Tektronix 1705A instruction manual Removal Replacement of the Main Board, Front

Maintenance

Remove these screws to remove 70MHZ Turner.

J1

FRONT

Removing the 70 MHz Tuner

Removal and

Replacement of the Main

Board

Remove these screws	Remove this nut
to remove A3 Main bd.	to remove L-Band Turner.

Figure 6-11: Screws holding the Main board (A3) and the Tuners (A5 and A6) in place

4.Remove the six screws that hold the cover on the 70 MHz tuner. (The cover serves as a hold down for the L-Band tuner.)

5.Slide the tuner back and upward until the L-BAND INPUT connector is clear of the rear panel.

1.Unsolder the three wires from the feed-through capacitors at the back of the 70 MHz tuner.

2.Unplug the coax connector from the rear of the 70 MHz tuner.

3.Remove the 70 MHz tuner cover. It is held on by six screws. See Fig- ure 6-11.

4.Turn the 1705A on its left side (crt down) and remove the two screws that secure the 70 MHz tuner to the main chassis.

5.Slide the tuner back and upward to remove.

6.Reverse the procedure to re-install the tuner.

1.Remove both tuners.

6- 24 1705A Spectrum Monitor