Texas Memory Systems RAM-SAN 520 - Manual (Page 8)

WARNING: Please exercise caution as you hot-swap power supplies for the RAM-SAN. Failure to follow these directions
could result in injury or death. If you have any questions about this procedure, call Texas Memory Systems at 713-266-3200.
1. Turn off the power module that you plan to remove. Do not remove a hot swap power module from the chassis
without turning the power module off. The master power switch can remain “ON” as can the other power
modules.
2. Wait 45 seconds and remove the power cord and power module.
3. Reinsert the replacement module with the new module power “OFF”. The hot swappable power supplies use a
special blind mate connector to connect the RAM-SAN power motherboard. When the power board is inserted fully
into the system, the power supply faceplate should be flush with the surface of the chassis. Once properly seated
turn “ON” the new power module.
3.5 Configuration Board and LEDs
The system configuration board is a small circuit board that holds configuration information for the various programmable
components in the system. It plugs into a connector at the top of the interface motherboard (see Figure 3). The system
configuration board is upgradeable to support future hardware revisions. To upgrade, simply remove the old board by pulling
it towards the rear of the system and gently insert the replacement board.
There are two LED packages on the interface motherboard, one on either side of the system configuration board. Most of
these LEDs are dedicated to RAM-SAN diagnostics and activity monitoring, which are duplicated in detail by the front panel
display (see section 3.6). The three right-most LEDs in the package on the right side of the motherboard are the system
configuration LEDs. When the RAM-SAN is powered on, these three lights will turn on briefly, indicating that the
programmable components in the system are being configured. If any of the lights stay on after this, the RAM-SAN has not
configured correctly. If this happens, see section 6.7 in the troubleshooting section of this manual.
RAM-SAN User’s Guide Texas Memory Systems, Inc. (February 7, 2003) 3-2