Figure 5-1 – Atec Tektronix-1502 User Manual
Page 59
TM 9-4935-601-14-3&P
Figure 5-1. DC Fuse Location.
NOTE
All screw fasteners used on circuit boards, on or near a cam switch, should be
tightened to no more than 3 inch-pounds using a torque-limiting screwdriver.
Power Supply Boards
1.
Remove the four screws.
2.
Remove the pin connectors to P1, P2, and P3 near the rear edge of the board.
3.
Carefully lift the rear of the board until the pin connectors underneath come into view.
4.
Remove the pin connectors from the bottom of the board and lift it out of the chassis.
HV Board
1.
Remove the Power Supply board following the previous procedure.
WARNING
2 kV may be present on the HV board from charged capacitors.
2.
Discharge the possible 2 kV potential by placing a short between point A, Fig. 5-3 and ground. This
point is accessible by removing the Battery Pack and turning the 1502 upside down.
3.
Remove the pin connectors.
4.
Remove the four screws holding the board in the chassis.
5.
Lift the HV board out of the chassis.
Power Transformer
1.
Remove the Power Supply and the HV boards from the chassis using the previous procedures.
2.
Unsolder the two leads on the bottom of the Power Transformer.
3.
Remove the four bolts holding the transformer in place. The ground wire and lug on the bottom will
come off when the bolt and nut are removed.
4
Lift the Power Transformer out of the chassis.
Power Cord Conductor Identification
Conductor
Color
Alternate Color
Ungrounded (Line)
Brown
Black
Grounded (Neutral)
Blue
White
Grounding (Earthing)
Green-Yellow
Green-Yellow
Output Amplifier Board
1.
Remove the four pin connectors from the top of the Output Amps board.
2.
Remove the four screws holding the board in the chassis.
3.
Lift the board out of the hole in the side of the chassis.
REV C FEB 1980
5-3