Maintenance
6–26
TDS 200 Series Digital Oscilloscope Service Manual
You will need a torque-limiting Torx T-15 screwdriver and a flat-blade
screwdriver for this procedure.
Removal. First remove the handle, power button, and rear case using the
procedures on pages 6–12, 6–13, and 6–14. Then, use the following procedure to
remove the main board module.
1. Remove the entire internal assembly from the front case using the procedure
on page 6–24.
2. Disconnect the following wires on the main board. Refer to Figure 6–17.
a. The line cord ground wire at J602 or J101 and the seven-conductor
ribbon cable at J131 from the power supply module.
b. The ribbon cable at J603 or J103 from the front panel module.
c. The ribbon cable at J202 or J102 from the display module.
3. From the bottom of the internal chassis, slightly bend the two securing tabs
and tilt the board down until it clears the tabs. Refer to Figure 6–17.
4. Pull the board out of the front slots of the internal chassis (near the BNC
connectors).
Main Board Module
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