Specifications

Disassembly 4

Series N6700 Service Guide 85

Removing/Installing the Interface (PPMC) board

Step 1. Remove the blower cover. Remove three screws from the top of the

cover and two screws on the sides. Tilt the cover up and slide it out.

Step 2. Remove the interface cover. Remove the three screws along the left

side of the unit. Then remove the screw at the front of the cover. Lift

off the cover.

Step 3. Use a hex wrench to remove the GPIB connector from the rear of the

mainframe Disconnect all cable assemblies from the interface board.

Step 4. Disconnect the 3 cable assemblies located along the front edge of the

board. Use a T10 driver and remove the screws that attach the board

to the chassis. Lift the board out.

Step 5. To reinstall the interface board, perform the above steps in reverse

order. Replace all covers when finished.

Removing/Installing the Bias board

Step 1. Remove the blower and interface covers as previously described.

Step 2. Disconnect all cable assemblies from the bias board.

Step 3. Use a T10 driver and remove the screws that attach the bias board to

the chassis. Use a T20 driver and remove the 4 screws that attach the

board to the backplane assembly. Lift the board out.

Step 4. To reinstall the bias board, perform the above steps in reverse order.

Replace all covers when finished.

Removing/Installing the Front Panel Assembly

Step 1. Remove the two screws along the front of the bulk supply cover as

well as the four screws on each side of the front panel assembly that

attach the front panel assembly to the chassis.

Step 2. Slide the front panel assembly forward and away from the chassis to

access the test points for troubleshooting.

Step 3. To completely remove the front panel assembly, disconnect the

ribbon cable between the front panel board and the interface board

at the front panel board.

Step 4. Disconnect the wires going to the S1 switch assembly. For

reassembly, make a note of the color coding of the wires and the pins

to which they are connected.

Grey White/Brown/Grey

White/GreyWhite/Red