AT&T 3B2/300 Technical Reference Manual page 566

- - - - - - - - - - - - - - - - - - - - - - - - - - FUNCTIONAL DESCRIPTION
3B2 POWER SUPPLY FOR EMBEDDED SCSI
HARD DISK 0
110 VAC
OR
CONNECTOR
220-240 VAC
+12 VDC
Bl (YELLOW)
s~
GROUND
B2 (BLUE)
FAN
-
,
GROUND
B3 (BLUE)
s
FAN
,
+S VDC
B4 /RED\
POWER XMRTN
CONTROL
HARD DISK 1
JACK
+5 VDC
CONNECTOR
+12 VDC
THERMAL
Cl (YELLOW)
OVERTEMP
SENSOR
GROUND
C2 (BLUE)
GROUND
CM519A/B
C3 (BLUE)
BACKPLANE
+S VDC
C4 (RED)
-
""~~
(YELLOW) Al
-
-
'""~~
(YELLOW) A2
-
POWER
HARD DISK 2
~"-'"'~
SUPPLY
CONNECTOR
(BLUE) A3
SET
+12 VDC -,.-
....
-
DI (YELLOW)
(BLUE) A4
-
,-..--
GROUND
(ORANGE) AS
D2 (BLUE)
,.-,.---
GROUND
(VIOLET) A6
D3 (BLUE)
~ T ••~~~ T~
(BROWN) A7
+s voe
-
D4 (RED)
-
..
--···-
(GREEN) A8
-
T n ~ m , n
(WHITE) A9
FLOPPY DISK
(GRAY) AIO
PDWNROO
CONNECTOR
CM519A/B
+12 voe
El (YELLOW)
BACKPLANE
GROUND
E2 (BLUE)
2 - 4WIRE
(RED)
vrr
GROUND
E3 (BLUE)
2-4WIRE
(BLUE)
r:1>rn1Mn
+SVDC
E4 (RED)
ON/STANDBY
ON
CARTRIDGE
SWITCH
TAPE DRIVE
STANDBY CONNECTOR
(TOGGLE)
+12 voe
Fl (YELLOW) -
GROUND
F2 (BLUE)
RESET
GROUND
SWITCH
RESET F3 (BLUE)
(INTERNAL TO
+s voe
F4 (RED)
POWER SUPPLY)
GROUND
Figure 3-102: 3B2 Power Supply for Embedded SCSI- Functional Block Diagram
FUNCTIONAL DESCRIPTION 3-313