SAMSUNG GT-I9100 (01) PDF Document

When repairing the SAMSUNG GT-I9100, observe the following precautions:

1. Repair in a shield box during detailed tuning. Take special care with tuning or testing because the mobile phone specification is sensitive to surrounding interference (RF noise).

2. Be careful when using magnetic objects or tools, as the performance of parts can be damaged by magnetic force.

3. Use a standard screwdriver when disassembling the product.

4. Use a thickened twisted wire when measuring levels because it has low resistance.

5. Repair after separating the test pack and set to avoid short circuit dangers (e.g., overcurrent or fire) when repairing the board while connected to a Test Pack with tuning on.

6. Take special care with the soldering iron because the PCB board is small and sensitive to heat.

7. Tune on/off while using the AC power plug because repairing the battery charger is dangerous when tuning ON/OFF the PBA and Connector after disassembling the charger.

8. Do not use unauthorized materials except for replacements registered on the SEC System.

Several semiconductors, such as ICs and BGA chips, may be damaged easily by static electricity. Follow these ESD (Electrostatically Sensitive Devices) precautions for the SAMSUNG GT-I9100:

1. Remove electrical charges emitted by the human body before touching semiconductors or parts. Touch an earthed place or wear a static electricity prevention string on your wrist.

2. Use an earthed soldering steel when connecting or disconnecting ESD parts.

3. Use a soldering removal tool equipped with static electricity isolation. Otherwise, ESD components will be damaged.

4. Do not unpack the product until you are ready to set up ESD in the product. Most ESD components are packed in boxes or aluminum plates with conductive power to prevent static electricity.

5. Maintain electric contact between ESD and the part to be set up until the ESD is completely connected to the proper place or circuit board.

The main functions of the SAMSUNG GT-I9100 include:

1. Android OS: Gingerbread.

2. HSPA+ 21Mbps / HSUPA 5.7Mbps.

3. 8MP AF camera with LED Flash.

4. 4.27 WVGA Super AMOLED Plus (C-Type) display.

5. A-GPS / BT v3.0 USB v2.0 / WiFi (802.11 a/b/g/n) / OTG.

6. Recording 1080p / Playback 1080p.

7. Sensors: Acceleration, Magnetic, Gyro, Light, Proximity.

8. 1.2GHz Dual Core CPU.

9. Application store / Precise Motion UI.

10. Seamless Sharing Experience.

Before downloading software, ensure you have the following:

1. Downloader Program (Odin3 v1.83.exe).

2. SAMSUNG GT-I9100 Mobile Phone.

3. Data Cable.

4. JIG BOX (GH99-36900A).

5. JIG Cable (GH39-01339A).

6. Adapter (GH99-38251A).

7. Serial Cable.

8. Binary files.

Follow these steps to download software to the SAMSUNG GT-I9100:

1. Load the binary download program by executing “Odin3 v1.83.exe”.

2. In the Option Selection, check “Re-Partition”, “Auto Reboot”, and “F. Reset Time”. Then select the PIT, PDA, PHONE, and CSC Files.

3. Enter the device into Download Mode by pressing down on the Volume Down button and OK button, and pressing down on the Power ON/OFF Button.

4. Connect the Handset to the PC via the Data Cable. Make sure the ID:COM box highlights yellow, indicating the handset is connected.

5. Start downloading the binary files by clicking the Start Button. Wait for “Pass” to appear on the screen.

6. Disconnect the handset from the data cable.

7. Once the device boots up, confirm the downloaded version name by dialing *#1234#.

8. Perform a Full Reset by dialing *2767*3855#.

Follow these steps for disassembling the SAMSUNG GT-I9100. Ensure you do not scratch the rear cover or damage FPCBs.

1. Release the screws at 7 points (Torque: 1.1 +/- 0.1 kgf.cm, Size: M1.4*L3).

2. Disjoint the hook at 12 points at the rear, following the order indicated in the diagram.

3. Separate the cable from the PBA. Release the screws at 2 points (Torque: 1.1 +/- 0.1 kgf.cm, Size: M1.4*L3) and detach the side FPCBs from the Bracket.

4. Separate all connectors from the PBA. Separate the PBA from the Front.

5. Release the screws at 2 points (Torque: 1.1 +/- 0.1 kgf.cm, Size: M1.4*L2) and separate the sub PBA from the PBA.

6. Separate the Receiver Ass’y from the Front by inserting a tool into the holes.

Follow these steps for assembling the SAMSUNG GT-I9100. Be careful not to damage the camera FPCB or other FPCBs.

