Lenovo 5457 Installation And Service Manual page 55

PCI slot 1
PCI slot 2
PCI slot 3
PCI slot 4
Fan 2 connector
USB hypervisor
connector
USB tape drive
connector
Front USB
connector
SATA5
SATA4
SATA3
Operator information
panel connector
Figure 25. DIMM connectors on system board
Attention: Static electricity that is released to internal server components when the server is powered on
might cause the server to halt, which might result in the loss of data. To avoid this potential problem, always
use an electrostatic-discharge wrist strap or other grounding system when you work inside the server with
the power on.
To install a DIMM on 4U server models with non-hot-swap power supplies, complete the following steps. For
the 5U server model with hot-swap power supplies, please see the next sub-section.
1. Read the safety information in
2. Turn off the server and peripheral devices, and disconnect the power cords and all external cables.
3. Carefully turn the server on its side so that it is lying flat, with the cover facing up.
Attention: Do not allow the server to fall over.
4. Remove the side cover (see
5. Remove the air baffle (see
6. Locate the DIMM connectors on the system board. Determine the connectors into which you will install
the DIMMs. Install the DIMMs in the sequence shown in the following table.
Table 6. DIMM installation sequence
Number of DIMMs
First pair of DIMMs
Second pair of DIMMs
7. Open the retaining clips and, if necessary, remove any existing DIMM.
Microprocessor
power connector
Fan 1 connector
Microprocessor
SATA2 SATA1 SATA0
"Safety" on page v and
"Removing the side cover" on page
"Removing the air baffle" on page
Power supply
connector
Thermal
sensor
connector
HDD backplane
power connector
Battery
"Installation guidelines" on page
34).
36).
Installation sequence (connectors)
1, 3
2, 4
Chapter 2
31.
.
Installing optional devices
43