Transcript Failure Analysis for L3D MLCC burned issue (EPSON)

AMD Danube Platform
Introduction
Chini Yang
21.Sep. 2010
Agenda
AMD Danube Platform Introduction
CPU , NB (RS880M), SB(SB820M)
N61DA Block Diagram
Product Introduction
Power Sequence
Problems
Q&A
AMD CPU S1g4
AMD CPU S1g4
S1g4 processor support all S1g3 processor features.
SB820M
AMD SB820M support internal clock Gen.
CPU
NBLINK_RCLKP/N
CPU_CLKP/N
RS880M
A-LINK
100MHz
200MHz
100MHz
100MHz
GLAN
AR8131
CLK_PCIE_GLAN_P/N_PCH
WLAN
CLK_PCIE_WLAN_PCH
100MHz
33MHz
LPC_CLKDBG
Debug Connect
SB820M
CLK_PCIE_PEG_VGA
GPU
HT_REFCLKP/N
H/T
33MHz
100MHz
LPC_CLKEC
EC
Clock Generation (conti.)
MAIN BOARD TOP
MAIN BOARD BOT
Product Introduction- Outline
16” Display (Frameless)
16” Display (Frame)
Hotkeys
PWR Button
348mm Keyboard
Smartpad
Product Introduction- IO Port
Left Side IO Port
Lock
DC-in
Vent
New Card
CRT
LAN
HDMI
USB WLAN Switch
Right Side IO Port
Audio USB
ESATA
ODD
USB
Product Introduction- IO Port
Front Side IO Port
Card Reader
Back Side IO Port
Battery
Power Sequence
AC mode: VSUS_ON assert after EC_RST#
PWR_SW#
+3VA
8'
18
LDTSTOP#
RS880M
8
SUSC_EC#
17
SLP_S5#
ALL_SYSTEM_PWRGD
LDT_PG
EC
10
19
9
PM_SUSB#
SUSB_EC#
LDT_RST#
9'
KBRST#
VRM_PWRGD
10
BUF_PLT_RST#
18
RC_IN#
CPU_VRON
A_RST#
CPU_PWRGD
POWERGOOD
(North Bridge)
CPU_LDT_RST#
SYSRESET#
CPU_NB_LDT_STOP#
NB_PWRGD
BUF_PLT_RST#
PERSTb
ParkXT
(Discreted GPU)
PM_PWROK
12
15
NB_PWRGD
16
11
14
SLP_S3#
SB820M LDT_STP#
(South Bridge)
KBRST#
+CPU_VDD
+CPU_VDDNB
+CPU_VDDR
+CPU_VDDIO
+2.5VS
VLDT
7
A_RST#
5
PM_PWRBTN#
4
+5VSUS_+3VSUS_PWRGD
PM_RSMRST#
VSUS_ON
PM_SUSC#
SUS_PWRGD
AMD S1g4 CPU
LDTSTOP_L
EC
3
+5VSUS
+3VSUS
+1.1VSUS
+12VS
+5VS
+3VS
+1.8VS
+1.5VS
+1.1VS
+0.75VS
RESET_L
+3VA_EC
+5VA
+12V
+5V
+3V
+1.5V
PWROK
Power On
SWITCH
2
1
AC_BAT_SYS
6
EC_RST#
BAT Mode: VSUS_ON assert after Press button
PWR_GOOD
13
CLK GEN
DN
R10
Title : POWER SEQUENCE
ASUSTeK.Computer.INC
Size
Custom
Engineer:
UEI LEE
Project Name
Rev
N61DA
Date: Tuesday, Apr il 13, 2010
2.0
Sheet
94
of
95
Power Sequence
Power Sequence
T1:
Power Sequence
T13
Power Sequence
Power Sequence
1.The system cann’t be powered on, and the adaptor LED indication
flicker.
Here is somewhere short, check all power rails whether have been short to GND.
2.The system cann’t be powered on, and power LED not lighten.
Maybe The BIOS ROM content has been wrecked.
+3VA powered? Why not VSUS power? Power IC or MOSFET or Diode burnout?
3.The power LED lighten, but the system cann’t bring up to DOS.
plug in debug card, view the 80 post code, for example:
80 code no motion, show 00 –> CPU not work –>measure power sequence
black screen, show d0~d5 –> memory plug failed or memory broken
black screen, show F0~F2 –> one DIMM slot failed
4.The system often show blue screen suddenly in OS
un-install drives (even enter safe mode), find whether a device driver installed wrongly cause it
un-plug device to check
BIOS updated? Care for BIOS release note
check FAN status/thermal module –> over temperature?
and so on……
• When we push down the power button but POWER LED not light or flicker a moment
• We can check the ALL_SYSTEM_PWRGD signal.
If the ALL_SYSTEM_PWRGD is low, we can remove those components
location”1、2、3、4、5” independently .
To find the abnormal behavior POWERGOOD and then we can fix the relation circuit.
• IF we push down the power button, PWR LED Keep light but BIOS code:00
• then follow the power on sequence detect the abnormal signal and fix the relation circuit.
Problems
E-sata device can not be detected.
check the cable plug in correctly.
WLAN could not turn on.
Check WLAN switch didn't assemble right
Shut down automatically after power on
Check thermal pip and fan assemble correctly or not
Problems
Screen not display after power on but debug
card can run code
Check LVDS cable assemble correctly or not
Check LVDS cable is defect
Q&A
THE END
THANKS