1. Insert the VGA Ass’y in the Front and put the chassis on the sensor.

2. Attach the FPCB on the Front. Insert the sub PBA in the hook. Attach the FPCB on the Front and screw in 2 points (Torque: 1.1 +/- 0.1 kgf.cm, Size: M1.4*L2).

3. Put the Receiver Ass’y on the Front. Furl the Receiver and put it on the Front.

4. Connect the cable on the sub PBA and organize the cable on the Front.

5. Put the PBA on the Front and attach the side FPCBs on the Bracket.

6. Connect all the connectors on the PBA and connect the cable on the PBA.

7. Joint the Rear and the Front. Follow the order to hook at the 12 points.

8. Screw in 7 points (Torque: 1.1 +/- 0.1 kgf.cm, Size: M1.4*L3). Be careful not to scratch the rear cover.

If the SAMSUNG GT-I9100 cannot power on:

1. Check the Battery Voltage. If it is not more than 3.6V, charge the battery by TA. If the voltage level is extremely low (under 3.0V), change the battery.

2. Check the PK601 (Power-key FPCB) for soldering cracks or open circuits. If abnormal, change the PK601 and retry the power-on operation.

3. Check the U501 output voltage (C535 > 2.0V, C554 > 1.2V). If the output voltage is not satisfied with normal conditions (each voltage level has a +/- 10% margin), change the U501.

4. Check the U501 output signal (AP_PS_HOLD(TP) > 2.8V). If the output voltage is not satisfied with normal conditions, change the U501.

5. Check the Clock OSC500 (TP213). Is the frequency 32Khz? (Test condition: 20.0us.div time division). If not, change the OSC500. If OSC400 still does not work, change the U501 as the problem is the internal oscillator of U501.

For initial failure troubleshooting:

1. Check the CP Reset (TP: RESET_PWRDWN_N) = 0V(LOW). If No, check the UCP300 (short, crack, etc.) by probing the Test point of UCP300.

2. Check the CP active signal: PDA_ACTIVE(TP_PDA_ACTIVE) and PHONE_ACTIVE(PHONE_ACTIVE) should be >= 1.8V(HIGH). If No, check the UCP300 (short, crack, etc.).

3. Check the AP Reset: AP_N_RST_IN(R513) = 0V(LOW). If No, check the U501 and R513 (crack, open, etc.).

4. Check the oscillator clock waveforms. 32.768KHz: OSC500(TP213) and 24Mhz: OSC400(C440). If abnormal, check the OSC500, OSC400, and R418 (Crack, open, etc.) and check the output clock waveforms and frequency.

5. Is the LCD display on? If No, check the LCD part (short, crack, etc.).

6. Does the speaker make a sound? If No, check the Audio Part (short, crack, etc.).

If the SIM card is not working:

1. Insert the SIM card.

2. Check the Pin Soldering of SIM300. If No, resolder and recheck.

3. Check the SIM Voltage (R312) >= 3.0V. If No, check the UCP300 (Crack, etc.).

4. If voltage is present but it still doesn’t work, change to a new SIM card.

If the battery is not charging:

1. Insert TA / USB.

2. Check if the Charging Sequence Starts (Vin = 5V). If No, Check R566(Vin) = 5V. If not present, the TA / USB may not be connected.

3. Check EN/SET. If No, resolder and replace Q500.

4. Check PGB / CHGSB = 0V(LOW). If No, resolder or replace U504.

5. Check if the battery is charging. If No, resolder or replace U504.

If the main microphone is not functioning:

1. Check the main microphone function in voice call receiver mode or Voice Recording mode.

2. Check the Sub-PCB module where the main MIC is placed for any damage (Tear in FPC, etc). If damaged, change the Sub-PCB module.

3. Check the voltage at C656 = 2.8V. If No, resolder or replace U609.

4. Check component soldering statuses of C621, C622. If No, resolder or replace C621, C622.

If the sub microphone is not functioning:

1. Check the Sub microphone function in voice call loudSPK mode or in camcording mode.

2. Check the RCV-Earjack module where the Sub MIC is placed for any damage (Tear in FPC, etc). If damaged, replace the RCV-Earjack module.

