A1018s/A1018sc Standard Electrical Repair
4/00021-2/FEA 209 544/16.B 32 (42)
9 Illumination and buzzer
9.1 Type of fault.
Insert a SIM card and attach a dummy battery to the phone. Start the phone by
pressing the On/Off -button and wait for the phone to get serv (against an instrument
or a “real” network).
• If the phone doesn´t beep directly at start, go to “Menu/Ring Vol” and try to raise
the volume (not from full to “step” as that doesn´t generate any sound). If the
buzzer sounds faint or not at all, proceed to section 9.2.
• If the background illumination for the display doesn´t light up at start, proceed to
section 9.3.
• If the keyboard illumination doesn´t light up at start, proceed to section 9.4.
• If the top indicator doesn´t flash green when the phone has got serv, proceed to
section 9.5.
When the phone has got serv and flashes green, lower the battery voltage to 4.2 V.
The top indicator should then start to flash red, the battery indicator in the display
should show an empty battery and the phone should warn with a beep.
• If the battery indicator doesn´t show an empty battery and the phone doesn´t
either beep or flashes red, the phone needs a battery calibration.
• If the battery indicator shows an empty battery and beeps, but the top indicator
doesn´t flash red, proceed to section 9.6.
9.2 The buzzer is faint or dead.
Open the phone and check for liquid damages.
Make sure H600, V605, V606, R606, R651 or D600:91 is correctly soldered.
Fig. 9.1
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