Maintenance
TDS3000B Series Service Manual
6-21
10. Snap the battery board onto the post on the rear chassis.
11. Install two screws to secure the battery board to the rear chassis.
12. Insert the parallel printer connector into the hole in the rear chassis and
secure the connector with the two jack posts with the
3
@
16
inch nut driver. Do
not forget the washers that go on the jack posts.
13. Install the power switch extension onto the power switch so that it angles
outward and to the side of the rear chassis assembly.
14. Place the oscilloscope assembly face down on soft surface (such as an
anti-static mat), with the bottom facing you.
15. Position the rear chassis assembly above the oscilloscope assembly.
16. Dress the DC power cable under the power supply and toward you.
17. Insert the braided external trigger cable into the BNC connector on the rear
chassis (four-channel models only).
18. Position the left side (fan end) of the rear chassis onto the two small tabs.
19. Secure the rear chassis to the front chassis with four screws (two screws near
the BNC connector, one screw on the fan end of the chassis, and one screw
onto the AC filter shield).
20. Connect the DC power cable to the main board at J900.
CAUTION. This note applies to 100 MHz, 300 MHz, and 500 MHz TDS3000B
instruments with serial numbers less than or equal to the following:
TDS3012B
≤
B012691
TDS3014B
≤
B012175
TDS3032B
≤
B012507
TDS3034B
≤
B012023
TDS3052B
≤
B011153
TDS3054B
≤
B012408
Make sure that the DC power cable (battery board t o main board) is correctly
aligned with the pins on both the battery board J200 connector and the main
board J900 connector. Installing either end of the DC power cable incorrectly
(offset left or right on the connector) can cause board damage when you connect
power to the instrument.
TDS3000B instruments with serial numbers greater than those listed above use
keyed cable and board connectors.
21. Connect the parallel printer port cable to the main board. See Figure 6--7.