SA7x Technical Description
2.4 SA7x OCP and Transition Board Assembly
Figure 2–5 OCP, Transition Board Assembly, and Associated Circuits Block Diagram
SWITCHES
STATUS LINES
CONTROL LINES
ACOK A
+12.6V
FAN CONTROL
FAN ROT
TYPICAL
DISK
DRIVE
(A)
FAN
ASSEMBLY
AMBIENT
AIR TEMP
SENSOR
POWER
SUPPLY
FRONT
PANEL
DRIVE
POWER
SWITCH
(A)
+5V,+12V
DRIVE
POWER
+12.6V
FAN OK
ACOK
CONTROL A
LED A
SW A
RETURN
TYPICAL CONTROL/
INDICATOR SET
ON OCP
UNIT NUMBER
DISPLAY
AND DRIVER
DRIVE STATUS
INDICATORS
TRANSITION
BOARD 2
TRANSITION
BOARD 1
CXO-1877B
SA7x Technical Description 2–9