DISASSEMBLY / REASSEMBLY INSTRUCTIONS
MCUK990801C8 Section 4 Issue 1
Service Manual – 21 – Revision 0
4.2.2 Changing the Backup Battery
Remove the case as previously described. The backup battery is held in a retainer on the Main PCB. Observe polarity
when replacing the battery.
Figure 4.4: Battery Polarity
4.2.3 Access to Printed Circuit Boards
1. Remove the case as previously described. While applying slight pressure to the side retaining clips, lift the Main PCB away
from the chassis.
Figure 4.5: Main PCB removal
2. While applying slight pressure to the side retaining clips, lift the Key PCB away from the chassis.
Figure 4.6: Key PCB removal
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