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PF768, Standard Electrical Repairs
Measure the VRPAD voltage (~3.8V) at V706 pin 1 (class A, fig. 8.2).
• If the VRPAD voltage is correct, replace V706 (class A).
• If the voltage is missing at V706, check if there's VRPAD voltage at pin 5 of
N452 (fig. 8.3).
* If it's incorrect or missing, proceed to chapter 3 ("Doesn´t start"-fault).
* If the voltage at pin 5 of N452 is correct, check the resistance from N452
pin 5 top V706 pin 1 (~0 ohms, fig. 8.3 and 8.2).
* If the resistance is too high it's probably L450 (~0 ohms, class A, fig.
8.3) that's broken.
* If L450 isn't faulty or incorrectly soldered there's a foil damage and
the phone is to be discarded.
If the fault remains, send the phone to the next level.
4/00021-2/FEA 209 544/11.C
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