HP LH4r HP Netserver Service Handbook, Volume 3 - High-End - Page 22

Memory

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Power Supply Status LED Display The Front Panel Power Supply Status LED display is controlled by the Power Supply Redundancy (or Mode) switch and displays real-time power supply status. The table below shows the correlation between the statuses of individual power supply modules and the Front Panel LED indicators. Front Panel Power Supply Status LED Definitions Front Panel LED Color Green Yellow Red Power Status Power system OK Power system functioning. Power Cage temperature warning or PSM warning Power System not functioning. Power Cage temperature critical or PSM critical Memory There are two different memory boards available for the HP NetServer LX Pro and LXe Pro. The memory board that comes standard in the LX-Series NetServers uses SIMMs, and is identified by its 16 memory module sockets. The DIMM memory board is an optional accessory, using DIMMs instead of SIMMs, and is identified by its 32 memory module sockets. The SIMM-type memory board may be configured in one of two ways, depending on whether the board is in a Model A LX Pro or LXe Pro NetServer, or in a Model B LX Pro or LXe Pro NetServer. Model A SIMMs A memory board has 16 SIMM sockets, each of which may contain a 16 MB, 32 MB, 64 MB, or 128 MB SIMM. You can install any of these size SIMMs; however, all eight SIMMs within a bank must be the same size. For model A SIMMs, you can mix either 16 MB and 32 MB or 64 MB and 128 MB SIMMs in Bank 2. Key in Socket Retaining latch Bank 2 Bank 1 Notch on SIMM Follow these rules when installing memory: • Only one size and speed SIMM may be installed in each bank. • SIMMs must be installed in sets of four. • If installing only four SIMMs, install them in bank 1. 16

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16
Power Supply Status LED Display
The Front Panel Power Supply Status LED display is controlled by the Power Supply Redundancy (or Mode)
switch and displays real-time power supply status. The table below shows the correlation between the
statuses of individual power supply modules and the Front Panel LED indicators.
Front Panel Power Supply Status LED Definitions
Front Panel LED Color
Power Status
Green
Power system OK
Yellow
Power system functioning. Power Cage temperature warning or PSM warning
Red
Power System not functioning. Power Cage temperature critical or PSM critical
Memory
There are two different memory boards available for the HP NetServer LX Pro and LXe Pro. The memory
board that comes standard in the LX-Series NetServers uses SIMMs, and is identified by its 16 memory
module sockets. The DIMM memory board is an optional accessory, using DIMMs instead of SIMMs, and is
identified by its 32 memory module sockets.
The SIMM-type memory board may be configured in one of
two ways, depending on whether the board is in a Model A LX Pro or LXe Pro NetServer, or in a Model B
LX Pro or LXe Pro NetServer.
Model A SIMMs
A memory board has 16 SIMM sockets, each of which may contain a 16 MB, 32 MB, 64 MB, or 128 MB
SIMM. You can install any of these size SIMMs; however, all eight SIMMs within a bank must be the
same
size. For model A SIMMs, you can mix either 16 MB and 32 MB
or
64 MB and 128 MB SIMMs in Bank 2.
Notch on SIMM
Bank 2
Bank 1
Retaining latch
Key in Socket
Follow these rules when installing memory:
•
Only one size and speed SIMM may be installed in each bank.
•
SIMMs must be installed in sets of four.
•
If installing only four SIMMs, install them in bank 1.