Before Replacing The Main Logic Board; Table 4-4 List Of Acronyms - Sun Microsystems SPARCstation 2 Service Manual

Table 4-4 List of Acronyms

Acronyms
DMA
MMU+
NVRAM
PROM
RAM
SCSI
SIMM
Caution – Printed circuit boards are made of delicate electronic components
!
that are extremely sensitive to static electricity. Ordinary amounts of static
from your clothes or work environment can destroy the boards.
Handle boards only by the non-conducting edges. Do not touch components
themselves or any metal parts. Always wear a grounding strap when handling
the boards.
Do not disconnect the power cord from the system unit's power outlet. This
connection provides the ground path necessary to safely remove and install the
boards.
Make sure that the system unit's power is turned off by checking to make sure
that the green light-emitting diode (LED) at the front of the chassis is not lit
and that the fans are not running.

Before Replacing the Main Logic Board

This section explains with steps to perform before removing and replacing the
main logic board. Removing and replacing the main logic board is a drastic
step to take. Therefore, it is important to try to troubleshoot all other
possibilities before removing and replacing the main logic board.
FRU Replacement
Full Expression
Direct Memory Access
Memory Management Unit+
Non-Volatile Random Access Memory
Programmable Read-Only Memory
Random Access Memory
Small Computer System Interface
Single Inline Memory Module
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