I'm rebuilding a 4300 quad receiver and am replacing the transistors on the PD01 tone board because they are pretty noisy. I started replacing the 2SC1345 transistors using the same orientation as the originals but then noticed that they are reversed from what the silkscreen on the board says. For example, for transistor HD02, it is labeled from left to right BCE but the spec sheets say that the transistor is ECB from left to right. What gives! I assume I need to replace them as they were originally soldered in but that seems wrong!
The layout in the service manual has it the same as the board.
The layout in the service manual has it the same as the board.