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1. Do not mix the PCBA for PMP7170B3GCE's (3G band 850,,900,1900 and 2100) and PMP7170B3G(UK)_DUO (850,1900,2100) 2. Each batch of the goods would be stick a label with the vendors' PCBA version. 3. For the one which sticked a label showing" M758K-B(E1-6), it is used on PMP7170B3G(UK)_DUO '. And If the label on the PCBA show YG-M758K-B(E1-6)-JAW-4G-2D-2B , it is meam the 3G band is 850, 1900,2100.
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Troubleshooting 1: Cannot download the program 1. Check if Battery VCC is normal. 3.7V ~4.2V (If not,check U0301,R0219) 2. Check if CPU Core VCC is normal. 1.0V-1.3V C0306,C0329(If not, check U0301) 3. Check if DDR3 VCC is normal .1.5V C0426 (if not,check U0401) 4.
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Troubleshooting 2: Cannot Power on 1.Check if Battery is normal. 3.3~4.2V (if not, Please charger ) 2.Check if key is normal. SW1301 2.4-4.5V ( if not, check U0301,KEY FPC ) 3.Check if Backlight VCC is normal. C1512 9V ( if not, check U1521 ) 4.Check if TCXO working normally.
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Troubleshooting 3: Cannot Charge the device 1.Check if VBUS is higher than 4.4V C1401(if not, check CON1205, U1401) 2. Check if the battery is normal.3.7~4.2V. (if not, check U1401,U1402 ,L1401 ,change Battery)
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Troubleshooting 4 : Display Problems 1.Check if VCOM VCC is 3.6V(C1522) . if not, check U1522,R1550,R1560. 2.Check if AVDD VCC is 11V(C1557) . if not, check U1522,L1537. 4.Check if VGH VCC is 20V(C1518) . if not, check D1507,C1580. 5.Check if VGL VCC is -6.8V(C1592) . if not, check D1511,C1590. 6.
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Troubleshooting 5: Camera not working 1.Check if VCAM_AFPMU VCC is 1.5V(C1108) . if not, check U0301,R1105. 2.Check if VCAM_IOPMU VCC is 1.8V(C1110) . if not, check U0301,R1108. 3.Check if VCAMA_PMU VCC is 2.8V(C1112) . if not, check U0301,R1107 . 4. if all VCC is normal,please check Camera ,CON1102, EMI1102-EMI1105...
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Troubleshooting 6 : Capacitive touch screen problems 1,check if Capacitive touch screen FPC (J1502) connect fix well. 2.Check if VGP2 VCC is 3.3V(VR1506) . if not, check U00301. 3.Check if SCL0 VCC is 1.8V . 4.Check if Sda0 VCC is 1.8V . 5.Check if touch panel is damage.
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Troubleshooting 7 : audio problem 1. If SPK without sound ,check U0301,L0310,L0311,SPK Cable. 2. If stereo Handset without sound ,check EINT8_EARPHONE VCC is 1.8V(R0814),if not check BEAD0801,BAND0803,R0805,R0806,R0807,R0808, 0801. 3. If Handset Microphone without sound ,check R0801,R0802,R0803,R0804,C0805,C0806 4. If Earphone Microphone without sound ,check BEAD0804, R0810,R0811,U331...
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Troubleshooting 9 : Gsensor , T-FLASH ,SIM problem 1.If Gsensor without funtion , check U1304. 2.If T-Flash Card without funtion , check T-Flash card if damaged. 3.If SIM Card without funtion , check U1201 5PIN if 1.8V(c1202). If not check check SIM card if damaged.
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Troubleshooting 10 : GSM,WCDMA Part question 1.If GSM without funtion,check U0509,U0510,R0641,U1601,L0503,L0502,L0522,L0523,C0520,C0522, C0511.if above is ok,then check the antenna connect (con0601) if damaged. 2.If WCDMA 850MHZ without funtion,check U0505,U1601,U0606,C0525,C0526,C0527,C0624,C0605,C0607 3.If WCDMA 2100MHZ without funtion,check U0506,U1601,U0607,C0529,C0531,C0532,R0619,C0626 4.If WCDMA 900MHZ without funtion,check U0520,U1601,C0536,C0535,C0538,C0645,C0656,C0670 5.If WCDMA 1900MHZ without funtion,check U0508,U1601,C0539,C0540,C0542,U0609,R0626,C0646...
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Troubleshooting 11 : WIFI/BT/GPS/FM TX/FM RX problem 1.If WIFI/BT without funtion: a. check U0901 if working well. b. check if WF_PA_VDD (C0911) is 1.6V.if not ,check U0904 c. check if wifi antenna is connect well. 2.If GPS without funtion a. check U0901 if working well b.
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Troubleshooting 12 : OTG part problem 1.Check if Vbus is 5V(C1208). If not ,check U1201,Q1201,R1217, 2.Check if usb connector is damagede(CON1205)
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Troubleshooting13 : ATV problem 1.Check if DVDD_PMU VCC is 1.5V(C1012) . if not, check U0301,camera,U1001. 2.Check if VCAM_IOPMU VCC is 1.8V(C1011) . if not, check U0301, camera, U1001. 3.Check if VCAMA_PMU VCC is 2.8V(C1014) . if not, check U0301, camera, U1001.
深 圳 市 益 光 实 业 有 限 公 司 ShenZhen Yecon Industry Co.,Ltd ShenZhen ShenZhen ShenZhen Yecon Yecon YeconIndustry Industry Industry Co.,Ltd Co.,Ltd Co.,Ltd 1. 1. 1. 1.3 3 3 3 Tool Tool Tool Version Version Tool Version Version Current Version No.(as Picture):...
深 圳 市 益 光 实 业 有 限 公 司 ShenZhen Yecon Industry Co.,Ltd ShenZhen ShenZhen ShenZhen Yecon Yecon YeconIndustry Industry Industry Co.,Ltd Co.,Ltd Co.,Ltd If above picture appears, it means download successfully, if continue to download, turn off “Download OK”, repeat above steps.