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Hardware Equipments for GSM All about Hardware Instruments and equipments like Soldering Stations, Hardware Tools, Oscilloscopes , Frequency Counters ..ext.

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Old 04-14-2007, 05:51   #31 (permalink)
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I Will Get You Step By Step In Our Proccess Of Measurement In Our Mobile Phone Board
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Old 04-14-2007, 05:55   #32 (permalink)
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Mobile Phone With A Display Problem We Changed Many Lcd But No Result, But We Are Not Sure That Either Track Is Open Or Display Ic Problem Or Lcd Dosen't Matches
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Old 04-14-2007, 06:49   #33 (permalink)
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Display

As For Example We Will Record It From Good Running Set As Per As Our Measurement Theory Put The Positive Prob In A Ground And Negative Prob In A Target Point Where To Measure

Nokia 3310 Display Track As Follow
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Old 04-14-2007, 07:07   #34 (permalink)
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1100 Display

1100 ................................................
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Old 04-14-2007, 11:13   #35 (permalink)
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ofcourse its old tips...anyway,keep going...bcoz,for a perfect idea in basic electronics..all these should be followd...
i fully support u,my frnd...
its worthy for all electronics service guys...not only for mobile service ppl
good luck..

hai to all...kndly make this thread sticky..
share ur knowledge here&also ask ur tecnical doubts...
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Old 04-14-2007, 13:39   #36 (permalink)
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Quote:
Originally Posted by yashtel View Post
1100 ................................................

Thanks yashtel !

BASIC but VERY GOOD WAY TO CHECK FOR BEGINNERS !

EXPERTS, PLEASE ENCOURAGE SUCH POSTS, NOT DISCOURAGE.
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Old 04-15-2007, 07:18   #37 (permalink)
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I think we need some notes regarding mobile hardware

initially we should note regarding the common faults such as mic, speaker, ringer etc.

As the procedure to measure positive prod of multimeter to ground and negative prod to a target point in a ohms range or buzzer range.

In a good and running set we would measure the value of mic point, speaker point, ringer point, lcd point etc, according to the model and make and note it on a fair.

In regarding to fault such as ringer from board in a set we mesure it and match it from our note and if singl or both the point differ from out note than it might be faulty from that track we should check it from first point to the last.

If we follow these rules than the faults from board would be much more easy.
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Old 04-15-2007, 07:22   #38 (permalink)
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Note: The value we have noted in our fair, would differ littlebit, our measurement is in approximate value.

As per as i have seen it differ from climate.

For example you will find the difference in measurement in Normal Room Temperature, and Air Conditioned Room.
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Old 04-15-2007, 07:49   #39 (permalink)
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you cannot check clock signal by this method this is only to check continuity.
If you use wrong meter ( with low input impadance ) you can easily damage your phone.
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Old 04-15-2007, 08:42   #40 (permalink)
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I think you are talking about the carrier signal and you hasn't read the total post this measurement is totally based on reverse bias.
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Old 04-16-2007, 11:30   #41 (permalink)
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Really Usefull Tips And Help Ful Tricks Keep It Up Man And Thaanks 4 All Ur Help.
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Old 04-17-2007, 10:16   #42 (permalink)
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Please keep it and carry on.
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Old 04-17-2007, 17:09   #43 (permalink)
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Great man continues......................................... .
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Old 04-21-2007, 07:52   #44 (permalink)
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Please carry on, good for us
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Old 12-25-2007, 16:24   #45 (permalink)
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Really nice job you must continue it. plz can you share the information with us about, diode, ciramic capicitor, and more component which need to measurement in mobile phones how to take value. i think it will be also very help full for new learner.
thanx
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