Chapter 1
Library Overview
7
FIGURE 1-5
Controller Electronics Assembly Block Diagram
Robotics Controller PWA (A1)
The robotics controller PWA provides the interface between the library and the host
computer. Using the SCSI II Medium Changer command set, the host passes
commands to this PWA to control the library robotic equipment. This board tracks
and controls all of the actuators in the library and is responsible for monitoring the
status of switches, sensors, the control panel, and the tape drives and, when
required, transmitting this status information back to the host. Another function of
the RC PWA is to provide the RS-232 interface to the diagnostic computer for
troubleshooting and maintenance.
TJ00066a
To DIFF-SCSI bus
bus (optional)
To SE-SCSI
PWA's (4)
drive interface
To tape
Robotics controller PWA
interface PWA's (4)
and load port solenoid
To x-motor
interconnect PWA
To x-axis
Actuator driver
X-umbilical
J5
J2
Fans
To DC
J7
PWA
J3
To ext. carriage
interface PWA's (4)
To tape drive
diagnostic port
interconnect PWA
To tape drive
To RS-232
switches and door
interlock switch
J6
J8
Y-umbilical
J6
J4
J2
J9
(A1)
(A2)
J1
J15 J11
panel assembly
To control
J7
J3
To load port
Motor
power
supply
(PS2)
(PS3)
Motor
power
supply
To tape
distribution
PC power
Logic
PC power
supply
(PS1)
J4
input
EMI
filter
AC
supply
(PS4)
Logic
PWA
drive
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Страница 52: ...22 Sun Enterprise Tape Library 7 3500 Field Service Manual July 1997 FIGURE 1 11 Fan Locations TJ00016a ...
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Страница 116: ...86 Sun Enterprise Tape Library 7 3500 Field Service Manual July 1997 FIGURE 3 3 Tape Drive Interface PWA TA00109b ...
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Страница 167: ...Chapter 4 FRU Removal and Replacement 137 FIGURE 4 20 Tape Drive Distribution PWA Tape drive distribution PWA TJ00081A ...
Страница 177: ...Chapter 4 FRU Removal and Replacement 147 FIGURE 4 24 Robotics Controller PWA TJ00036a Robotics controller PWA ...
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Страница 231: ...Glossary 3 ZIF connector Zero insertion force connector ...
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