General Information
February 2011 1-6 P/N 06-237041-001
1-7.1.1 3-TIERED MAIN ENCLOSURE
Guidelines for internal configuration of the 3-Tiered Main Enclosure are listed below:
• Top Tier: Always reserved for the Power Supply Unit/Power Management (PMU) Board and Main
Controller Board (MCB) with keypad/display. The System Enclosure door is designed for the
LCD Display to show through the window at this location. The MCB with keypad/display is
designed to fit over the assembly in a hinged arrangement in the Top Tier.
• Middle Tier: Typically reserved for Expansion Card Cage. A Power Supply/PMU Assembly may
optionally be located here instead.
• Bottom Tier: Typically reserved for two standby batteries (12-AH pair or 17-AH pair) on a tray.
Use of larger capacity battery pairs(greater than 17-AH) requires purchasing the separate Large
Battery Enclosure. An Expansion Card Cage or Power Supply/PMU Assembly may optionally be
located here instead.
Figure 1-3. Illustration of Typical 3-Tiered Main Enclosure Configurations
31.50 in.
(800.10 mm)
14.375 in.
(365.125 mm)