Ericsson T18s Trouble-Shooting Instruction page 42

SIMCONRST
Measure at the SIMCONRST- pad (see Fig. 7.1) while starting the phone. The
phone sends 5 pulses with the amplitude 5 V at start up (see Fig. 7.2).
• If SIMCONRST is missing, do the same test as above, but at D901 pin 7 (see
Fig. 7.1). The signal (SIMRST) should look the same, but with the amplitude
3.2 V.
4/00021-2/FEA 209 544/12.B
T18s, T18sc Standard Electrical Repairs
Fig. 7.2.
SIMVCC (J603:1)
SIMPWR (D901:1)
SIMCONRST (J603:2)
SIMRST (D901:7)
SIMCONDAT (J603:7)
SIMDAT (D901:5)
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