3.1 Voltage Measurements and Adjustments
Figure 3–3 DECmpp 12000–LC HC Power Supply and Voltage Adjustments
V 1
_
_
_ _
_
+
+
+ +
+
V5
V5
V4
V4
V2
V2
V3S
V3S
V3
V3
V3 Adj
V4 Adj
V2 Adj
V1 Adj
Fan Connector
From System
V1= +5V
V2= -5V
V3= +12V
V4= -12V
BLUE
RED
BLACK
RED
Power Cable
RED
BLACK
WHITE
JUMPER
115V
230V
ACC
GND
Figure 3–4 DECmpp 12000–LC Powertec Power Supply and Voltage
Adjustments
+5V
+12V
-12V
+
-
+
-
+
-
-5V
+
-
Fan Connector
BLUE
WHITE
RED
RED
BLACK
JUMPER
Adj
Adj
Adj
Adj
Caution: Overtightening the 12V wires can break
the posts on the power supply.
RED
BLACK
Checking and Adjusting DPU Power Supply 3–5