Digital Equipment VAX 4000 500A, Операция

Страница: 78 / 140

3.1.2.7 Summary of TF-Series Tape Drive Controls and Indicators
Table 3–2 summarizes the tape drive controls.
Table 3–2 TF-Series Tape Drive Controls
Control Position Function
Handle Open Lets you insert or remove tape after rewind and
unload operations are completed.
Closed Locks tape in operating position and begins load
sequence.
Unload button Momentary
contact switch
Rewinds and unloads tape.
Bus node ID plug Installed Identifies bus node ID number (unit number)
of drive to system. Factory set to a number
0 through 6. Refer to Section 3.1.1.3 for
instructions on changing bus node ID plugs.
Not Installed Drive bus node number is undefined. All four
indicators light, indicating fault condition.
Table 3–3 describes the meaning of the indicators.
Table 3–3 TF-Series Tape Drive Indicators
Write
Protected
Tape in Use
Use
Cleaning
Tape
Open
Handle
Condition
Off Off Off Off No power to tape drive.
Off Off Off On steadily Safe to move handle.
Power present.
Off Off Off Blinking Load fault. Cartridge
leader may be defective.
Pull out handle and
remove cartridge. Do not
use cartridge.
On/Off On steadily Off Off Tape loaded but not in
motion.
On/Off Blinking Off Off Tape in motion.
(continued on next page)
3–22 Operating the System Options