4.3 SIM detect trouble
USB Initial sequence of KF310 is :
VREG_USIM_3.0V(C3016 of PM6658) go to 3.0V
→
USIM clock, reset and data triggered
→
USIM IF
work (Schematic and place are refer to SIM technical brief)
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Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 65 -
start
RE- insert the SIM card
Work well ?
END
VREG_MMC_3. 0V is 3. 0V?
USIM_P_CLK is run ?
Change SIM Card
Work well ?
Change the main board
Check C 301 6,
VA300 7
END
NO
YES
YES
YES
NO
YES
VREG_USIM_2.85V (C3016)
Z3X-BOX.COM
Содержание KF310
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