Ericsson T18s Trouble-Shooting Instruction page 17

3.4.2 Consumes no current when the On/Off key is
being pressed.
Open the phone and check for liquid damages.
Make sure the pads for the battery connector and system connector aren't dirty, oxi-
dised or liquid damaged.
Give the board power and start it up.
Check the current consumption.
• If the phone still doesn't consume any current, measure the resistance from the
marked side of the "No" key (On/Off, fig. 3.5) to pin 1 of V702 (fig. 3.4, ~2.2
kohms).
* If the resistance is correct, measure the resistance from pin 3 of V702 to pin
3 of N702 (fig. 3.4, ~0 ohms).
* If the resistance is correct, replace V702 (fig. 3.4, class A).
* If the resistance is incorrect there's a foil damage and the phone is to be
discarded.
* If the resistance is incorrect there's a foil damage and the phone is to be dis-
carded.
If the fault remains, send the phone to Advanced electrical repairs.
4/00021-2/FEA 209 544/12.B
T18s, T18sc Standard Electrical Repairs
Fig. 3.5
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