Ericsson SH 888 Trouble-Shooting Instruction page 36

SH888, S868, Standare Electrical Repair
If an entire column is non-functional, measure the resistance from the pad to the
corresponding pin of D600 (see fig. 8.3, measure from the side of the pad that's "C"
shaped). If there's a foil damage the phone is to be discarded. If only part of a col-
umn is non-functional, measure the resistance from a functional keypad in that col-
umn to a non-functional to verify a foil damage.
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4/00021-2/FEA 209 544/3.D