holder.
4.
With the ‘+’ side up, slide the replacement battery under the retaining clip until it snaps securely into the
holder.
Replacing the USIOM Board
1.
Remove the Display/CPU Assembly as discussed on page 8.
2.
Place the Display/CPU Assembly aside on a clean surface.
LEGEND FOR NUMBERED BOXES IN Figure 4
1. Check the SD Card read/write slide position.
2. Insert the SD card into its enclosure with the contact side facing
the CPU board.
1
2
