I/O
Drawer
Power
Distribution
Board
Removal
1.
Turn
off
power
as
described
in
“Powering
Off
the
System”
on
page
427.
2.
Place
the
I/O
drawer
in
the
rear
service
position
as
described
in
“Rear
Service
Position”
on
page
465.
3.
Remove
the
two
thumbscrews
and
remove
the
rear
cover.
Rear
Cover
4.
Remove
any
adapters
or
files
installed
in
slots
12,
13,
or
14.
5.
Disconnect
the
four
I/P
cables
from
the
I/O
tray.
6.
Remove
the
two
screws
from
each
side
of
the
I/O
drawer
board
assembly.
7.
Disconnect
the
miscellaneous
power
cable
from
PCI
board
connector
J21.
8.
Slide
the
I/O
drawer
board
assembly
to
the
rear
to
disconnect
the
assembly
from
the
power
distribution
board
bus
bar.
9.
Place
the
I/O
drawer
in
the
front
service
position
as
described
in
“Front
Service
Position”
on
page
466.
10.
Remove
the
power
supplies
as
described
in
“Power
Supplies
and
Power
Supply
Fan
Assemblies”
on
page
452.
11.
Loosen
the
two
screws
from
the
center
cover
and
remove
the
cover.
450
Service
Guide
Summary of Contents for 6H0
Page 2: ......
Page 12: ...x Service Guide ...
Page 16: ...xiv Service Guide ...
Page 18: ...xvi Service Guide ...
Page 28: ...R CEC Drawer 5 EIA Units Primary I O Drawer 5 EIA Units 8 Service Guide ...
Page 29: ...CEC Drawer Front View 1 1 Power On LED Chapter 1 Reference Information 9 ...
Page 33: ...5 Fan 4 U0 1 F4 6 Fan 3 U0 1 F3 Chapter 1 Reference Information 13 ...
Page 37: ...5 Fan 4 U0 2 F4 6 Fan 3 U0 2 F3 Chapter 1 Reference Information 17 ...
Page 77: ...DC Power Cable Routings Chapter 1 Reference Information 57 ...
Page 88: ...68 Service Guide ...
Page 94: ...74 Service Guide ...
Page 182: ...162 Service Guide ...
Page 444: ...424 Service Guide ...
Page 468: ...Replacement Replace in reverse order 448 Service Guide ...
Page 489: ...Chapter 10 Parts Information This chapter contains parts information for the system 469 ...
Page 490: ...CEC Drawer 1 2 3 4 9 10 12 11 7 8 6 5 14 14 13 15 16 17 18 18 19 20 470 Service Guide ...
Page 493: ...1 2 3 4 5 6 7 8 9 10 11 Chapter 10 Parts Information 473 ...
Page 497: ...7 8 9 10 6 1 2 3 4 4 5 Chapter 10 Parts Information 477 ...
Page 510: ...490 Service Guide ...
Page 522: ...502 Service Guide ...
Page 546: ...526 Service Guide ...
Page 552: ...532 Service Guide ...
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