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Tuesday 19 May 2009

Nokia 8210 Repairing Schematic

Back to picture guide for your mobile phones. Now, Phone Repairing give you picture solution for your Nokia 8210. The file's contents are charging problem, vibration problem, switch on/off path, simcard problem. Download the file from link below :

Nokia 8210 Repair guide

Sunday 10 May 2009

Mobile Phones Analysis

Now, Phone Repairing guiding you to check your dead phone to find the problem solving using power supply unit. First, connect the red cable (+) of power supply to the mobile phone battery connector (+) and the black cable to the negative connector of mobile phone and connect also the blue cable of power supply to the BSI connector (the place is besides [+] connector). After all of them connected goodly, press the power button of mobile phone and see the voltage that showed by power supply then equal the result with this table.


Measurement Table
AmperePS VoltageDetection
A0.01Check CCont IC
A0.02Check CCont IC
A0.03Check the Software
A0.04Check Hagar IC
A0.12Check Cobba IC
ABefore press on/off button the voltage increase automaticallyCheck CCont IC
AOver than 0.13Check Software
AIdle but if contradictory shortCheck Ccont IC
Acontradictory shortCheck positive and on/off button’s path

Good luck.

Saturday 9 May 2009

Charging Problems Repair Guide

This is guide for you to repair your charging problems. The table guiding you to determine what you should do. Check its out.


IndicationsCause of damageWay out
When the phone connected to the charger trafo, there is no response from phoneVoltage from charger trafo doesn't come into phone's charging control
  • Check the fuse
  • If there is no problem with the path, change the charging control IC
When the phone connected to the charger trafo, the phone can detect the fill up process but a few second later there is note in LCD "Not Charging"
  • The voltage of charging trafo unfill the battery minimum voltage required
  • Problem with control charging
  • There is a problem with the passive component in charging control series
  • Change the charging control IC
When the charger trafo connected, phone can detect and fill the battery, but when plugged out there is note in LCD "Reconnect charger"The control from CPU doesn't come into charging controlReconnect the path with the wire
.
Good Luck.

Friday 8 May 2009

Mobile Phones Hardware Analysis

This is a guide for you to repair your mobile phones hardware. furthermore, after we make an analysis of damage with power supply, now we make an according to indications that show by the mobile phones. Below is the table of hardware damaged analysis.


The dead phone Analysis
IndicationsCause of DamageWay Out
Phone dead when calling but when stand by the phone working normallyThe current of transmitter series is too big
  • Check the battery first, if the voltage drop change with the new one
  • Change the power amplyfier (PA) IC
Phone flame but a few minutes later deadThe current of power supply series is too bigChange the power supply IC
Phone dead, but when charged it can fill up the batteryThe power up/down series not working correctly
  • Check on/off switch path's first
  • Change the on/off switch's button
Phone completely dead
  • Input voltage of battery
  • Output voltage of power supply
  • Clock 13 Mhz
  • Connect directly from battery connector to input voltage of power supply
  • Change the power supply IC
  • Change the RF Processor IC

Wait for other analysis.

Signal Repairing Guide

This is other guide for you to repair your mobile phone hardware. Below is guide table to find signal problem way out. Check its out.


Signal Problems
IndicationsCause of damageWay Out
Signal go up and down, even be lost. There is no signal although looked for manually
  • LNA receiver amplyfier not working correctly
  • Duplexer system
  • LNA of Nokia DCT-4 and WD-2 are joined with RF Processor
  • Change the antenna switch
No signal, but if looked for manually be found, however when we choose one of the network, it can't registeredReceiver system not working correctlyLNA of Nokia DCT-4 and WD-2 are joined with RF Processor IC
After about 3 second, the signal suddenly be lost. If looked for manually be found, however when we choose one of the network, it can't registered
  • Receiver system not working correctly
  • Modulation system not working correctly
  • Change PA IC
  • Change RF IC