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Then repeat the steps above to confirm that the memory error followed the suspected board to the new board
slot.
Contact Texas Memory Systems with all the information you have found to begin actions to resolve the
problem.
6.5 Confidence Diagnostic, DIAGMEM, Fails
If the ‘testmem’ test produces error messages, use section 6.4 above to narrow down the problem to a specific
memory board and, if possible, chip. If you call Texas Memory Systems customer support, be sure to log the
information so the support technicians can use it to determine what part of your RAM-SAN is
malfunctioning. If you trace the problem to a specific memory board, try to reseat the board by following the
instructions in section 6.3.1.
6.6 A Power Board LED Does not Light or Blinks or Bad Fuse LEDs are Lit
When a Hot-Swappable power supply is functioning correctly, two LEDs will be lit: AC ON and DC ON.
The LEDs are on the faceplate of the power supply module (see Figure 2), and can be seen on the rear of the
chassis.
If the DC ON and the AC ON LEDs are off or blinking, try the following:
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.
• This is just a reminder to be sure not to touch the power board components while the power supply is
plugged in and turned on. Wait for at least one minute after power-down – the power supply can
hold a dangerous charge.
• Make sure that all RAM-SAN internal fans are operational and have unblocked airflow. The RAM-SAN
power supply will go into thermal shutdown if it is not properly cooled. This will cause the power LED to
blink as it turns itself on and off depending upon the internal temperature. If a bad fuse LED is lit,
contact a Texas Memory Systems customer support technician for instructions on how to replace the
fuse.
• If more than one of the power supplies have blinking lights and the fans are not running, then check the
2A Fuse Bad LED on the power supply nearest the fans. If it is also lit, then it is possible that the fans
are not receiving power. Remove that power supply and contact Texas Memory Systems customer
support (713-266-3200) for help replacing the fuse. Once the power supply is removed from the system,
another power supply will take its place powering the fans.
• If the DC ON LED is not lit up, turn the power supply’s AC switch off, and leave it off for 2 minutes. A
power glitch might have locked up the load sharing control and turned off the converter. The converter
must discharge its internal capacitance before it will function correctly. After 2 minutes, turn the AC
power switch back on and see if the DC OK LED lights up. If the LED does not light up, or this problem
occurs frequently, contact Texas Memory Systems customer support to remedy the problem.
Verify that the power board is properly connected to the RAM-SAN system motherboard. 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.
6.7 Configuration LED Stays Lit
Be sure all system activity is stopped before checking if the configuration LEDs are lit. The configuration
LEDs share LED packages with system activity LEDs. If the system is not idle, chances are, some of the
LEDs in the RAM-SAN will be lit. Configuration LEDs should only be lit upon power-up and will remain lit
for only a second. Several things can cause a configuration LED to stay lit: heat, power surges, bad power,
RAM-SAN User’s Guide Texas Memory Systems, Inc. (February 7, 2003) 6-7