Tektronix WFM 601A, Service Manual

Page: 139 / 368

Maintenance
WFM 601A, WFM 601E, & WFM 601M Service Manual
6–19
4. Disconnect A1J1, A1J2, and A1J5 on the Power Supply board.
5. Desolder the two wires (blue and brown) from J12 (blue) and J10 (brown),
which come from the Line Filter.
6. Clip the cable tie from the cable to connector J4. Notice how the cable tie is
routed.
7. Remove the three TORX T-15 screws that secure the Power Supply board
and the four T-15 screws that secure the plastic shield. See Figure 6–16.
8. Use a
1
/
4
-inch nut driver to remove the four studs that support the plastic
shield.
9. Remove the Power Supply board by sliding it forward and lifting it up.
10. To replace the Power Supply board, reverse these steps.
To remove the A5 Serial board, use the following procedure:
1. Disconnect the cable to A3J9 (Main circuit board) and feed the cable through
the chassis as shown in Figure 6–17.
2. Disconnect the cables from A5J1, A5J5, and A5J8. Pull straight out on
coaxial cable connections to avoid damaging them.
3. Disconnect the cable from the Input board A4J1.
J1 J2
J7
J12
J3
J5
J4
J6
J11
Figure 6–17: Location of connections on the Serial board
4. Remove the five TORX T-15 screws securing the Serial board. See
Figure 6–18.
5. Pull out the top edge of the Serial board and lift it free.
Removing the Serial
Board