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.
1
Table
11.
Operator Panel Controls and Indicators
Control or
Indicator
START
switch/
indicator
Unit
Number/
SPIN indicator
MAINTENANCE
indicator
Function
When pressed with indicator not
lighted, starts spindle drive motor
and lights indicator.
The first
Seek sequence begins provided
that the following conditions are
met:
l.
Disk pack in place.
2.
Deck assembly drawer closed.
3.
Circuit breakers on.
4.
Sequence power avai I able
from controller (if Power
Supply Panel LOCAL/REMOTE
switch (see Figures 15 and 21
)
is set to REMOTE ), or from
power supply (if switch is
set to LOCAL).
When pressed with indicator lighted,
initiates power-off sequence.
SPIN indicator lights when disk
pack velocity exceeds 50 rpm.
Unit Number lights when Logic
Chassis Maintenance Panel ON
LINE/
OFF LINE switch (see Fig
-
ures 15 and 20) is set to ON LINE
position and
read/
write heads are
"loaded
"
(positioned ).
Significance of Unit Number
(0 through 7) is limited to indi-
cating physical location of a
spindle within the system. The
number is unchangeable.
Lights when related module is
not on-line as a result of one of
the fol lowing conditions
:
1.
LOCAL/REMOTE switch on
Power Supply Pane I set to
LOCAL.
2.
DC/
OFF switch on Power
Supply Panel set to OFF.
3.
ON LINE
/
OFF LINE switch
one Logic Chassis Mainte-
nace Panel set to OFF
LINE.
Table
ll
.
Operator
Pd
nel Controls and Indicators (cont.)
'
Control or
!
Indicator
Fpncti on
I
FAULT
switch/
Indicator lights when an invalid
indicator
operation is attempted on the de-
vice or a failure has occurred.
I
Pressing this switch clears a fault
condition and turns the indicator
off.
I
!
Logic Number
Irdicator lights when related deck
pl
ug/
indi ca tor
s~
lected
by controller. Removable
~I
ug that ind i cotes device address
(logic number); device address can
be changed by interchanging logic
~umber plugs.
Figure 16.
Opera~or
Panel Controls and Indicators
I
Controls and Indicators
31
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