GH688,GA628, Standard Electrical Repairs
9 Illumination and buzzer.
9.1 Kind of fault.
Insert a dummy battery and a SIM card into the phone, press the On/Off-key and
wait for the phone to get serv (instrument or net).
Y If the phone doesnOt beep when starting up, go to Menu/Setting/Ring level
(Menu/Ring level at the GA 628) and try to raise the ring level to full. If there is
no sound or if it is only faint proceed to section 9.2.
Y If the illumination of the display doesnOt light up at start, proceed to section 9.3.
Y If the illumination of the keyboard doesnOt light up at start proceed to section 9.4.
Y If the top indicator of the phone doesnOt start to blink green when getting serv,
proceed to section 9.5.
When the phone has gotten serv and the top indicator starts to blink green lower the
battery voltage to 4.2V. The top indicator should start to blink red instead of green,
the battery indicator should show an empty battery and the phone should warn with
a beep.
Y If the battery indicator doesnOt show an empty battery, the top indicator doesnOt
blink red and the phone doesnOt beep it means that the phone needs a battery cal-
ibration.
Y If the battery indicator shows an empty battery, the phone beep but the top indi-
cator doesnOt blink, proceed to section 9.6.
Y If the top indicator glows with both colors and the buzzer sounds faintly, proceed
to section 9.7.
9.2 Buzzer sounds faintly or not at all.
Open the phone and check for liquid damage.
Both sides of the circuit board are shown in Ţg. 9.1.
4/00021-2/FEA 209 544/1.G55(112) |
ACEC
