Ericsson T18s Trouble-Shooting Instruction page 47

T18s, T18sc Standard Electrical Repairs
Fig. 8.1
8.4 One or more keys are faulty.
Open the phone and check for liquid damages. Remove the dome foil and clean the
pads.
Give the board power and start it. Check if there is a voltage on the marked sides of
the faulty pads (~4.8 V on the No/On-Off, ~3.2V on the other)(Fig. 8.2).
Attach a new dome foil and assemble the phone. Perform a new verification accord-
ing to section 8.1.
Fig. 8.2.
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