Transcript ASUS Powerpoint Template

Power On Sequence
Sephiroth Kwon
GRMA
26-05-2009
OUTLINE
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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
+5
+ 12
5VSB to 3VSB
Linear Reg.
+5
5VSB
-5
PWOK
GND GND
5VSB
1
Cap./
Res.
PWRBTN
3VSB
PANNEL
1/0
1
GND + 5
GND GND
0
PSON + 5
GND GND
- 12V + 3V
IT8282
+ 3V
PSON
0
+ 3V
PSON Pull low circuit
PWRBTN
0
Super I/O
South
Bridge
General Power On Sequence
+5
+ 12
+5
5VSB
-5
PWOK
CPU SOCKET
(2)
CPURST
GND GND
GND + 5
PG1
IDERST
GND GND
Circuit
IDE SLOT
(4)
PWROK
PSON + 5
PCIRST
(3)
GND GND
PCI SLOT
North Bridge
- 12V + 3V
+ 3V
(5)
+ 3V
Circuit
PSON
South Bridge
(1)
PANNEL
PWRBTN
Power On Sequence (P5Q3 Sample)
S_PLTRST
S_PLTRST
GMCH
10
B_ATX_PWROK POWER
H_CPURST#
USER PRESS
CRTL+ATL+DEL
SUPPLY
O_PWROKO_PWROK_NB
7
7
Super I/O
O_PWROK
O_PWRBTN
#
S_SLPS
4
7
O_PCIRST#_SLOT
8
ICH10R
User clear
CMOS
VA6308P
VCORE
8
TPM
JMB363
1
8
S_PLTRST#
H_CPUPWRGD
LAN
PCI_PCIEX1
9
S_PCIRST#
S_TRCRST#
CPU
4
3
#
RSTCON#
5
S_SLPS
User
press
Rest
button
5
O_RSMRST#
EPU
P_VRM_GD
7
2
O_KB_RST#
O_PWRBTNIN#
9
O_PCIRST#_PCIEX16_12 PCI_PCIEX16
O_PCIRST#_PCIEX1_123
3
USER PRESS
POWER BTN
6 O_PSON#
PCI SLOT
Power On Sequence(M3N78-VM)
14. CPU_RST#
13. PCI_RST#
CPU
PCI SLOT 1,2
12. CPU_PWROK#
13. PCIE_RST#
10. 1.2VHT_EN
MCP78
PCIE X1
9. VCORE_PG
8. VCORE_EN
3
1
.RSMRST#
4
.SUSC#
4
.SUSB#
.SIO_PWRBTN#
6. 12V
11
.SIO_RST#
.PWROK_SB
VRM
6. 3V
7
6. 5V
ATX
Power
5. PSON#
SIO
ITE8712F
PCIE X16
13.PCIERST#
IDE Port
11. IDE_RST#
2. PWR_BTN#
No Power Problem Debug Point
POWER UP PROBLEM
1. Check if any burned components or traces
2. Check no voltages short with GND such as +5, +12 , +5VSB, +3, 12, +3VSB, VCORE 1.5V, 2.5V
3. Check Battery voltage
4. Check X’tal 32.768 KHz
5. Check 5VSB ,3VSB, PWRBTN#
6. Check PSON signal & related circuit
Thank You!