Illumination, Buzzer And Vibrator - Ericsson T18s Trouble-Shooting Instruction

9 Illumination, buzzer and vibrator.

9.1 Kind of fault.
Insert a dummy battery into the phone, start it up by pressing the On/Off key and
wait for the phone to get serv (towards the test instrument or the network).
• If the phone doesn't beep directly at start, go to "Menu/Ring Vol" and try raising
• If the background illumination for the display doesn't light up at start, proceed to
• If the background illumination for the keyboard doesn't light up at start, proceed
• If both the keyboard and the display illumination doesn't work, proceed to sec-
• If the top indicator doesn't flash green when the phone has got serv, proceed to
When the phone has got serv and the top indicator flashes green, lower the battery
voltage to 4.2V. The top indicator should then start to flash red, the battery indicator
in the display should be empty and start to flash and the phone should warn with a
beep.
• The phone needs a battery calibration if none of the above mentioned things hap-
• If the phone does everything but the top indicator doesn't flash red, proceed to
• If the phone doesn't vibrate when called to, proceed to section 9.8.
9.2 Buzzer faint or dead.
Open the phone and check for liquid damages.
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.
section 9.3.
to section 9.4.
tion 9.5.
section 9.6.
pens.
section 9.7.
4/00021-2/FEA 209 544/12.B
T18s, T18sc Standard Electrical Repairs
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