Agilent Technologies 6612B, Руководство по обслуживанию, Страница: 43 / 74

Troubleshooting - 3
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Cover, Removal and Replacement
a. Using a T15 Torx screwdriver, unscrew the two captive screws which hold the rear bezel to the dc
power supply, and then remove the two screws from the bottom of the case.
b. Slide the cover backward until it clears the rear of the power supply.
A2 Interface Board, Removal and Replacement
To remove the Interface Board, proceed as follows:
a. Remove the cover of the power supply as described under, "Cover Removal and Replacement."
b. Remove the two 7 mm and 3/16 inch hex screws that hold the GPIB and RS-232 connectors in place.
c. Slide the board forward until the notch on the right side of the Interface board aligns with the fan
spacer board. Rotate the right side up slightly to disengage the board from the slot in the left side of the
chassis.
d. Unplug the cable from J206. Depress the release button located at the end of the connector where the
wires enter the housing.
e. Unplug the flat cables. Note the position of the conductive side for reinstallation. Connectors release
the cable by pulling out end tabs as shown by the arrows in the following figure.
f. To reinstall the Interface board, perform the above steps in reverse order.
Front Panel Assembly, Removal and Replacement
This procedure removes the front panel assembly from the dc power supply.
a. Remove the Power Supply Cover as described earlier in, "Top Cover Removal and Replacement."
b. Disconnect the cable between the Front Panel board and the Interface board at the Interface board. You
may have to remove the Interface board as described above to accomplish this.
c. Using a Torx T10 driver remove the three screws from each side of the supply that hold the front panel
brackets to the chassis.
d Slide the Front Panel assembly forward slightly to unplug the Binding Post connector and with a Torx
T15 driver remove the screw connecting the ground wire to the chassis.
e. To remove the left bracket, locate and carefully peel off the left vinyl trim to gain access to the side
screw that secures the front panel bracket the chassis. Using a Torx T15 driver remove the screw
located behind the vinyl trim.
f. To remove the right bracket, depress the plastic tab located behind the front panel in the upper right
corner.
g. To reinstall the Front Panel Assembly, perform the above steps in reverse order.