Maintenance
Power Supply Module
Use a torque-li
miting Torx T-15 screwdriver and pliers for this procedure.
Refer to the internal photos. (See Figure 6-4.), (See Figure 8-3.)
Removal.
1. Remove the powe r butto n and rear case. (See page 6-10, Rear Case.)
2. Disconnect the following wires:
The ground wire on the power supply module from the chassis ground lug.
The power supply cable on the Main board at J101. Press down on the
latch w hile pulling up on the cable.
3. Remove the five screws that connect the power supply module to the chassis
and lift the module from the internal assembly. The two screws for the AC
connector are longer than the others.
Instal
lation.
1. Align and place the power supply module into the internal assembly.
2. Install the two longer screws with thread lock into the IEC connector
mounting holes.
3. Install the three shorter screws through the power supply and into the chass is.
4. Connect the following wire and cables:
The ground wire on the power supply module to the chassis ground lug.
You may need to use pliers to secure the wire in place.
The power supply cable to the Main b oard at J101. Position the cable to
keep it from contacting the boards and chassis .
NOTE. Wind up the power supply cable until it is tight; loops are okay. This
keeps the cable bundle together.
5. Assemble the oscilloscope by performing the installation procedure in reverse
order f or each module that was removed.
6–12 TBS1000 Series Oscilloscope Service Manual
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