Asus BU403UA Repair Guide
Jan/27/ 2016
POWER FLOW
POWER ON SEQUENCE
AC POWER ON SEQUENCE
Signal Measure Point-Bottom
31 PL8103 VCCSA 21
23.R5817 +1.2V_PWRGD 513
29PL8102 VCCCORE 10
19.PR8699 PM_SUSC# 590
24.R5806 ALL_SYSTEM_PWRGD 477
35 PL8302 +1.0VSUS 49
24.R5804 VCCIO_PWRGD 477
23.R5816 VCCST_PWRGD 513
20.R5810 PM_SUSB# 585
2 .PC8705 +5VAO 512
30 PL8101 VCCGT 9
6.PSL8703 +5VSUS_ON 586
25.D2501 IMVP8_PWRGD 571
6.PSL8702 +3VADSW_ON 575
21.PD8604 +1.2V_ON 578
26.R2539 PM_PWROK 751
21 PD8801 SUSC_EC# 539
7.D2501 +3VA_DSW_PWRGD 502
36 PL8901 P_CHG_LX_30 185
34 PL8702 +5VSUSO 462
33.PL8701 +3VADSWO 353
22.R5757 SUSB_EC# 744
32 PL8601 +1.2VO 46
Signal Measure Point-Top
1.
PC8729 AC_BAT_SYS 482
27.R2538 PM_SYSPWROK 737
5.D2505 ME_AC_PRESENT 747
17.C6506 PWR_SW# 702
13.VT60 +3VSUS_PWRGD 480
8.R2553 DPWROK_EC 703
12.VT858 +1.0VSUS_PWRGD 556
14.R2542 PM_RSMRST# 745
11.VT842 +1.8VSUS_PWRGD 608
18.SL2518 PM_PWRBTN# 587
2 .PSL8704 +3VAO 457
15.R2513 PCH_SUSACK# 552
14.R2542 PM_RSMRST#_PCH 793
28.SL3302 BUF_PLT_RST# 504
4.D3201 EC_RST# 759
16.R3040 SUSWARN#
692
11.VT837_P_3VSUS_PWRGD 479
9. VT313 PM_SLP_SUS# 595
10. VT824 +VSUS_ON 521
3.Q3202 PS_ON 465