It was very accurate in most places and enabled me to successfully replace my dv7 fan in about 6 hours. I never would have even attempted it without this detailed procedure. I imagine a computer shop would have charged hundreds of dollars for this repair. I gained enough confidence that I would attempt other repairs on my own now.
There were a couple of issues: There were several connectors still holding the motherboard in place that were not addressed. One was the backup battery, two other connectors on the bottom, one near the card reader and a second small display connector near the fan - easily handled though.
The only real problem I encountered was removing the top cover. It made popping sounds as I pried it up all right. Turned out some of the pops were locking catches and the right-rear threaded insert breaking off. Still it went back together ok and worked perfectly when I turned it back on.