Installation Installing the Control Panel
32 NFS-640 Installation Manual P/N 51332:B1 12/01/2003
Figure 7 Using the Redesigned CHS-M2 with Older Backboxes
2. Screw chassis to the backbox.
3. Attach CPU-640 to the chassis. Slide control-panel tabs into slots on chassis and lay the board
onto stand-offs so that mounting holes line up with those on the chassis. Secure with six (6)
screws (four across the top of the board, and two to the left of the power supply) provided with
the chassis. (See Figure 8.)
4. If installing KDM-2, install the stand-offs included with the keyboard kit. (See Figure 8.)
• The upper edge of the keyboard mounting plate rests on two stacked pairs of male-female
stand-offs. Connect P/N 42185 (2.0 inch, 50.8 mm) to P/N 42186 (1.312 inch, 33.33 mm).
• Thread the stacked pairs of stand-offs through mounting holes on the control panel as shown
in Figure 8.
• Thread two P/N 42166 0.937 inch (23.8 mm) male-female stand-offs through mounting
holes in the chassis rail.
• Attach ribbon cable from keypad to J4 connector on control panel. (See Figure 3.)
• Align the keypad with the stand-offs and screw it down.
5. If using the NCA instead of the KDM-2, refer to Section 3.5.2 “Using NCA as Primary
Display” and the NCA Installation Manual.
6. If not using an LEM-320, secure the last 4 mounting holes with screws.
If using a new CHS-M2 in a CAB-3
series backbox or in a CAB-4 series
backbox manufactured before
November 2003, verify stud height and
cut any stud that exceeds 0.375 in.
(9.525 mm) as per Step 1 above if a
CPU is being mounted above it.
Reinstall electronics as discussed in the
steps below.
CHS-M2-11-03-CAB-3.wmf
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