u7000
pin 1 - 0V
2- 16.5V
3 - 3.95V
12 - 3.48V
13- 3.48V
14- 0V
15- 0V
17- 0.625V
19 - .5V dropping
20- .5V dropping
diode drop on pin 19/20 is .457
27 - 0.41V
resistance 17/18 = 2.6 ohms, 27/28 =20.4 ohms
PPBUS_G3H - dropping toward zero 0.98V
PPBUS diode to ground = .431V
Changed u7000 twice with same readings
pin 1 - 0V
2- 16.5V
3 - 3.95V
12 - 3.48V
13- 3.48V
14- 0V
15- 0V
17- 0.625V
19 - .5V dropping
20- .5V dropping
diode drop on pin 19/20 is .457
27 - 0.41V
resistance 17/18 = 2.6 ohms, 27/28 =20.4 ohms
PPBUS_G3H - dropping toward zero 0.98V
PPBUS diode to ground = .431V
Changed u7000 twice with same readings