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Keyboard soft
power-on
connector
NVRAM
LED/speaker
connector
Monitor control connectors
(used by SBus
frame buffer cards)
Boot PROM
FIGURE 10-2
Power supply
connector
Video SIMM slot
Keyboard/
Audio power
mouse PTC
PTC
Main Logic Board Layout—SPARCstation LX System (Part 270-2233)
Diskette drive
data connector
SIMM slot U0401
SIMM slot U0302
SIMM slot U0303
SIMM slot U0402
SIMM slot U0301
SIMM slot U0304
SBus slot 0
AUI PTC SCSI terminator
PTC
Chapter 10
System Board Overview
Hard drive
data connector
Bank 3
Bank 2
Bank 1
Bank 3
Bank 2
Bank 1
SBus slot 1
ISDN Jumpers
I/O board
edge connector
10-5
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Troubleshooting
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