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TROUBLESHOOTING
1.3 No Power DDCON/LDO – XR-83A80*
Board
Operation
IC Ref
DCDC
IC418
LDO
IC403
DC/DC
IC600
DC/DC
IC601
DC/DC
IC603
DC/DC
IC801
DC/DC
IC802
DC/DC
IC803
DC/DC
IC804
LDO
IC806
BM5S21
DC/DC
IC807
DC/DC
IC808
LDO
IC809
DC/DC
IC810
DC/DC
IC811
DC/DC
IC4800
DC/DC
IC4801
DC/DC
IC4802
DC/DC
IC4803
DC/DC
IC4809
DC/DC
IC4810
Voltage supply
Output ref.
5.0V_STBY_H
C508/JL1212
3.3V_MAIN_H
C416/CL402
5V_MAIN/5V_AUDIO
C610/JL601
3.3V_MAIN/3.3V_AUDIO
C619/JL603
1.0V_TU_P
C630/CL607
1.1V_M5_DDR
C806/JL801
0.9V_M5_STBY
C809/CL803
1.8V_STBY
C812/CL811
0.8V_M5_CORE
C846/JL803
1.8V_M5_ET_STBY
C818/JL808
1.8V_M5
C823/JL811
1.0V_M5
C829/JL813
3.3V_M5_STBY
C816/CL831
0.8V_M5_CPU
C861/JL816
0.8V_M5_GPU
C874/JL818
1.8V_BE_DDC
C4805/JL4801
1.1V_BE
C4813/JL4803
0.9V_BE_DDC_1
C4820/JL4805
0.9V_BE_DDC_2
C4828/JL4807
0.8V_BE
C4860/JL4819
0.7V_BE
C4878/JL4821
Enable pin
Enable source
R557
R557(3.3V_STBY)
R413(shorted)
R600(shorted)/CL604
R658/CL605
R658(1.8V_BE_DDC)
P_ON_#2 or IC1000 #AL18
R631(shorted)/JL607
(EWS_PWR_ON)
R913(shorted)
R804/R907 (3.3V_STBY)
R908(shorted)
R804/R907 (3.3V_STBY)
R822(shorted)
R804 (3.3V_STBY)
R849(shorted)/CL816
IC1000 #AN19
R832(shorted)
(ETHER_PWR_EN)
R833(shorted)/CL827
R839(shorted)/CL828
R917
R917(3.3V_STBY)
R914/CL829
R915/CL830
R4801(shorted)/CL4816
R4907/CL4817
R4907(1.8V_BE_DDC)
R4819(shorted)/CL4818
R4827(shorted)/CL4819
R4849(shorted)/CL4808
R4865(shorted)/CL4811
Fuse
Vcc ref.
-
P_ON_#2
-
P_ON_#2
F600
F601
-
-
C801/CL819
-
C807/CL822
-
C810/CL824
P_ON_#1
F802
-
C817/CL826
P_ON_#2
F800
P_ON_#2
F801
-
P_ON_#2
F803
P_ON_#2
F804
P_ON_#2
F4800
F4801
P_ON_#1
F4802
P_ON_#1
F4803
P_ON_#1
F4804
P_ON_#1
F4805
P_ON_#1 : P-on u-com IC401 #pin12
P_ON_#2 : P-on u-com IC401 #pin13
C505
C415
C601
C618
C628
C831
C822
C828
C815
C855
C868
C4803
C4812
C4819
C4827
C4845
C4863
31
SYS SET
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