Sun Microsystems Netra t 1120, Service Manual, Page: 112 / 148

10-20 Netra t 1120/1125 Service Manual • August 1998
Caution – Each SIMM bank must contain two SIMMs of equal density (for example,
two 32Mbyte SIMMs) to function properly. Do not mix SIMM density in any bank.
Caution –
Use proper ESD grounding techniques when handling components. Wear
an antistatic wrist strap and use an ESD-protected mat. Store ESD-sensitive
components in antistatic bags before placing them on any surface.
1. Attach the wrist strap.
See Section 7.1 “To Attach the Wrist Strap” on page 7-1.
2. Locate the appropriate SIMM slot(s) on the motherboard.
Note – The system unit must have at least two identical SIMMs installed in paired
sockets of any SIMM bank. For best system performance, install four identical
SIMMs. TABLE 10-1 identifies SIMM installation locations.
Caution –
Hold SIMMs only by the edges.
3. Remove the SIMM from the antistatic container.
4. Position the SIMM in the socket, ensuring that the notch is on the same side as
the lever.
5. Using your thumbs, press firmly on the top of the SIMM until it is properly
seated.
Note –
Proper SIMM seating is verified by a clicking sound. Ensure the SIMM is
properly seated.
6. Replace the power supply.
See Section 8.1.2 “To Replace the Power Supply” on page 8-5.
7. Replace the top access cover.
See Section 7.3 “To Replace the Top Access Cover” on page 7-6.
8. Power on the system.
See Section 6.1 “To Power On the System” on page 6-2.
9. Detach the wrist strap.
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