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Esquema tshot j1 mini disponível
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8-1. Components Layout
TP_ACC_INT TP_DM TP_DQS_C TP_DQS_T TP_CATP_CSTP_CKE TP_GND TP_GPS_RST TP_GPS_CTSTP_GPS_ENTP_GPS_RXD TP_GPS_TXDTP_GPS_RTS TP_MTCK TP_MTDOTP_MTMS TP_RST TP_SLEEP_CLK TP_SPI_CLK TP_SPI_DATATP_SPI_LE TP_STBY TP_U1TXD
- ANT TOP - ANT - ANT - ANT - ANT - ANT - ANT500 ANT - BOTH_1000 BOTH_ - BOTH_ - BTC - C - C1003 C - C - C - C - C - C - C - C - C1014C - C - C1018C1017C - C - C - C1022C - C - C1024C - C - C - C - C - C - C1032C - C - C - C1037C - C - C - C1040C - C1042C - C - C - C - C - C - C1049C - C1052C - C1053C - C - C - C - C1058C - C - C - C1064C1065C1062C - C1067C - C1069C - C1070C - C - C - C1074C - C - C - C1078 C - C - C - C - C1085 C1088 C1089C1087C - C1091C - C - C - C - C1097 C - C - C201C202C - C208C210C - C214C - C - C - C - C220C219 C - C - C225 C - C - C - C - C - C - C236C - C - C - C241C - C - C - C - C - C248C - C250C - C - C - C - C - C - C - C302 C - C - C305 C304 C - C307 C308 C - C - C - C - C - C315 C - C - C - C - C - C - C322C - C323C - C - C - C328C - C330C - C332C - C334C - C - C - C - C - C - C - C - C - C - C - C - C - C - C - C - C - C - C - C - C - C - C - C - C - C - C - C361 C - C - C - C - C - C368C - C - C - C374 C372C373C - C375C - C - C - C - C - C - C - C401C - C - C - C405 C - C - C - C - C411C412 C410C - C414C - C - C - C418C - C - C421C - C423C - C425C - C - C - C431C - C - C443C - C - C - C - C - C - C - C - C - C - C501 C - C - C - C - C - C507C - C - C510 C - C - C517 C513 C - C - C - C - C - C - C - C - C - C - C - C - C - C - C601 C - C - C - C - C - C - C - C608C - C - C - C - C - C - C - C - C - C - C - C - CAM - CAM - CD500 D - EAR - F1001 F - F - F1003 F - F - F - F - F602F601F - HDC - IFC - L - L - L - L - L - L - L - L - L - L - L - L - L - L1014 L - L - L - L - L - L - L - L - L - L - L1027 L - L - L - L - L1031 L - L - L - L - L - L - L - L - L - L - L - L - L - L - L211L - L - L - L - L304L - L - L - L - L - L - L502 L503 L - L - L - L506 L507 L - L - L510L - L - L - L - L - L - L601 L - L - L - L605L - L - OSC - OSC - OSC - PAM1000 PAM - PAM - PAM - Q - R - R - R1007 R - R - R - R - R - R - R1019R1022R - R - R1027 R - R - R - R - R - R - R - R - R - R - R - R - R - R - R - R - R - R - R - R - R - R316R - R - R - R320R - R - R323 R325R - R326R - R - R - R - R - R332 R - R - R - R - R - R - R401R - R - R405 R - R406R - R - R - R - R - R - R - R - R - R - R417R - R - R421 R - R - R - R - R - R - R - R - R - R - R - R - R - R - R436R - R - R - R - R501R - R - R504 R - R - R - R - R - R - R - R BOTTOM
CN
CN
JTAG
MIC
8-4. Power On
Mobile phone does not power on.
Check the Battery Voltage. Is it more than 3.8V?
Charging the battery by TA.
If its voltage level is extremely low(under 3.0V),
Change the battery.
Power-on the phone, check the power-on sound or motor Vibration. is ok?
