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Hello. I would like to know the pin assignments for the power adaptor of an Apple Cinema HD Display. I need to know the Voltage Supply for each Pin of the 5-Pin connection-cable for the original Cinema HD Power Adaptor. I need to test this display as the original adaptor is broken. I would like to supply power with another adaptor accordingly. I guess the pin assignment is the same for the 20", 24" and 30" models. Any help is much appreciated.
I found a forum post that explains the connection in detail. The connector is the same for all displays, but a higher wattage adapter is required for the 30" model. To sum up the forum post, the connector has a symmetrical pinout like this: Pins 1,2,3,4,5 |+24.5VDC|-24.5VDC|SENSE|-24.5VDC|+24.5VDC| |+24.5VDC|-24.5VDC|SENSE|-24.5VDC|+24.5VDC| Pins 6,7,8,9,10
Hi, just did a repair of a 30" myself. The correct layout is Pins 1,2,3,4,5 |+24.5VDC|GND|SENSE|GNDC|+24.5VDC| |+24.5VDC|GND|SENSE|GND|+24.5VDC| Pins 6,7,8,9,10 The wires are red für +24.5V, black for GND and grey for sensing. It also works with 24V. If you try another power supply and cut off the plug, I would not recommend to connect the shield with the black GND cable. The grey wire is completely useless, it only helps to prevent the bigger ACDs from being switched on with a power supply for the smaller ACDs. So do not connect it to +5V or anything else - just leave it unconnected.
lmgtfy - The pin out is in the column on the right on this page: http://en.wikipedia.org/wiki/Apple_Displ…
The lay out above is wrong, I read related post and cut the power cable, it got three wires and shield: red 24.5v black ground for DC grey 5v for USB SHIELD GROUND
How do you measure the connector with a multimeter? I am not getting a reading but also should I be when the monitor is not plugged? I don’t have much experience with a multimeter so any help would be appreciated.
