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CPU Subassembly Removal and Replacement 7.2
The CPU subassembly exists out of the CPU chassis with the power supply/communications board and
the CPU mounted. Optionally, an I/O board can be added to this subassembly. The CPU subassembly
is comprised of different Toptech Parts.
Figure 7.3 CPU Board, Power Supply / Comm Board, I/O Board with Chassis
Part numbers:
Power Supply & Communication board
AC –Power Supply Board: 4728
DC – Power Supply Board: 4729
CPU Board: 4727
I/O Boards:
Digital/Analog I/O Board: 4718
2 Meter I/O Board: 4723
POWER
SUPPLY/COMMUNICATIONS
BOARD
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