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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > Nokia > Nokia Hardware & Hardware Repair

Nokia Hardware & Hardware Repair all what you need for Hardware Repairing for Nokia Phones. Before writing any thread here try to check the Frequently Asked Questions Section.

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Old 04-24-2010, 06:22   #1 (permalink)
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How to Identify Component Symbols on Nokia Schematic Diagram?


How to Identify Component Symbols on Schematic Diagram








Identifying with Symbols on Schematic Diagram is very easy task, it's just like reading ABC's on English alphabet.

Since we are talking about mobile phone's circuit here, we are going to tackle only on its symbols being used herein, unlike in some major electronics components which have a lot of component symbols. Mostly, because Cellphone circuits have a lot of Integrated Circuit ( IC ) meaning the circuits is being compact into a smaller circuit to produce, and save a very small space to put a huge circuit connection into one tiny piece of circuits.
I have inserted the Layout of each component and how it's look's like mounted on a PCB ( Printed Circuit Board) for better and easiest way of understanding.

Simply Click on Components Category for more Detailed Infos.


Resistor

Capacitor

Transistor
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Old 04-24-2010, 08:25   #2 (permalink)
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really appreciate your hard work, this is great thread for all new mechanics
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Old 04-24-2010, 18:31   #3 (permalink)
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good work! what about zener diode?
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Old 04-24-2010, 18:45   #4 (permalink)
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I what phone is zener diode ?
There are varistors , but i never seen a zener in a phone .
Varistors are like a resistor . And theyr role are to protect ic's from hight curent . Usualy are used in interfaces like keypad .
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Old 04-24-2010, 19:41   #5 (permalink)
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thanks a lot man you were so helpful
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Old 04-24-2010, 19:52   #6 (permalink)
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Now thats wat i call help....Highly appreciated...Always wanted to learn the schematics

Br

frenzy
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Old 04-27-2010, 19:19   #7 (permalink)
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Quote:
Originally Posted by Ionel View Post
I what phone is zener diode ?
There are varistors , but i never seen a zener in a phone .
Varistors are like a resistor . And theyr role are to protect ic's from hight curent . Usualy are used in interfaces like keypad .
Varistors are being pack into chips like what you said used to protect high current. Your are pertaining to EMI-ESD filters chips the so called Crystal IC by many technicians. There are bunch of varistors inside it. Varistors symbol is a two diode connected in both anodes and both cathodes connected to which the current flow.
Zener is always been in a circuit and always play the roll to rectify and stabilized voltage and currents. Newly designed Zeners are SMD (Surface Mounted) so it is not easy to identify them by looks.
If you are familiar with Integrated Circuit Datasheets ( chips schematic diagrams) you can see that it is accompanied zeners inside it.
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Old 04-27-2010, 19:26   #8 (permalink)
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that greatest tutu man that the most beginer will get out of it if they master these symbole then you will be great will all repairs you will understand all
i was looking for one tut to read schematics this answer few of my questions great man *** bless you so you can show us more

thanks keep it up

those who knows more share your knowledge will bless you with prayer
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well if i know share knowledge is power ...

not just for money great dear have no money now but send me your paypal account i should send you a 5 or 10 euro dor these tips thanks man love it
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Old 07-20-2016, 23:34   #9 (permalink)
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nice one one sir we need u more and more
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