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Chapter 1 29
Product Information
System Unit Rear Panel Connectors
TOC Button
The TOC (transfer of control) button interrupts the system and transfers control from the
default device to an auxiliary device. A transfer of control saves the state of the processor
in Processor Internal Memory (PIM) and begins execution of recovery software at a
nonzero location specified by a special location in Page Zero called MEM_TOC. The TOC
code is protected by a checksum.
Power Cord Connector
Plug the workstation’s power cord into the power cord connector to provide AC power to
the system.
Security Loop
The security loop provides a means of locking the left side panel with a padlock or other
locking device to prevent unauthorized access. To operate the security loop:
1. Inspect left side panel for proper seating in the mainframe chassis.
2. Push in the retractable pin on the spring loaded square fastener.
3. Insert the locking device through the top and bottom holes of the square fastener.
4. Inspect after locking device is in place to assure that the retractable pin is captured in
the side panel insert hole.
The internal components of the workstation is now secured. See Figure 1-7. on page 30.
NOTE
A locking device is not supplied with the workstation; the customer must
supply a lock to use with the security loop.