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Mainframe Removal and Installation Procedures
TLA721 Benchtop & TLA7XM Expansion Mainframe Service Manual
6- 23
Special Configuration Options
This section contains information for configuring the mainframe for specific
situations not documented earlier in this manual. These special configuration
options require you to disassemble parts of the mainframe to access jumpers or
circuit boards.
CAUTION.
To avoid damage from high currents on the backplane, always power
off the mainframe and disconnect the power cord before performing any of the
configuration procedures described in this section.
You can control the power-on function of the benchtop mainframe using the front
panel On/Standby switch and from a remote momentary switch through the
connections of the 25-pin rear panel connector. If you connect a remote switch to
pins 5 and 18 (return side) of the 25-pin connector, the remote switch and the
front-panel On/Standby switch control the power-on functions of the chassis.
You can also disable the front-panel switch and control the power-on functions
from the remote switch only. The backplane has two connectors that control the
power-on functions.
If the front panel switch is connected to the backplane at J22, the switch controls
the power-on functions. If the switch is connected to J23, the front panel switch
is disabled; however, the light still illuminates when the chassis is powered on.
To configure the mainframe to disable the front panel On/Standby switch,
disconnect the power cord from the mainframe.
Refer to Figure 6--14 and remove the cover from the mainframe.
Locate the two connectors at the top of the backplane and disconnect the
On/Standby switch cable at J22 and connect it to J23. Replace the mainframe
cover.
Connect the momentary switch to pins 5 and 18 (return side) of the 25-pin rear
panel connector.
Remote Power Switch
Configuration
Summary of Contents for TLA7XM
Page 5: ......
Page 13: ...Table of Contents viii TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 17: ...Service Safety Summary xii TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 21: ...Preface xvi TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 25: ...Introduction xx TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 43: ...Specifications 1 18 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 85: ......
Page 87: ...Adjustment Procedures 5 2 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 161: ...Repackaging Instructions 6 74 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 165: ...Electrical Parts List 8 2 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 169: ...Diagrams 9 4 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 189: ...Mechanical Parts List 10 20 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...