--- a/pirelli/keypad	Mon Dec 02 07:44:41 2013 +0000
+++ b/pirelli/keypad	Mon Dec 02 08:55:38 2013 +0000
@@ -9,6 +9,14 @@
 
 Geometric centre of the footprint is at (3923,456) in steve-m's L8 scan.
 
+Pin 2: *guess* may be KBC0
+
+Pin 3: L8 trace to (4068,278), L7 damaged, guessing the middle trace in the
+bunch of 3 found when tracing KBC0. Inner via at (4084,491). Found it on L2,
+goes to (4107,482).  Goes to Calypso ball M5, or maybe N5.  N5 seems unlikely,
+as it's a power pin, so must be M5 - but that is KBC4, which shouldn't go to
+the main keypad.
+
 Pin 8: connected to massive copper flood, almost certainly GND.
 
 Pin 9: connected to a copper fill that's islanded by some traces, so it may or
@@ -24,4 +32,11 @@
 
 Tracing KBC0, Calypso ball N4: goes to via at (4122,380).  Found it on L2, goes
 to a larger via at (4130,444).  Found it on L7, trace disappears into the edge
-grind-down damage.
+grind-down damage.  The trace disappearing into the damage is the leftmost in a
+bunch of 3, the point at which the middle of the bunch is cut off is (4116,352).
+A *guess* is that we may be going to connector pin 2.
+
+Let's try tracing some signals from Iota.  Let's start with PWON (ball F8).
+L1 trace from ball seems to go to (2767,974). On L2 it goes to two vias:
+(2730,745) and (3312,194). Both vias are inner. Following (3312,194) first.
+Unable to find it, edge damage gets in the way again.