Microprocessor-board
connectors
and
LEDs
The
following
illustration
shows
the
connectors
and
LEDs
on
the
microprocessor
board.
Microprocessor 4
VRM connector
Microprocessor 3
VRM connector
Microprocessor card
error LED
Microprocessor 4 socket
Microprocessor 3 socket
Microprocessor 3 error LED
VRM 3 error LED
VRM 4 error LED
Microprocessor 4 error LED
Microprocessor 2
error LED
Microprocessor 1
error LED
Microprocessor 1
socket
Microprocessor 2
socket
Fan 4
Fan 8
Fan 3
Fan 7
Fan 6
Fan 2
Fan 5
Fan 1
Memory
card 1
Memory
card 2
Memory
card 3
Memory
card 4
Light path diagnostics
button
1
1
2
2
4
4
3
3
18
IBM
System
x3950
Type
8878
and
System
x3950
E
Type
8879:
User’s
Guide
Summary of Contents for 88743RU - System x3950 E
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Page 3: ...IBM System x3950 Type 8878 and System x3950 E Type 8879 User s Guide...
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Page 110: ...Part Number 31R1871 Printed in USA 1P P N 31R1871...