AT&T 3B2/300 Technical Reference Manual page 557

FUNCTIONAL D E S C R I P T I O N - - - - - - - - - - - - - - - - - - - - - - - - - -
AT&T/XM
DEVICE
+5V, +12V
CONNECTOR3
DEVICE
+5V,+12V
CONNECTOR2
'
DEVICE
+5V, +12V
CONNECTOR I
'
POWER ON
+sv
INDICATOR
,_
'\
3B2/300/310 COMPUTER
+5V,+12V
HARD
DISK
DRIVE 0
+sv, +12v, -12v
SYSTEM
-
BOARD
-
'
+5V, +12V
FLOPPY
,
-
DISK
DRIVE
POWER
3.9V
SUPPLY
BATTERY
llSVAC
OR 220VAC
,
...
_______
/
COMMERCIAL
AC LINE
POWER
SUPPLY
h
115VAC
OR 220VAC
/
COMMERCIAL
AC LINE
+5V
!
+5V
+sv
>---
-
-
+5V
'-
-
+sv, +12v,
-12V, 3.3V
- -
+5V
POWER
CONTROL (+5V)
+5V
AUXILIARY
DISK
INTERFACE
"Power" ON
AND
"Diagnostic"
INDICATORS
CMl93A/B
BACKPLANE
-
-
]
POWER
CONTROL
OUTPUT
FOR NEXT
MODULE
Figure 3-96: 3B2/300 or 310 Computer and AT&T/XM Power - Functional Block Diagram
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