Tektronix PS280 Service & Reference Guide

Removal and Installation Procedures
Power Transistor
Circuit Boards
Removal
The Power Transistor circuit boards are attached to the heat sink at the rear of
the instrument. See Figure 6-7 for the location of the Power Transistor circuit
boards. To aid in locating the connectors referred to in this procedure, see
Figure 9-6 in the Diagrams section. The removal of other circuit boards is not
necessary to perform this procedure.
1. Unplug connector J1051 or J3051, depending on which Power Transistor
circuit board you are removing.
2. Remove the two screws securing each power transistor to the heat sink
and circuit board.
3. Unsolder the leads of the power transistors from the circuit board.
4. Remove the power transistors from the power supply.
5. Remove the circuit board from the power supply.
6. Installation of the Power Transistor circuit board is done in the reverse
Slave Power Transistor
Circuit Board
Master Power Transistor
Circuit Board
Figure 6-7: Power Transistor Circuit Boards Location
PS280 & PS283 Laboratory DC Power Supply Module-Level Service Manual
REV AUG 1991

Tektronix PS280 Specifications

General

Brand	Tektronix
Model	PS280
Category	Power Supply
Language	English