GH688,GA628, Standard Electrical Repairs
Start the phone using the On/Off-key and check the current consumption.
Y If the phonedoesnOt consume any current at all when the On/Off-key is
pressed it is most likely liquid damaged. Open the phone and check this. Also
check that the keyboard and the keyboard pads are functional and clean.
Y If the phone consumesthanmore200mA, remove the display elastomer and try
again.
* If the consumption is reduced it was probably the elastomer or the display.
* If the consumption is just as high as before, proceed to section 3.4.3.
Y If the phone consumes ~60mA (average, varies), the battery indicator blinks
once or twice and then the phone turns itself off, then itOs probably X820 (the
pads to the volume �ex Ţlm, Ţg. 3.5) or the volume �ex Ţlm (J820) that is
shorted out. Replace the �ex Ţlm and if that doesnOt work, proceed to section
3.2.
* If the same phenomena arises without the On/Off-key being pressed it
means that V704 is broken (Å¢g. 3.2).
Fig. 3.5
Y If the phone consumes1-200mA, starts (asks for SIM/searches for the
net�etc�) and works as long as you keep the On/Off-key pressed, proceed to
section 3.4.4.
Y If the phone doesnOt start, try to program it in the �ash programmer.
* If it doesnOt start in the �ash programmer, proceed to section 3.4.1
* If you are able to program the phone in the �ash programmer but it doesnOt
start afterwards or if it is troublesome when trying to program it, proceed to
section 3.4.2.
* If the phone starts after programming it in the �ash-programmer then the
problem is probably solved, but to eliminate intermittent errors check the cir-
cuit board for liquid damage or faulty solderings on D600, D610 and D620
(Å¢g. 3.2).
4/00021-2/FEA 209 544/1.G16(112) |
ACEC
