Removing The Output Board - HP 8114A Service Manual

HP 8114A Service Guide

Removing the Output Board

Figure 4- 11. Location of the Output Board
I. Follow the instructions for Removing the Instrument Cover.
2. Remove the 2 screws securing the hybrid module guiding shield.
See Figure 4-l 1.
4. Disconnect the ribbon cable, 5101, which is close to the front
panel.
5. Disconnect the fan cable, 5102.
6. Disconnect the output cable, 5601.
7. Disconnect the two cables close to the rear panel, W401/5701 on
the timing board, and 5402 on the output board.
8. Remove the 2 screws securing the holder of the transistors Q801
to Q804 to the chassis, the holder is placed between the fan and
the hybrid modules.
9. Remove the screw securing the coil L609 to the chassis.
10. Remove the 2 screws securing the power FET Q601 to the chassis,
The FET is located between the hybrids. See Figure 4-12.
OUTPUT BOARD
S E C U R I N G S C R E W S