IFcon Section Flow Chart(2/2)
Check of IFcon reset input port
Is the voltage of
IC1203
"H"(3.3V)?
No
Is there a problem with the mounting
condition of
R1212, C1221 or R1208
?
Yes
Yes
Pcont output port check
Check of each power supply control port
when the power is ON
* Corresponding output
IC1203 pin15 PCONT1
IC1203 pin 17PCONT2
IC1203 pin21 PCONT3
IC1203 pin23 PCONT_CORE
IC1203 pin24 ATA_PCONT1
SW3.3V and SATA_
1.2VA
output
CORE_1.1V output
DDR2_1.8V system output
DCSW5V
FE_SW5V
No
Check for shorts at each port
No
All the ports go "H" within 2 to 10 ms, but
soon go "L"
No
Do the symptoms improve after checking the
soldering and pattern of
IC1203
?
No
Power supply output check
Check the output of the corresponding
voltage
SW3.3V Short circuit operation check
No
To Power Supply (System) flowchart
No
When
IC1203 pin15 PCONT1
has gone "H",
is the SW3.3V voltage output?
Yes
Replace
IC1203
or replace the MB board
Yes
Check SYS_RST signal output
Is
IC1203 pin51
"H"(3.3V)?
The mounting condition of
R1156
are OK?
No
Replace
IC1203
and the MB board
Yes
Check the communication with the host
CPU (SYSCON_REQ signal check)
Do cyclical "H" and "L" communication
waveforms come to
IC1203 pin30
?
No
Is there a problem with the mounting
conditon of
R1262
?
No
Do the symptoms improve after replacing
IC101?
No
Yes
Check the communication with the host
CPU (Serial communication signal check)
Do cyclical "H" and "L" communication
waveforms come to
IC1203 pin47, pin 48
and pin49?
No
Is there a problem with the mounting
conditon of
RB1240, R1243 and R1246
No
Replace IC1203 or replace the MB board
Is the voltage at the "H" level(3.3V)?
SW3.3V and SW5V
1.2VA and CORE_1.1V
DAC3.3V, 3.3VA
DCDC6V, DCDC4V
FE_SW12V nad FE_SW5V
A
B
9-5
IC1203 pin2 ATA_PCONT2
Yes
Yes
Yes
Yes
Replace IC1203 or replace MB board
BDP-S485
