H81M-K Repair Guide BLOCK DIAGRAM 09/09 2013 Leilei52_Chen CSC-GRMA POWER FLOW POWER ON SEQUENCE Frequency Flow Voltage Measure Point multi meter “VΩmA” port touch here Pink number is Diode resistance to GND(without any part on MB)multimeter type DH-1240 EATX12V 12V_CPU 957 PL3 PU700 +3VSB VCORE 478 360 PU700 +5VSB 523 PC404 +1.5PCH 320 PU503 VTT_DDR 500 PL505 +1.5VDUALL231 EATXPWR +12V 108 EATXPWR EATXPWR +3V 50 +5V 469 PQ600 +12/5VDUAL 494 Signal Measure Point 4.ORN4 O_RSMRST# 589 2.AC POWER SW ON 4.1/8.OU1R43 6.OR25 O_IOPWRBTN# S_SLP_S4# 3.5VSB,3VSB 549 10.1 12V,5V,3V 573 16.VCORE 18.L1C14 S_PLTRST# 477 12.ORN2 O_PWROK 635 4.2/9.OU1R32 S_SLP_S3# 547 15. PR104 H_SVID_CLK 19. PCIEX16 O_X16_RST# 626 15. PR105 15. PR106 19. PCIEX1_1 O_X1_1_RST# 668 H_SVID_DAT H_SVID_ALERT# 551 18.ESDC3 H_CPURST# 353 14.HR27 S_CPUPWRGD 353 13.HR12 S_DRAMPWROK 497 17.PQ803 1.SR19 S_ RTCRST# 786 1.SR19 S_ SRTCRST# 787 5.PANEL PWRBTN#_PANEL 1096 9.EATXPWR ATX_PSON# 618 P_VRMPWRGD 625 554 551