Contents
3 System Box FRU Replacement
Introduction ...........................................................................................
3-1
System
Box
FR
Us .................................................................................
3-1
Before
You
Begin .................................................................................. 3-3
Outside
Cover ....................................................................................... 3-4
Chasnis
Inner
Cover ............................................................................. 3-9
2.5-lnc:h
Hard Disk
Drive
.................................................................... 3-13
3.5-lnch Mass Storage
Device
............................................................ 3-16
System
Battery .................................................................................... 3-23
Intelligent Graphics Controller ............................................................. 3-25
External
Cache....................................
..
..
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..
..
..
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..
..
.. ..
.
..
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..
.
..
..
.......
3-29
Power
Supply . ..........
......
.....
...
.....
.
..
.......
..
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....
...
.. .. ..
.
....
3-31
SIMMS
................................................................................... 3-34
System
Board ................................................................................. 3-37
4 SCSI Expansion
Box
FRU
Replacement
Introduction ...........................................................................................
4-1
SCSI
Expansion
Box
F
RUs
...................................................................
4-1
Before
You
Begin .................................................................................. 4-2
Cover .................................................................................................... 4-3
Removing
SCSI Devices (5.25-lnch Mounting
Trays)
.......................... 4-7
Removing SCSI Devices (3.5-lnch Mounting
Tray)
......................... 4-12
Power Supply .....................................................................................
4-
16
A
,,..
.,..,,.
..
rower
Lonsumpuon
Introduction .......................................................................................
A-
i
Power Requirements ..........................................................................
A-1
System
Board Current Requirements ................................................. A-2
ii
DEC pc
433
Workstation Service
Manual