Power On Sequence Sephiroth Kwon GRMA 26-05-2009.

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Presentation transcript:

Power On Sequence Sephiroth Kwon GRMA 26-05-2009

OUTLINE General Power On Sequence Power On Sequence (P5Q3) Power On Sequence (M3N78-VM) No Power Problem Debug Point

General Power On Sequence PSON# ATX TOP VIEW PWRBTN 1/0 PANNEL + 5 + 12 5VSB to 3VSB Linear Reg. Cap./ Res. 3VSB 1 + 5 5VSB - 5 PWOK 5VSB 1 GND GND GND + 5 GND GND PSON + 5 GND GND South Bridge Super I/O IT8282 - 12V + 3V + 3V + 3V PSON Pull low circuit PSON PWRBTN

General Power On Sequence + 12 5VSB PWOK GND + 5 + 3V - 12V PSON - 5 CPU SOCKET (2) CPURST (5) PG1 IDERST Circuit IDE SLOT PWROK (4) (3) PCIRST PCI SLOT North Bridge Further describe, applicability, predigest Circuit PSON South Bridge (1) PWRBTN PANNEL

Power On Sequence (P5Q3 Sample) S_PLTRST GMCH H_CPURST# B_ATX_PWROK POWER SUPPLY 10 USER PRESS CRTL+ATL+DEL O_PWROK O_PWROK_NB 7 O_PSON# 6 Super I/O O_PCIRST#_PCIEX16_12 9 PCI_PCIEX16 O_PCIRST#_PCIEX1_123 O_PCIRST#_SLOT 9 USER PRESS POWER BTN 3 O_PWRBTNIN# PCI_PCIEX1 O_RSMRST# 2 S_SLPS3# 5 S_SLPS4# 5 O_PWRBTN 4 O_PWROK 7 O_KB_RST# PCI SLOT 7 P_VRM_GD EPU User press Rest button RSTCON# S_PCIRST# 8 ICH10R TPM S_TRCRST# 1 JMB363 User clear CMOS VA6308P 8 H_CPUPWRGD VCORE S_PLTRST# 8 CPU LAN

Power On Sequence(M3N78-VM) ATX Power SIO ITE8712F MCP78 CPU PCI SLOT 1,2 PCIE X1 VRM PCIE X16 IDE Port 13. PCI_RST# 13.PCIERST# 11. IDE_RST# 2. PWR_BTN# 13. PCIE_RST# 1.RSMRST# 4.SUSC# 3.SIO_PWRBTN# 4.SUSB# 5. PSON# 6. 12V 6. 5V 6. 3V 11.SIO_RST# 7.PWROK_SB 8. VCORE_EN 9. VCORE_PG 10. 1.2VHT_EN 14. CPU_RST# 12. CPU_PWROK#

No Power Problem Debug Point POWER UP PROBLEM Check if any burned components or traces Check no voltages short with GND such as +5, +12 , +5VSB, +3, -12, +3VSB, VCORE 1.5V, 2.5V Check Battery voltage Check X’tal 32.768 KHz Check 5VSB ,3VSB, PWRBTN# Check PSON signal & related circuit

Thank You!