Samsung gt s7562 Samsung Galaxy S Duos S7562 WCDMA 3G Network Band1 (2100) Tx not Working solution

Samsung gt s7562 Samsung Galaxy S Duos S7562 WCDMA 3G Network Band1 (2100) Tx not Working solution 

Samsung gt s7562 Samsung Galaxy S Duos S7562 WCDMA 3G Network Band1 (2100) Tx not Working solution Step By Step

Continuous TX ON

(target power 24 dBm)

CONTINOUS TX ON CONDITION
TX POWER DAC:14500 CODE
APPLIED
WCDMA Band1 CH : 9750
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB

Step 1

Check Output power of RFS100
≥ 20dBm ?

Check Main ant. contact & L131,
C122, L103, L107

Step 2

Check Output power at
L101, L100, L132 ≥ 20dBm ?

Check the Ant.
switching diagram of U100
TP_ANT_SEL

Check GPIO control (UCP300)

Resolder or Change U100

Step 3

Check L123
≥ 17dBm ?

Resolder or Change F100, L123

Step 4

Check L103
≥ 5dBm ?

Resolder or Change PAM100, L103

Step5

Check U100

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Samsung Galaxy GT S  Duos S7562 WCDMA 3G Network Band1 (2100) Tx  Solution
Samsung Galaxy GT S Duos S7562 WCDMA 3G Network Band1 (2100) Tx Not Working Solution
Samsung Galaxy GT S Duos S7562 WCDMA 3G Network Band1 (2100) Tx  Not Transfer solution

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Samsung gt s7562 Samsung Galaxy S Duos S7562 WCDMA 3G Network Band8 (900) Tx not Working solution

Samsung gt s7562 Samsung Galaxy S Duos S7562 WCDMA 3G Network Band8 (900) Tx not Working solution Schematic, Diagram,Circuit

Samsung gt s7562 Samsung Galaxy S Duos S7562 WCDMA 3G Network Band8 (900) Tx not Working solution Step by Step

Continuous TX ON
Target power 24 dBm)

CONTINOUS TX ON CONDITION
TX POWER DAC:14500 CODE
APPLIED
WCDMA Band8 CH : 2788
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB

Step 1

Check Output power of RFS100
≥ 20dBm ?

Check Main ant. contact & L131,
C108, C122, L107

Step 2

Check Output power at
L108, L141, L142 ≥ 20dBm ?

Check the Ant.
switching diagram of U100
TP_ANT_SEL

Check GPIO control (UCP300)

Resolder or Change U100

Step 3

Check C122
≥ 20dBm ?

Resolder or Change F102, C122

Step 4

Check C121, L113 ≥ 5dBm ?

Resolder or Change
PAM101, C121, L113

Step5

Change U100

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Samsung Galaxy GT S  Duos S7562 WCDMA 3G Network Band8 (900)Tx  Solution

Samsung Galaxy GT S Duos S7562 WCDMA 3G Network Band8 (900)Tx Not Working Solution

Samsung Galaxy GT S Duos S7562 WCDMA 3G Network Band8 (900)Tx Not Transfer solution

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Samsung gt s7562 Samsung Galaxy S Duos S7562 WiFi not Working solution

Samsung gt s7562 Samsung Galaxy S Duos S7562 WiFi not Working solution Schematic, Diagram,Circuit

Samsung gt s7562 Samsung Galaxy S Duos S7562 WiFi not Working solution Step by Step

Step 1

WiFi Function ON

Step 2

WiFi function enabled ?

Step 3

Check the TP_WLAN..
TP_WLAN is ok?

Change UCP300

Step 4

Check the supply voltage of
L208
The supply voltage is ok?

Check PM400

Step 5

Check C242,C243 is

19.2MHz

Step 6

Resolder or replace C242,C243

Check ANT201 ≥ 14 dBm
?

Step 7

Change Rear case

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Samsung Galaxy GT S  Duos S7562  WiFi Solution

Samsung Galaxy GT S Duos S7562  WiFi Not Working Solution

Samsung Galaxy GT S Duos S7562 WiFi Network Not Search  solution

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Samsung gt s7562 Samsung Galaxy S Duos S7562 Bluetooth not Working solution

Samsung gt s7562 Samsung Galaxy S Duos S7562 Bluetooth not Working solution Schematic, Diagram,Circuit

Samsung gt s7562 Samsung Galaxy S Duos S7562 Bluetooth not Working solutionStep by Step

Step 1

Bluetooth Function ON

Step 2

Bluetooth function enabled ?

