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Main CPU Board Replacement
Removal of CPU Board
5-22
Maintenance: Main CPU Board Replacement
NOTE
Before you begin, save the current System Setups to an SD card and print
System Setup report. This will be used to restore the system setups after
replacement of the CPU board.
1.
Remove the battery. See
2.
Remove the top cover. See
Reassembly"
on page 5-14.
3.
Remove COMM board. See
4.
Pull up on the brown ribbon cable to disconnect it from the main CPU board.
5.
Remove the three fasteners holding the acquisition board to the acquisition
board bracket and remove the acquisition board.
6.
Remove the four Torx fasteners holding the acquisition board mount in place
and remove the acquisition board mount.
7.
Remove the two grounding straps by removing the fasteners holding them to the
standoffs.
8.
Using a 5.5mm socket wrench or small pliers, carefully remove the two ground
standoffs.
9.
Disconnect the battery cable (J2), the power cable (J11), and the printhead
cable (J12) from the main CPU board.
10. Remove the nine Torx fasteners holding the CPU board in place.
Two 5.5mm
standoffs
(grounding
straps)
11. Lift the board off the lower frame.
MAC™ 3500 Resting ECG Analysis System
2021337-036
on page 5-6.
"Battery Replacement"
"Keyboard/Top Cover Assembly Removal &
"COMM Board Replacement"
on page 5-30.
Nine Torx
fasteners
Revision L
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