A1018s/A1018sc Standard Electrical Repair
4/00021-2/FEA 209 544/16.B 34 (42)
* If the resistance of the LEDs are too high, make sure VBATT exist on the
them. If VBATT is missing, the phone is probably liquid damaged. If VBATT
is correct, make sure R607 (~1.0 Kohm, class A) and R609 (~2.7 Ohm, class
A) are mounted and correctly soldered.
Fig. 9.3
• If none of the LEDs H651-H660 are lit, measure the voltage at marked side of
R607 (~0.55 V, Fig. 9.3). Before measuring you have to press one of the keys to
let the processor set LED3K high for approximately 10 seconds.
* If the voltage is missing, check the soldering at D600:69 (Fig. 9.4).
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