Step3

Check the BT_PCM TP.
BT_PCM TP is ok?

Change UCP300

Step 4

The voltage of R210 =
about 1.8V

Check PM400

Step5

Check C209 ≥ 5 dBm ?

Resolder or replace U201, C209

Step 6

Check the voltage of C239
= 3.3 V

Check PM400

Step7

Check ANT201 ≥ 3 dBm ?

Resolder or replace C246

Step 8

Change Rear case

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Samsung Galaxy GT S  Duos S7562    Bluetooth  Solution
Samsung Galaxy GT S Duos S7562    Bluetooth  Not Working Solution
Samsung Galaxy GT S Duos S7562 Bluetooth Not Exchange  Data solution

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Samsung gt s7562 Samsung Galaxy S Duos S7562 T-Flash Card Memory card Working Solution

Samsung gt s7562 Samsung Galaxy S Duos S7562 Memory card, T-Flash Card Working Solution Schematic , Diagram , Circuit 

Samsung gt s7562 Memory card, T-Flash Card not Working Solution Step by Step

Step 1 

Insert & Operate

microSD card

Step 2

SD700

break down ?

Change SD700

Step  3

10thPin of SD700

= High ?

Change SD700

Step 4

4thPin of SD700

= 2.85V ?

Resolder or Replace

PM400(PMIC)

Step 5

Check
UCP300

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Samsung Galaxy GT S  Duos S7562 T-Flash card not working  Solution
Samsung Galaxy GT S Duos S7562 SD Card Not Working Solution
Samsung Galaxy GT S Duos S7562 Memory card not working solution

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Samsung gt s7562 Samsung Galaxy S Duos S7562 Pcs Rx not working Solution

Samsung gt s7562 Samsung Galaxy S Duos S7562 Pcs Rx network not working Schematic , Diagram , Circuit 

Unofficial support site for this Phone By Welcome Zone Haldwani Solution

Samsung Galaxy S Duos S7562 Pcs Rx network  not working Solution Step by Step 

Step 1

Continuous Rx ON
Channel : 661 CH

Cell power : -60dBm

Step 2 

U100 PIN30 ≥ -65dBm?

(L141 using spectrum analyzer)

Resolder L141 or RFS100

Check RFcable

Step 3 

U100 PIN23, L119 ≥ -68dBm?

Check the U100`s
Ant. selection diagram

Resolder L119
or Change U100

Check Main chip(UCP300)

Step 4

F103 PIN8,9
L135, L136, L118 ≥ -75dBm?

Resolder L135, L136, L118
or Change F10

Step 5

Change U100

                       

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Samsung Galaxy GT S  Duos S7562 Pcs Rx network not working  Solution
Samsung Galaxy GT S Duos S7562 Pcs Rx Not receiving Solution
Samsung Galaxy GT S Duos S7562 Pcs Rx not response solution

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Samsung gt s7562 Samsung Galaxy S Duos S7562 GSM850/900 Tx not working Solution

Samsung gt s7562 Samsung Galaxy S Duos S7562 GSM850/900 Tx network  not working

Samsung Galaxy S Duos S7562 GSM850/900 Tx network not working Step by Step Solution 

Step 1 

Continuous TX ON

CONTINOUS TX ON

 CONDITION
TX POWER DAC:14500 CODE
APPLIED
GSM850 CH : 190
GSM900 CH : 62
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm

ATT. : 20dB

Step 2

Check Output power of RFS100
≥ 31.5 dBm ?

Check Main ant. contact & L131,
L103,C122, L107

Step 3

Check Output power at
R101, C169 ≥ 11dBm ?

Check the Ant.
switching diagram of U100
TP_ANT_SEL

Check GPIO control (UCP300)

Resolder or Change U100

Step 4

U100 normally is operated

Change U100

Step 5 

Check UCP300

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Samsung Galaxy GT S  Duos S7562 GSM850/900 Tx not working  Solution
Samsung Galaxy GT S Duos S7562GSM850/900 Tx Not network Solution
Samsung Galaxy GT S Duos S7562 GSM850/900 Tx power solution between two bands 

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