NEC POWERMATE ES 5200 - SERVICE, Руководство по обслуживанию

Страница: 178 / 306

System Board 4-11
System Memory
The system comes with between 32 MB and 512 MB of SDRAM installed in
DIMM sockets on the system board.
The memory configuration consists of two sockets. The DIMM sockets accept
168-pin, 64-bit (non-ECC) 32-, 64-, 128-, and 256-MB DIMMs. See “DIMM
Sockets” for a list of supported DIMMs.
Hardware Monitor
The Winbond 83782D chip provides economical instrumentation capabilities for
reduced cost of PC ownership when the system is used with the LANDesk
®
Client Manager. This single-chip application-specific integrated circuit (ASIC)
features:
„
integrated ambient temperature sensor
„
power supply voltage monitoring to detect excessively high or low
voltage levels
„
registers for storing POST hardware test results and error codes
„
remote reset capabilities from a remote peer or server through LANDesk
Client Manager v.3.2.
When ranges for temperature or voltage are exceeded, an interrupt is activated.
The hardware monitor component connects to the ISA bus as an 8-bit I/O
mapped device.
Plug and Play
The system comes with a Plug and Play BIOS in support of Plug and Play
technology. Plug and Play simplifies setup procedures for installing Plug and
Play expansion boards. With Plug and Play, adding a Plug and Play expansion
board is done by turning off the system, installing the board, and turning on the
system. There are no jumpers to set and no system resource conflicts to resolve.
Plug and Play automatically configures the board. (Some Plug and Play devices
may need to be jumpered if used in a system running the Windows NT
®
operating system.)
NLX Design
The system is designed to conform to the NLX standard. Electrical and
mechanical interfaces and board dimensions are standardized.
„
Signal and power connections to the system board are carried through the
riser board.
„
The system board is free of internal cabling.
„
A latching mechanism releases and secures the system board for easy
removal and replacement.