CHAPTER 7
–
SERVICE AND REPAIR
69
MultiLoad II/ RCU II Explosion Proof Lite (EXL) Installation Guide - Part # 6070
CPU Subassembly Removal and Replacement
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
CPU
BOARD
I/O
BOARD
CHASSIS