Tektronix DPO3000 Series, Руководство по обслуживанию

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Maintenance
Main Board Follow these steps to remove the main board. You need to have previously
removed the rear case assembly, rear chassis, power supply, and I/O board. Use a
TORX T15 screwdriver tip. (See Figure 5-2 on page 5-7.)
1. Disconnect the Front Panel cable from J6000 on the main board.
2. Disconnect the display backlight cable from the J6500 on the main board.
3. Disconnect the front panel cable from J0400 on the main board.
4. Disconnect the power supply control cable from J0401 on the main board.
5. Disconnect the LCD display cable from the J6600 on the main board.
6. Disconnect the front panel USB cable from J0501 on the main board.
7. Disconnect the power supply cable from J0403 on the main board.
8. Remove the seven T15 screws that connect the main board to the chassis.
When reinstalling torque these screws to 8.0 in/lb.
9. Use a screwdriver or other bar to pry the main board up, to disconnect the
connection to the Attenuator board. Place the point of the screwdriver under
the middle heat sink spring and use the chassis edge as the fulcrum. (See
Figure 4-4.)
Figure 4-4: Disconnecting the main board
10. Lift the main board out of the chassis and place it on a static-free surface.
11. When reinstalling make sure to align the main board and attenuator board
connectors and press down until the connector snaps together. (See Figure 5-2
on page 5-7.) Then use a spudger or small screwdriver to make sure that J101
is
fi rmly seated on the front panel board. (See Figure 5-6 on page 5-15.)
For MSO3000 Series oscilloscopes, make sure that the Digital Probe Guide is
in place before reinstalling the main board.
4–10 MSO3000 and DPO3000 Series Digital Phosphor Oscilloscopes Service Manual