Sony KD-43X85K Service Manual page 24

TROUBLESHOOTING
1.3 No Power DDCON/LDO
Board Operation IC Ref
DC/DC IC414
LDO IC403
DC/DC IC600 5V_MAIN/5.0V_VBUS/5V_AUDIO
DC/DC IC607
DC/DC IC603
DC/DC IC801
DC/DC IC802
DC/DC IC803
BM5A
DC/DC IC804
LDO IC806
DC/DC IC813
DC/DC IC812
LDO IC809
DC/DC IC810
DC/DC IC811
LDO IC2201
Voltage supply Output ref.
5.0V_STBY_H C482
3.3V_MAIN_H C416
C610
3.3V_DDC_OUT C656
1.0V_TU_P C630
1.1V_M5_DDR C806
0.9V_M5_STBY C809
1.8V_STBY C812
0.8V_M5_CORE C846
1.8V_M5_ET_STBY C818
1.8V_M5 C904
1.0V_M5 C898
3.3V_M5_STBY C816
0.8V_M5_CPU C861
0.8V_M5_GPU C874
1.8V_EMMC C2216
Enable pin Enable source
R545
IC403 Pin#3 P_ON_#2
IC600 Pin#15 P_ON_#2
IC607 Pin#11
P_ON_#2 or IC1000 #AL18
IC603 Pin#4
(EWS_PWR_ON)
IC801 Pin#4 R804/R907 (3.3V_STBY)
IC802 Pin#4 R804/R907 (3.3V_STBY)
IC803 Pin#4 R804 (3.3V_STBY)
IC804 Pin#8 P_ON_#1
IC1000 #AN19
IC806 Pin#3
(ETHER_PWR_EN)
IC813 Pin#4 P_ON_#2
IC812 Pin#4 P_ON_#2
R917 R917 (3.3V_STBY)
IC810 Pin#19 P_ON_#2
IC811 Pin#19 P_ON_#2
IC2201 Pin#3 P_ON_#1 or ORESETB
Fuse Vcc ref.
Vin - C479
- C415
F600 C601
Vin F604 C665
- C628
- C801
- C807
- C810
F802 C831
- C817
F807 C902
F805 C896
- C815
F803 C855
F804 C868
- C2214
P_ON_#1 : P-on u-com IC401 #pin12
P_ON_#2 : P-on u-com IC401 #pin13
ORESETB : P-on u-com IC401 #pin14
24
SYS SET