SAMSUNG C2_SRS_1T4R_ALL_ANT0515_REV0.6 (HWID08) PV#2

[SGH-N323] Logic Block Diagram

UWB Service is not used

PCG-C

2G FLX TX 0

Side etching (short)

U28000

U14000

8. Level 3 Repair

8-3. Flow chart of Troubleshooting.

8. Level 3 Repair

8-4-1. Power on

Mobile phone does not power on YES

Check the Battery Voltage level. Is it more than 3.5V? NO

Charging the battery by TA. If the voltage has not reached over 3.5V, replace the battery first. Even if replaced the battery, the battery voltage has not reached 3.5V, then check the 8-4-23 Charging Part.

Power-on the phone and check the power-on sound or motor Vibration. YES

Replace the Front assembly including display. NO

When pressing Power key, check if between the R7231 and GND are shorted NO

Replace the POWER KEY FPCB YES

1 Check the TP7004 is 1.8V

2 Check the output voltage of U7000 and U7001

• TP7025 = 3.3V
• TP_UB6000 = 1.8V

Check the signal of AP_PS_HOLD = 1.8V NO

Each voltage level has ±10% margin → Replace the PBA. If the voltage level is abnormal, YES

check the initial operation (8-4-3) YES

END

8. Level 3 Repair

8-4-2. Motor

Motor does not work Replace the motor to a new one

Is there still the same problem? YES

Are the contact points damaged? NO

(ANT180, ANT181 on the SUB PBA) YES

(L180, L181 on the SUB PBA) NO

Replace the ASSY SMD(Master+Interposer+Slave) to a new one

END

Replace ANT180, ANT181 on the SUB PBA to new ones or the SUB PBA to a new one.

Replace L180, L181 on the SUB PBA to new ones or the SUB PBA to a new one.

Replace the components damaged? YES

END

8. Level 3 Repair

8-4-3. initial

Initial Failure Re-download Software Replace the PBA END

8. Level 3 Repair

8-4-4. SIM PART