Low Res: http://www.trung.com/empeg/A6-640x480.JPG
High Res: http://www.trung.com/empeg/A6-1280x960.JPG
Pin 1 and 3: http://www.trung.com/empeg/A6-PIN1AND3.JPG

How to test the diode:

1) See the pictures to help you locate the component.

2) You need to power your empep like if it was in the car before running the test. Don't plug the AC adapter into the power jack. Power the unit through the sled connector and make sure that the 3A fuse on the Yellow line is good. I use a regulated 13.8V power supply but you can use the AC adaptor. If you want to use the AC adaptor then the center is Positive and the outside part is Ground. Connect the Yellow line to the Positive center and the Black wire to the Ground of the AC adaptor. Since you are dealing with power lines please take your time and verify all the connections before applying power.

3) Connect the black lead of the VOM to the chassis of the player.

4) Now find the floppy power connector. It has a Blue, Orange, Black, and Red wire on it. Use the red lead of the VOM to check for power on the Red line. Double check your connections if you are not getting power.

4) Use the red lead of the VOM to measure the voltage at point 1. (see picture) The work area is very tight, so be careful you don't create a short.

5) If the diode is working, then the reading on the VOM should be about 0.5V. My defective diode was reading 2.53V.