3. Check the voltage at C658 = 2.8V. If No, resolder or replace U610.

4. Check component soldering statuses of C627, C630. If No, resolder or replace C627, C630.

If the speaker is not working:

1. Check speaker function by playing an MP3 with maximum volume level.

2. Check the connection of HEA703. If No, reconnect HEA703.

3. Check the signals on ZD700, ZD701. If No, resolder or replace U602.

4. If yes, replace the speaker module.

If the receiver is not functioning:

1. Check receiver function in voice call receiver mode.

2. Check the connection of HDC600. If No, reconnect HDC600.

3. Check the RCV-Earjack module where the RCV is placed for any damage (Tear in FPC, etc). If No (damaged), replace the RCV-Earjack module.

4. Check the signals on R629, R630. If No, resolder or replace U602.

If BT/WiFi is not working:

1. Check if the BT or WiFi function is ON. If No, enable BT or WiFi Function.

2. Check the Voltage on C208 = 2.8V. If No, check the U501 (crack, open, damaged, etc.).

3. Check 37.4MHz Clock at R208. If No, check the OSC201 (crack, open, etc.).

4. Check the Voltage on L202 = 1.5V. If No, resolder or change the L202.

5. Check the Status of C201, ANT200. If No, resolder or replace C201, ANT200.

6. Resolder or Replace MOD201.

If the FM Radio is not working:

1. Check the Connection of HDC600. If No, connect Earjack Ass’y correctly to HDC600.

2. Check the Audio Signal at L209, L210. If No, check Earphone (crack, open, etc.).

3. Check the Audio Signal at C632, C633. If No, check Audio Codec IC (U602).

4. Resolder and Replace U205.

If the LCD remains off:

1. Check the connection of HDC 701. If No, reconnect the HDC 701.

2. Check the soldering status of EMI Filters. If No, resolder EMI Filters (F700, F701, F702, F704, F707, F709).

3. Check VCC_3.0V_LCD = 3.0V(C708) and VCC_1.8V_PDA = 1.8V(C552). If No, resolder or Replace the PMIC(U501).

4. Check ELVDD_4.6V = 4.6V(C706) and ELVSS_-4.9V = -4.9V(C707). If No, resolder L703, L704.

5. Replace LCD Module.

If the Touch Screen does not work:

1. Check TSP Connector on Main PBA. If No, reconnect the HDC701.

2. Check the TSP connector on LCD Module. If No, reconnect TSP Connector.

3. Check U704 Pin 6 = 2.8V(C718) and Pin 8 = 3.3V(C719). If No, resolder or Replace U704.

4. Check the I2C signal (R426, R427) and int signal (R702, R704). If No, resolder R426, R427, R702, R704.

5. Replace LCD Module.

If the “Camera” function does not work:

1. Check the Camera connector on Main PBA. If No, reconnect the HDC700.

2. Check the voltage: C533=1.2V, C709=1.2V, C714=2.8V, C712=1.5V, C549=1.8V, C553=1.8V, C545=1.8V. If No, resolder L503, C533; U701, C709, C710; U703, C713, C714; U702, C711, C712; or Resolder C549, C553, C545; or Replace the PBA.

3. Check R703 is 24MHz. If No, resolder R703 or replace the PBA.

4. Check F703, F706. If No, resolder F703, F706 or replace the PBA.

5. Check L700, L701 is OK. If No, resolder L700, L701.

6. Replace the camera module.

If the 2M Camera function does not work:

1. Check the Camera connector on Main PBA. If No, reconnect the HDC704.

2. Check the voltage: C533=1.2V, C714=2.8V, C712=1.5V, C549=1.8V, C553=1.8V. If No, resolder U903, R905, R907, L903; U703, C713, C714; U702, C711, C712; or Resolder C549, C553.

3. Check R703 is 24MHz. If No, resolder R703 or replace the PBA.

4. Check F705. If No, resolder F705 or replace the PBA.

5. Replace the camera module.

If MHL does not work:

1. Check if MHL_SEL(TP716) goes High. If No, check if HDC703 is well connected.

2. Check if U709 works properly. If No, change U709.

3. Check the voltage of L705(1.2V), L706(3.3V), L707(1.2V), L708(1.8V), C756(2.8V). If No, check the LDOs(707, 710, 711).

4. Replace U708.

If OTG does not work:

1. Check if TP_USB_OTG_EN goes High. If No, check if HDC703 is well connected.

2. Check V_BUS_5V (D501). If No, check if D501, R524, R525, R526, R527 are well mounted.

3. Replace U503(MAX8627).