AT&T 3B2/300 Technical Reference Manual page 562

- - - - - - - - - - - - - - - - - - - - - - - - - - - FUNCTIONAL DESCRIPTION
3B2/400 POWER SUPPLY
HARD DISK 0
CONNECTOR
,..----------,
115 VAC
I '-'- I
-
+12 VDC
I VOLTAGE
r""7,
I
- Bl (YELLOW)
I SELECT I
220 VAC
I JUMPER GROUND
/
B2 (BLUE)
I
I
I
I~
I
GROUND
L------
___ .J
B3 (BLUE)
110 VAC
+SVDC
B4 (RED)
OR lOA FUSE AND
220-240 VAC
LINE FILTER
-
HARD DISK 1
CONNECTOR
FAN
10.6 VDC
+12 VDC
-
Cl (YELLOW)
(INTERNAL)
GROUND
C2 (BLUE)
POWER
GROUND
CONTROL
+SVDC
C3 (BLUE)
JACK
+5 VDC
- C4 (RED)
CM194B
POWER
FLOPPY DISK
BACKPLANE SUPPLY
CONNECTOR
CONNECTOR
SET
+12 VDC -
DI (YELLOW)
+5VDC
(RED) El-ES
GROUND
D2 (BLUE)
GROUND
GROUND
(BLUE) E6-Ell
D3 (BLUE)
-
+12 VDC
+5 VDC
(YELLOW) E12
-
D4 (RED)
CARTRIDGE
SYSTEM BOARD
TAPE DRIVE
CONNECTOR
CONNECTOR
+12 VDC
+12 VDC
A3 (YELLOW)
(YELLOW) Fl
-12 VDC
GROUND
A4 (ORANGE)
(BLUE) F2
GROUND
GROUND
AS (BLUE)
(BLUE) F3
GROUND
+SVDC
AB-All (BLUE)
(RED) F4
+5 VDC
A12-A15 (RED)
ON
PWRON[l}
(BROWN)
-
A 7 - ,
ON/STANDBY
-
SWITCH
I
STANDBY
I
(MOMENTARY)
-
A6
--I
(GRAY)
RESET
Al (VIOLET)
RESET
GROUND
SWITCH
A2 (VIOLET)
(MOMENTARY)
Figure 3-99: 382/400 Computer Power Supply - Functional Block Diagram
FUNCTIONAL DESCRIPTION 3-309