Ericsson T18s Trouble-Shooting Instruction page 57

• If the vibrator doesn't start when grounding pin 1 of V622, measure the voltage
at pin 1 of V620 at the same time as you ground pin 1 of V622.
* If it's less than 4.5V, measure the resistance of R681 (~1.5 kohms, fig. 9.5).
* If the resistance is correct, replace V620 (class A).
* If it's more than 4.5V, replace V622, V621, R680 and R681 (all of class A
and in fig. 9.5).
If the fault remains, send the phone to Advanced electrical repairs.
4/00021-2/FEA 209 544/12.B
T18s, T18sc Standard Electrical Repairs
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