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3700 Portable Samplers
Section 6 Servicing
Phillips Head
Screws (4)
Figure 6-2 Underside of the Control Box Cover
6-4
3. Lift the cover and frame off the control box, as shown in
Figure 6-2, and turn it over.
4. You can disconnect the control-box cover assembly from the
control-box lower section by disconnecting the five connectors
indicated in Figure 6-2, and the grounding strap.
5. The main circuit board assembly of the 3700 is protected by
an aluminum shield. To remove this shield, unscrew the four
screws and the nut shown in Figure 6-2, and lift off the shield.
This reveals the main circuit board, shown in Figure 6-3.
6. To remove the circuit-board assembly from the control box
cover, unscrew the four hex-threaded stand-offs and the
Phillips head screw, shown in Figure 6-2. You can now pull
the circuit board away from the control box cover.
7. To disconnect the circuit board assembly from the cover,
disconnect the connector shown in Figure 6-3.
The control box can be reassembled by reversing these steps.
Ensure that you replace all of the hardware and secure the
grounding straps.
Disconnect 5 connectors
Shield
Nut and
Grounding
Strap
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