Transcript ASUS Powerpoint Template

LAN
Sephiroth Kwon
GRMA
26-05-2009
OUTLINE
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Diagram
Voltage
Clock
Head Signal Description
Repair Flow Chart
LAN - Diagram
Reset
South
&North
Bridge
Controller
IC
CLOCK
VOLTAGE
How many kinds of
voltage are there?
And where are they
come from?
MAC
Address
EEPROM
OR
FLASH
3VSB
How many kinds of clock
signals are there?
LAN – MAC Address
SMBus
Interface
SPI
Interface
LAN - Voltage
• There are 3 way to produce the voltage of LAN
IC exclude 3VSB.
– Internal regulator
– Internal linear regulator
– External regulator
LAN - Internal regulator
LAN - Internal linear regulator
LAN - External regulator
LAN - Clock
LAN IC
C_PCIE_L1
C_PCIE_L1#
REFCLK_P
REFCLK_N
CKTAL1
CKTAL2
25Mhz
It’ s come from the
main clock .
If this pair of clock
signal is error, please
check the main clock IC.
LAN Port
Connect to Port
LAN - Head Signal Description
LAN-Repair Flow Chart
START
Visual Inspection
check Lan connector & related components
are not damaged.
NG
Change damaged
connector / component
NG
Check Lan Voltage 3VSB,
2.5VSB, 1.2SB....
OK
OK
Measure Lan Voltage
Change NG transistor (Q) or
fix any trace open
OK
NG
NG
Measure Lan Clock
Check Lan 25Mhz
& PCI CLK 33Mhz or
PCIE CLK
Change NG X’TAL /CLK
Gen. Fix any trace open
NG
Measure Lan AD signals(PCI)
Check slot signals,
compare with good MB
Fix any trace / remove any
NG PCI device
OK
NG
NG
Change NG Transformer
Measure Lan Transformer
OK
NG
OK
NG
Change SB
OK
NG
OK
Change Lan Chip
OK
Finished
OK
OK
LAN-Repair Flow Chart (Lan Mac ID error)
START
No
Mac ID error
Mac can be Check ?
NG
Re-write Mac ID
Re-check Mac ID again
Check Lan EEPROM 3VSB
Check & fix any
3VSB trace open
OK
Yes
NG
OK
NG
NG
Go to check Lan
(refer to previous
page)
OK
Change EEPROM /
Re-Write Mac again
Change EEPROM /
Re-Write Mac again
NG
OK
Go to check Lan
(refer to previous page)
Finished
OK
Thank You!