Tektronix WFM 601A, Service Manual

Page: 140 / 368

Maintenance
6–20
WFM 601A, WFM 601E, & WFM 601M Service Manual
Figure 6–18: Removing the A5 Serial board
6. To reinstall the Serial board, reverse this procedure. Ensure that the bottom
edge of the Serial board is seated in the board guide before installing the
screws. Check that the cables under the Serial board are clear of the
mounting posts.
The A6 CRT board (see Figure 6–21 on page 6–25 for the location of this board)
contains the socket for the CRT and provides connectors for all inputs to the
CRT, except the anode and trace rotation connections at the front. To remove the
A6 CRT board, use the following procedure:
1. Disconnect A6J1, A6J2, and A6J3 cables on the A6 CRT board. J1 and J2
come from connectors with the same name on the A1 Power Supply board.
J3 is from soldered connections on the A3 Main board.
2. Carefully pull the board to the rear and rock the CRT socket off the CRT
connector.
3. Pull the A6 CRT board free from the bracket and instrument chassis.
4. To reinstall the A6 CRT board, reverse these steps. Carefully align the CRT
connectors with the CRT socket. Press the socket onto the CRT until fully
seated.
Removing the CRT Board