Agilent Technologies 4349B Manual page 215

4349B
5. Remove the A1 main board assembly.
a. Disconnect the following cable assemblies from the A1 board.
i. Four (or two for Option 001) cables connected to the UNKNOWN connectors.
ii. The cable assembly from the transformer.
iii. Two cable assemblies from the dc-dc converter.
b. Remove the four studs that secure the A1 board to the chassis by rotating them using a
at blade screwdriver.
c. Remove the screws that secure the A1 board to the chassis.
d. Remove the A1 board from the chassis.
Figure B-4 shows the location of the sockets for the pull-up resisters (J13 and J19) and
the switch for EXT DCV2 voltage setting (SW1). Table B-3 lists the location of the pull-up
resisters.
Handler Interface Installation B-7