Change the FRONT-LCD ASSY
Check the PWR_KEY (soldering crack, open, etc)
Check the UCP output voltage. R513 ≒ 1.1V
Check the Clock OSC Is the frequency 26Mhz?
Resolder or replace TAC
If the output voltage is not satisfied with normal
condition, Change the UCP ※ voltage level has ±10% margin.
check the initial operation
END
Yes
Yes
No
No
No
Yes
Yes
No
Yes
Replace the OSC ※ Test condition (Oscilloscope setting)
: 20.0us.div (time division)
No
Yes
8-4-2. Initial
Initial Failure.
Re-download latest SW on the mobile phone.
Re Check "8-4-1 Power on" Trouble shooting process
Check the OSC1000 (Crack, open etc.) Check the UCP300 (Crack etc)
Change PBA
Yes
Abnormal
NO
Change UCP
Yes
No
END
8-4-4. Sim Part
Insert SIM card
Is SIM socket ok?
Reassemble SIM/SD assy and still SIM does not work,
replace SIM/SD assy
Yes
Yes
No
END
Is SIM/SD assy well connected to main board?
Check the SIM Voltage. C517 >= 1.8V?
Change to the new SIM card.
If it doesn`t still work SIM card after changeing
the SIM card, Check the UCP300 (Crack etc)
No
Yes
Yes
8-4-5. Charging Part
TA / USB Insert
Checking Volt at C428 = 5V?
Resolder or Replace UCP
Yes
Yes
No
END
Checking Volt at C300 = 3.3V?
Resolder or Replace UCP and then Check Charging or not
Check The IC's around UCP or Swap the Main PBA.
No
Yes
Yes
Reconnect TA or USB or Swap the Sub PBA
No
8-4-7. Speaker Part
Check speaker function.
Play MP
with maximum volume level.
Check the connection of Speaker module
Replace speaker or replace speaker module
Something Wrong
No
Yes
END
Check the signals on L512, L515 Resolder or replace L512, L
no
Yes
8-4-8. Receiver Part
Check receiver function
in voice call receiver mode
Check the receiver & EAR Jack module for any damage (tear in FPCB, crack, etc)
Reconnect or Replace receiver module
Something Wrong
No
Yes
END
Check the signals on L513, L514 OK? Resolder or replace L513, L
no
Yes
8-4-10. TSP
Touch Screen does not work
Check the connection of
Resolder C or Replace the UCP
Yes
Yes
No
END
check the voltage of C611=3.0V?
Replace Front Assy
Yes
Yes
Reassemble FRONT assy
No
8-4-11. 5M CAMERA
Main Camera function does not work
Check the Camera connector on Main PBA
Resolder C617, C618, C or Replace the UCP
Yes
Yes
No
END
Check the voltage C617 = 1.2 V C618 = 2.8V C619 = 1.8V
Replace the camera
module
Yes
Yes
Reconnect the 5M Cam module on CAM
No
8-4-13. GSM 850 / WCDMA 850 RX
It is not catching the channel
in normal condition
Check ANT PATH any damage (ANT1000, ANT1001, C1094, C1004, C1002, L1000, C1003, RFS1000)
Resolder or change
Rx path components
No
No
END
Check Rx path C1052, C1051, L1017, L1018, L1021, F Is it ok?
Check PAM1001, U any damage (Crack, open, etc)
Resolder or change
PAM1001,U1000 components
Yes
Yes
No
Yes Resolder or change
Antenna path components
Change the board
8-4-14. GSM 900 / WCDMA 900 RX
It is not catching the channel
in normal condition
Check ANT PATH any damage (ANT1000, ANT1001, C1094, C1004, C1002, L1000, C1003, RFS1000)
Resolder or change
Rx path components
No
No
END
Check Rx path C1019, L1003, C1007, C1011, L1005, F Is it ok?
Check PAM1000, PAM1001, U any damage (Crack, open, etc)
Resolder or change
PAM1000, PAM1001, U1000 components
Yes
Yes
No
Yes Resolder or change
Antenna path components
Change the board