R310....low level buzzer - GSM-Forum

Vicky · 10-06-2001, 10:27

Hi Guys, I have 2 phones with the same symptom. Ringing of buzzer is too low even if I set level to highest. I tried change buzzer & 2 amplify transistors. But nothing....ringing is still too low. Have anybody idea?

thanx

Vicky

Vicky · 10-19-2001, 15:21

plese, have anybody service manual for Ericcson R310?

thanx

Vicky

Hanukkah · 10-20-2001, 03:17

hi! there is a transistor Ic near or below the buzzer. it amplifies the ring signal.

Vicky · 10-20-2001, 09:50

Hi Hanukkah, thanks for your answer. As I said i tried change 2 transistor located in the left side from buzzer, but no success. Please can you explain me, what transistor Ic do you mean? In upper side of PCB I see only this 2 transistors, eeprom and Ic for illumination of keyboard. thanx for your answer friend.

Vicky

10-06-2001, 10:27	#1 (permalink)
Vicky Freak Poster Join Date: Feb 2001 Location: Czech Republic Age: 46 Posts: 180 Member: 3357 Status: Offline Thanks Meter: 2	R310....low level buzzer Hi Guys,<br /> I have 2 phones with the same symptom. Ringing of buzzer is too low even if I set level to highest.<br /> I tried change buzzer & 2 amplify transistors.<br /> But nothing....ringing is still too low.<br />Have anybody idea? thanx Vicky

10-20-2001, 09:50	#4 (permalink)
Vicky Freak Poster Join Date: Feb 2001 Location: Czech Republic Age: 46 Posts: 180 Member: 3357 Status: Offline Thanks Meter: 2	Hi Hanukkah,<br /> thanks for your answer. As I said i tried change 2 transistor located in the left side from buzzer, but no success.<br /> Please can you explain me, what transistor Ic do you mean? In upper side of PCB I see only this 2 transistors, eeprom and Ic for illumination of keyboard.<br /> thanx for your answer friend. Vicky

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10-19-2001, 15:21	#2 (permalink)
Vicky Freak Poster Join Date: Feb 2001 Location: Czech Republic Age: 46 Posts: 180 Member: 3357 Status: Offline Thanks Meter: 2	plese, have anybody service manual for Ericcson R310? thanx Vicky

10-20-2001, 03:17	#3 (permalink)
Hanukkah No Life Poster Join Date: Jul 2001 Location: RP Age: 48 Posts: 890 Member: 5246 Status: Offline Thanks Meter: 9	hi! there is a transistor Ic near or below the buzzer. it amplifies the ring signal.