3
A PCI card that has more than one I/O port displays each port as a separate line in
the device list.
Installing Additional Memory
Read the following procedures to supplement the procedures found in Sections 9.6
and 9.7 of the Sun Ultra 80 Service Manual.
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. Power off the system, remove the access panel, and attach an antistatic wrist strap
as described in “Power On/Off and Internal Access” in Chapter 6.
2. If necessary, remove the DC-to-DC converter.
See Section 7.3.1 “Replacing the DC-to-DC Converter Assembly”.
3. Review the important memory installation information below before you begin
installing the memory.
The system’s dual in-line memory modules (DIMMs) are arranged in four banks,
each bank consisting of four slots. The four slots in each bank are separated, with
two slots on the motherboard, and two slots on the memory riser assembly.
The following diagram shows the placement of the DIMM banks on the memory
riser assembly (left) and the motherboard (right). On the motherboard, bank 3 is
closest to the system top, bank 0 is closest to the CPU shroud (
).
DIMM Bank
DIMM Slots on Memory Riser Assembly
DIMM Slots on Motherboard
3
U0403, U0404
U1403, U1404
1
U0401, U0402
U1401, U1402
2
U0303, U0304
U1303, U1304
0
U0301, U0302
U1301, U1302
