Hardware Introduction
Maintenance Manual 9
Control Box
The control box includes a front cover, which acts as a door to access the interior. Once the cover is
opened, the front view any installed components on this side are visible. By swinging open the front
cover on the control box, you can gain access to the components on the rear side of the control box.
Once the control box is fully opened, the interior of the cabinet is accessible for servicing.
Front of Control Box
The following figure illustrates the front of an open control box. The location is accessible after opening
the control box cover. When the control box is closed it is situated directly in front of the top interior of
the cabinet.
Figure 9. Components in Front of Open Control Box Cover
Table 8: Components in Front of Control Box Cover
No. Description No. Description
1 Module sampling board (R board) 2 System sampling board (H board)
3 Module control board (M board) 4 System control board (S board)
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