Apr/10/ 2015 John_jin X550CC Repair Guide -GTSD BLOCK DIAGRAM POWER FLOW POWER ON SEQUENCE Signal Measure Point-Bottom 2.PSL8801 AC_IN_OC# 566 33PSL8002 VR_SVID_ALTER 81 37 PL8801 +CHG_LX 515 PJP8002 +AC_BAT_SYS 489 38 PL8001 +VCORE 43 PL80014 +VGFX_CORE 41 PL8502 +NVVDD 82 32.VT282 H_CPUPWRGD 454 39 PL8200 +VTT_CPU_VO 31.R0321 H_DRAM_PWRGD 202 42 PL8401 +1.8VO 144 40 PL8301 +1.5VO 280 11 PL8101 +5VO 503 36R4517 BUF_PLT_RST# 480 12 PL8100 +3VO 401 PQ8108 5VSUS_ON 748 23.PQ9106 SUSC_EC # 622 VA 490 13 D2202 3VSUS_PWRGD 551 27.R2207 ME_PWROK _PCH 752 24.PQ9105 SUSB_EC # 487 16 R2218 PM_RSMRST# 592 VA 490 10.PSL8102 12VSUS 1540 17 D2207 ME_AC_PRESENT 592 35.RN2206 PM_SYSPWROK 743 25.C7706 +1.05VS_PWRGD 484 PQ8108 3VSUS_ON 618 30.RN2206 PM_PWROK 748 D3202 +3VA_EC 488 D3202 EC_RST# 705 Signal Measure Point-Top 18 C6202 PWR_SW# 1197 29.PR8321 ALL_SYS_PWRGD 482 28.PR8405 +1.8V_CPUPWRGD 483 26.SL5807 VRM_CPUPWRGD 541 34.SL5807 CORE_CPUPWRGD 541 7.T2218 SLP_SUS#_R 380 14 D5801 5VSUS_PWRGD 569 PSL8100 +5VAO 555 20.R2233 SLP_LANA#_R 394 19.R3003 PM_PWRBTN# 551 22.RN3006 PM_SUSB# 458 21.VT1133 PM_SUSC# 746 PSL8101 +3VAO 488 15 Q3002 ME_SUSPWRDNACK 374