My D-110 appears to work -I managed to get the demo songs to play, navigating "in the blind" without a display, so that's a good sign!

(the manual is a bit misleading though: in play mode (just power the unit up) you have to press (and hold) ENTER
first, then press EDIT and finally release both buttons. Then press ENTER which will start playing the first demo song).
OK, I measured the various voltages (first from the three voltage regulators where the PCB marks the appropriate pins with +5V, +15V and -15V, then all the measuring points elsewhere on the PCB where voltages were marked. I got +5.11V, +15.23V and -14.75. Are they within range of what's OK?
So next I checked the connector for malfunctions and it appears to connect fine to the LCD. One thought comes to mind.... could it be that some LCD displays actually don't display anything until the backlight is turned on? The original D-110 LCD worked fine without the backlight (though harder to read of course), but since the connections seem fine I'm wondering if this is where the problem lies. OK, so next let's move on to the actual backlight...
I checked the voltage of the D-110 backlight connectors (a white 2-pin connector next to IC10) and it measures +5.085V which is probably within specs.
So I really should get the new backlight powered up, but herein lies the confusion. Just what exactly does it mean where it says that pins 15 and 16 (the LED backlight pins) shouldn't be connected if pins A and K of the backlight are connected to the power supply, and R7 & R8 should be removed if pins 15 and 16 are connected to the power supply? The display PCB seems to have two unjoined soldering pads next to pin 15, but I'm confused and don't know what they mean.
