Removal and Installation Procedures
4–16
TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual
Removing the Backplane
To remove the backplane, perform the Removing the Blower Assembly on
page 4–5, Removing the Enhanced Monitor Board on page 4–8, and Removing
the Power Supply on page 4–9.
Refer to Figure 4–12 and then perform the following steps:
1. Remove the top cover of the chassis (see Figure 4–9, if necessary).
2. Disconnect the ribbon cable on the right side of the backplane.
3. Disconnect the power switch cable at J22 (or from J23) at the top of the
backplane.
NOTE
. 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.
Before disconnecting the power switch cable, note which connector the cable is
connected to (J22 normally, sometimes J23).
Remember to reconnect the cable to the correct connector.
4. From the rear of the chassis, remove the five screws on the top of the
backplane, remove seven screws from the center, and remove five screws
from the bottom.
5. After removing all of the screws from the backplane, remove the backplane
from the chassis by sliding it out of the right side.
Install the backplane by reversing the disassembly procedure.
Summary of Contents for TLA 720
Page 13: ...Table of Contents viii TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
Page 22: ...Specifications...
Page 23: ......
Page 38: ...Operating Information...
Page 39: ......
Page 105: ...Command Groups 2 66 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
Page 111: ...TEST Subsystem 2 72 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
Page 124: ...Theory of Operation...
Page 125: ......
Page 128: ...Maintenance...
Page 129: ......
Page 155: ...Jumper Settings 4 26 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
Page 178: ...Options...
Page 179: ......
Page 182: ...Diagrams...
Page 183: ......
Page 186: ...Replaceable Mechanical Parts...
Page 187: ......
Page 198: ...Replaceable Parts TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual 7 11...
Page 203: ...Replaceable Parts 7 16 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
Page 204: ...Index...
Page 205: ......
Page 211: ...Index Index 6 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
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