Samsung galaxy Not 2 GT-N7100 No Service No Network Not Working Solution

Samsung galaxy Not 2 GT-N7100 No Service No Network Not Working Solution Schematic,Circuit,Diagram

Samsung galaxy Not 2 GT-N7100 No Service No Network Not Working Solution Step BY Step 

Step 1

Check memu setting

Menu → applications → setting → wireless and network →

mobile networks → network mode → setting is auto mode ?

Step 2

Menu → Phone → Keypad →

*#1234# → check Phone version →

PHONE : N7100XXXXXX or

PHONE : unknown

Check the connection of RF coaxial cable

(QCB01 @ page2 )

Step 3

Check the CP_VSD1,CP_VSD2_1.8V

CP_VSD1 (C351) =0.9~1.4V

CP_VSD2 (C353) = 1.8V

Replace the UCP300

Step 4

Check VREF

VREF ( C360) = 600mV

Replace the UCP300

Step 5

Change the board

Step 6

END

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Samsung galaxy Not 2 GT-N7100 Initial Not Working Solution

Samsung galaxy Not 2 GT-N7100 Initial  Not Working Solution Schematic.Circuit,Diagram

Samsung galaxy Not 2 GT-N7100  Initial Not Working Solution Step By Step

Step 1

Initial Failure

Step 2

Re-download SW the cell-phone.

Step 3

Check the AP Reset

AP_N_RST_IN(R503) = 1.8V(High)

Check the U500 and R503 (crack, open, etc.)

Step 4

Check the oscillator clock waveforms.

32.768KHz : OSC500(C506),

24Mhz : OSC400(C443)

Check the OSC500, OSC400 and R416.

(Crack, open etc.)

Check the output clock waveforms and frequency.

※ Test condition (Oscilloscope setting)

: 20.0us.div (time division)

Step 5

Change UCP400,U501

Step 6

Change PBA

Step 7

END

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Samsung galaxy Not 2 GT-N7100 Power On Not Working Solution

Samsung galaxy Not 2 GT-7100 Power On Not Working Solution Schematic,Circuit,Diagram

Samsung galaxy Not 2 GT-N7100 Power On Not Working Solution Step By Step

Step1

Cell-phone can`t power on.

Step 2

Check the Battery Voltage.

Is it more than 3.4V?

Charging the battery by TA.

If its voltage level is extremely low(under 3.0V),

Change the battery.

Step 3

Power-on the phone and check

the power-on sound

or motor biration.

Sound or Biration is ok?

Change the FRONT-OCTA LCD ASSY

Step 4

Check the HDC601

Change the HDC601(Power-key)

And retry to the power-on operation.

Step 5

Check the U500 output voltage

(C552 = 1.1V, C550 = 1.0V,

C549 = 1.0V, C547 = 1.0V)

If the output voltage is not satisfied with normal

condition, Change the U501.

※ Each voltage will be changed from 0.9V to

1.3V during booting.

Step 6

Check the U500 output signal

(AP_PS_HOLD(TP) > 1.8V)

If the output voltage is not satisfied with normal.

condition, Change the U500.

※ Each voltage level has ±10% margin.

Step 7

Check the Clock OSC500(C506)

Is that frequency 32Khz?

Change the OSC500.

If OSC400 does not still work, Change the U501

This problem is internal oscillator of U501.

※ Test condition (Oscilloscope setting)

: 20.0us.div (time division)

Step 8

check the initial operation

Step 9

END

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Samsung Galaxy  Not 2 GT-N7100 Power On not working Solution 

Samsung Galaxy  Not 2 GT-N7100 Power On not connected Solution

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Samsung Galaxy Note 3 SM-N900 NFC not Working Solution

Samsung Galaxy Note 3 SM-N900 NFC not Working Solution Schematic , Diagram , Circuit 

Samsung Galaxy Note 3 SM-N900 NFC not Working Solution Step by Step 

Step 1

NFC is not working

Step 2

Check NFC function ON

Enable NFC Function

Step 3

Check the battery

Check the battery (wrong, damage etc)

(NFC Antenna is in battery)

Step 4

Check the Voltage on

C238 = 1.8V

Check the U600(crack, open, damaged, etc.)

Step 5

Check the Voltage on C245 =

1.8V or 3.0V

Check the U600(crack, open, damaged, etc.)

Step  6

Check the Status of

C263

Resolder or change OSC202

Step 7

Check the Status of L209, L210

C254, C260, C251, C261

Resolder or Replace L209, L210, C254, C260,

C251, C261

Step 8

Resolder or Replace U209

End

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Samsung Galaxy Note 3 SM-N900 NFC not working Solution 

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Samsung Galaxy Note 3 SM-N900 GPS not Working Solution

Samsung Galaxy Note 3 SM-N900 GPS not Working Solution Schematic , Diagram Circuit

Samsung Galaxy Note 3 SM-N900 GPS not Working Solution Step by Step

Step 1

GPS is not working

Step 2

Check GPS function ON

Enable GPS Function in the setting.

Step 3

Check the Antenna connect

ANT200(crack,open,etc)

1. Resolder or Replace ANT200

2. Replace REAR

Step 4

Check(crack,open,etc) 

C210,C211,U200,L201,L203,C220

Resolder or change the wrong element

(open, crack, deviation, etc)

Step 5

Check 26MHz Clock at 

OSC200

Check OSC200,C200,C201

(short, open, crack, etc.)

Step 6

Check the voltage on

C216=2.8V & C212=1.8V

Check AP(U4000-1)

(short, open, crack, etc.)

Step 7

Resolder or change U202

END

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Samsung Galaxy Note 3 SM-N900 GPS not working Solution 

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Samsung Galaxy Note 3 SM-N900 BlueTooth ,WIFI not working Solution

Samsung Galaxy Note 3 SM-N900 BT/WIFI not working Solution schematic, Diagram, Circuit

Samsung Galaxy Note 3 SM-N900 BT/WIFI not working Solution Step by Step

Step 1

BT/WiFi is not working

Step 2

Check BT or WiFi function

ON

Check BT or WiFi function

Step 3

Check the Voltage on C227 =

1.8V

Check the U600(crack, open, damaged, etc.)

Step 4

Check the Voltage on L206 =

1.3V

Resolder or change the L206

Step 5

Check the Status of

C230, C231

Resolder or change the C230, C231

Step 6

Check the Status of

ANT201, L211, C226

Resolder or Replace ANT201, L211, C226

Step 7

Resolder or Replace U204

END

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Samsung Galaxy Note 3 SM-N900 BlueTooth ,WIFI not working Solution 

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Samsung Galaxy Note 3 SM-N900 Ear Speaker Solution

Samsung Galaxy Note 3 SM-N900 Rreceiver Solution Schematic, Diagram , Circuit 

Samsung Galaxy Note 3 SM-N900 Rreceiver Solution Step by Step 

Step 1

Check receiver function

in voice call receiver mode.

Step 2

Check the connection of

HEA700

Reconnect HEA700

Step 3

Check RCV module where

RCV's placed

for any damage

Replace the RCV module

Step 4

Check the signals on

V702, V703

Resolder or replace U703

END

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Samsung Galaxy Note 3 SM-N900 Rreceiver not working Solution 

Samsung Galaxy Note 3 SM-N900 Ear Speaker not Responding Solution

Samsung Galaxy Grand i9082 Note Voice call not Receive Solution

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