Control Data Corporation CYBER 180 810 Maintenance And Parts Manual page 62

CABINET POWER AND FAULT CONTROLS
Figure 4-10 illustrates the cabinet power and fault control. Table 4-5
and 4-6 define their controls and indicators respectively.
4-28
I Panel Marking
I
IOFF
I
I
I
I
I
I
I
'
ION
I
I
I
I
I
ION
I
I
I
I
I
I
I
ICONTROL, REMOTE/
I LOCAL
I
I
'
IAIR FLOW
ISENSOR TEST
I
I
I
I
I
I
I
TABLE 4-5. CABINET POWER CONTROL
Description
Pushbutton
switch
Indicator
Pushbutton
switch
Toggle
switch
Pushbutton
switch
(momentary)
Function
When pressed, the logic power
supply de outputs are disabled.
The ON indicator and the power
supply DC OUTPUT indicators turn
off but the power supply HIGH V
INPUT indicators stay on. The
logic power supplies are preset
to turn off sequentially.
Lights when the logic power
supply de outputs are success-
fully enabled by pressing the ON
switch or when the AIR FLOW
SENSOR TEST switch is pressed.
Enables the de output of all of
the logic power supplies if the
circuit breakers are on,
unregulated input voltage is
present, and no faults exist.
The logic power supplies are
preset to turn on sequentially.
Determines whether logic power is
controlled via the power control
panel (LOCAL) or by a remote
signal.
Provides a test of the low air
flow sensors. When pressed for
two to three minutes continu-
ously, the LOW AIR FLOW indicator
and the FAULT indicator light.
The cabinet blower must be off
during the test. If held on for
approximately two more minutes,
the circuit breakers trip.
I~~~~~~~~--~~~~~----~~~~~~~~~~~~~~~
60469500 A