4 Disassembly
46 Series E4360 Service Guide
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
and two at the rear 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
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