Table 3-3. Ds U 190B Controls And Indicators - Honeywell 6000 Series Reference Manual

Table 3 -3. DSU 190B Controls and Indicators
CONTROL OR INDICA TOR
START switch
STOP switch
INITIALIZE switch
PROTECT switch
LAMP TES T switch
LOAD switch
READY indicator
STANDBY indicator
STOPPED indicator
OFF LINE indicator
CHECK indicator
PROTECT indicator
AC PRESENT indicator
FOWER ON/OFF switch
SUBSYSTEM OPERA TION
FUNCTION
Starts spindle rotation and causes device to go from standby
to ready state. Switch will not work·when cover is open.
Stops spindle rotation and changes device from ready to
standby state.
Puts device in available substate. Resets all operat~onal
and status registers. Switch does not work when device is
in ready state or after a positioner emergency retract.
Inhibits or enables write ope ration.
Lights all indicator lamps. Works in standby state only.
Momentarily depressing switch open or closes cover.
Switch will not wor k while the spindle is rotating.
Indicates that the device is in the ready state.
Indicates that the device is in the standby state. Indicator
lights when STOP switch has been pressed.
Lights when disk pack rotation has stopped, indicating that
cover door may be opened.
Indicates that device is powered up, but in the offline state.
Indicates a device fault condition. Latch indicator must be
reset by INITIALIZE switch.
Indicates that the write operation has been inhibited by
pressing the PROTECT switch or by detecting a fault
condition.
Indicates the presence of primary power.
C<:>ntrols the device primary power, but not the convenience
outlet. Located behind the front door of the device.
The subsystem operates in the EUS environment with the System Console, the Card
Reader and Printer Subsystems, the Input/Output Multiplexer, and/or the DATANET 355
Front- End Network Processor. For operation of the subsystem in conjunction with the EUS,
refe r to the document list located in the preface.
Since operation of the subsystem is under control of the EUS program, the main con-
cern of the subsystem operator is to provide a high degree of data availability to the EUS by:
• Keeping the subsystem ready and running
• Assuring that the proper disk packs are correctly installed
3-7 DB3?