Service manual

GS160/320 Component Removal and Replacement 4-17
Figure 4– 2 System Box Module Location (front)
CPU0
CPU1
CPU2
CPU3
MEM0
MEM1
MEM2
MEM3
DIR
Clock splitter
Aux power
Main power
PSM
I/O
risers
CPU0
CPU1
CPU2
CPU3
MEM0
MEM1
MEM2
MEM3
DIR Clock splitter
Aux power
Main power
PSM
I/O
risers
CPU0
CPU1
CPU2
CPU3
MEM0
MEM1
MEM2
MEM3
DIR
Clock splitter
Aux power
Main power
PSM
I/O
risers
Signal connect
Si
g
nal connect
Signal connect
CPU0
CPU1
CPU2
CPU3
MEM0
MEM1
MEM2
MEM3
DIR
Clock splitter
Aux power
Main power
PSM
I/O
risers
QBB 1 (blue)
32-P System
16-P System
Power
Cabinet
QBB5 (orange)
QBB7 (brown)
2
2
2
2
4
4
PK1538-9
9
Signal connect
Power connectors (
) are located on QBBs in the back, and power signal
connectors (
) are located in the corresponding position on QBBs in the front.
All global ports (
) exit rear of a system box. In front QBBs global port slots
are empty. Also note the difference in placement of global ports between QBB0
and QBB4; in QBB0 the lower global port is from the back QBB0; in QBB4 the
lower global port is from the front QBB5.
Note that CPU1 (
), though in the same slot in the backplane, appears in
different locations when looking directly at a QBB. The same is true for all
other modules.