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Table 2-1. Controls and Indicators
Button/Indicator
FILE
PROTECT
LOGIC
OFF
LOGIC
ON
BOT
LOAD/
REWIND
UNLOAD
HIGH
DENSITY
ONLINE
RESET
TWO-
DIGIT
DISPLAY
DIAGNOS-
TICS
TEST
EXECUTE
STEP
CE
Controls and Indicators
Indicator
Button
Indicator
Button
Indicator
Indicator
Button
Button
Indicator
Button
Indicator
Button
Indicator
Indicator
Indicator
Button
Button
Button
Button
Description
Lights to indicate absence of a write-enable ring in supply reel; write
operation is inhibited.
When pressed, tape unit is non-operational.
Lights when unit is non-operational and in standby power condition.
If pressed when circuit breaker is set to ON, tape unit is powered on
and operational.
Lights when tape unit is powered on and operational.
Lights when tape is positioned at beginning-of-tape.
If pressed when tape unit is powered on and tape is threaded, causes
a load operation to be performed (i.e., tape is positioned at BOT). If
tape is loaded, causes a rewind operation to beginning-of-tape.
If pressed when tape is loaded, tape unloads from take-up reel and
tape path onto supply reel. If tape is threaded, but not loaded, unit
slowly unloads tape onto supply reel.
Lights when unit is in GCR mode. (When indicator is turned off; unit
is in PE mode.)
Ifpressed when tape is loaded, goes online and becomes available for
system control.
Lights when tape unit is online.
Ifpressed, takes unit omine, stops tape motion, and clears error
status.
Lights when error condition exists, or at completion of diagnostic
test.
Lights when unit is in omine diagnostic/test mode. It displays
diagnostic/test numbers and results of micro diagnostic or exerciser
routines when in omine diagnostic/test mode. When RESET indi-
cator lights during an error condition, display shows either a diag-
nostic fault code or an online operational failure code.
Lights when unit is in diagnostic/test mode.
Ifpressed when unit is not online, places the unit in diagnostic/test
mode.
If pressed when unit is in diagnostic/test mode, initiates diagnostic
test according to number shown on two-digit display.
If pressed when unit is in diagnostic/test mode, sequences
diagnostic/test numbers.
If pressed when unit is in diagnostic/test mode, initiates special
diagnostics (see Section 4 for further information).
2-2
HD52-00
o
o
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