8)Trouble 9: NO network
Possible Cause:
1) make sure the RF Antenna is in well state
2) check the power VSIM1_PMU is in proper level
3) measure the waveform of S
SIM1_CARD_SCLK,
SIM1_CARD_SRST ,SIM1_CARD_SIO check the waveform is good
4) change component SIM1
5) Check the RF part’s circuit is ok 9
)
Trouble 10: can’t read SD card
Possible Cause:
1) Check VMCH_PMU is in proper level
2) Measure the waveform of MC1CK,MC1DA0—MC1DA3,check the
waveform are good
3) change component TF1
10
)
Trouble 11: CTP can’t touch or no response
Possible Cause:
1) Check CN801 is ok
2) Check the power VGP2_PMU,
AVDD_GT910 ,VDDIO_CTP are in
proper level
3) Check U801’s welding is correct
4) Check the soft fpc well connected between the main board and
the TP
5) Change another TP
11
)
Trouble 12: WIFI ,BT cannot open
Possible Cause:
1) Check the ANT1006,ANT1007in 1 Antenna is in proper state
Содержание Touchbook 7.0 3G
Страница 1: ...BLU Touchbook 7 0 3G Service Manual...
Страница 14: ...Printed Circuit Main board 8804C A TOP LAYER...
Страница 15: ...B L2 LAYER...
Страница 16: ...C GND3 LAYER...
Страница 17: ...D L4 LAYER...
Страница 18: ...E VOLTAGE LAYER...
Страница 19: ...F Bottom LAYER...
Страница 20: ...Detailed Circuit MAIN BOARD...
Страница 45: ...3 Shutdown and reset the device and then connect the device to PC 4 Finish...