10-6 SPARCclassic/SPARCclassic X/SPARCstation LX Service Manual • November 1993
FIGURE 10-3 Main Logic Board Layout—SPARCstation LX System (Part 270-2474)
10.5 Identifying Replaceable System Board
Components
Before you attempt to replace or install a new SPARCclassic/SPARCclassic X/
SPARCstation LX board or subassembly, make sure that you have the right unit.
I/O board
Hard drive
data connector
LED/speaker
connector
SCSI terminator
PTC
Keyboard/
Keyboard soft
power-on
connector
Diskette drive
data connector
Power supply
connector
SIMM slot U0304
SIMM slot U0301
SIMM slot U0402
SIMM slot U0303
SIMM slot U0302
SIMM slot U0401
Bank 1
Bank 2
Bank 3
Bank 1
Bank 2
Bank 3
Video SIMM slot
SBus slot 0 SBus slot 1
NVRAM
Boot PROM
mouse PTC
edge connector
ISDN
Jumpers
AUI PTC
Audio power
PTC