- 61 -
4.1 Power on trouble
Power on sequence of KF310 is :
PWR key press
→
PM_ON_SW_N go to low (TP3004, PM6658 KPDPWR_N)
→
PM6658 Power Up
→
VREG_MSMC_1.2V(C3040), VREG_MSME_1.8V(C3022), VREG_MSMP_2.7V(C3017),
VREG_MSMA_2.6V(C3018), VREG_TCXO_2.85V(C3015) power up
→
PON_RESET_N assert to
MSM
→
Phone booting & PS_HOLD(D3000) assert High to PMIC(PM6658)
4. TROUBLE SHOOTING
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Z3X-BOX.COM
Summary of Contents for KF310
Page 174: ...Note Z 3 X B O X C O M ...