No Power U-Com Failure - Sony KD-55A9F Service Manual

1.2 No Power u-com Failure

BM3 Board OLED Model
+3.3V_STBY
DPJ-Board (IC802)
G-Board
+12V_MAIN R805
R806/Q80
AC_OFF_DET_OUT
1
from SOC BE (IC7000)
on DPJ
#pin6
Vdd u-com
supply
voltage
#pin9
#pin1
BL_ON
#pin7
POWER_ON
#pin10
#pin13
#pin16
12V_MON
ADC port
#pin18
#pin2
GND #pin14
#pin3
#pin11
DC_MON
#pin20
ADC port
#pin8
GND
DDC : 1.0V_M3_CORE (IC608), 1.0V_M3_CPU (IC609),
PGOOD_1
P_ON_#1
DDCs : 0.9V_BE (IC6602 on DPJ), 0.8V_BE (IC6604 on DPJ)
2
DDCs : 5V_MAIN (IC402), 3.3V_MAIN (IC403/IC804 on DPJ),
1.5V_BE (IC6601 on DPJ), +1.1V_BE (IC4002 on DPJ)
P_ON_#2
LDOs : 1.2V_HDMI (IC400), 1.8V_BE (IC 6600 on DPJ)
DDR VTT/Vref Generator : IC1800
P_ON_HL
OPWRSB
ORESETB
DC_OFF_DET
X_SYSTEM_RST
OPCTRL4 (BL_MUTE)
1.0V_M_GPU (IC610)
1.8V_TU (IC405), 1.05V_M3_A (IC604),
FET SW : 12V_LNB (Q408/Q409)
USB VBUS SW (IC4602)
SOC Muffin 3 (IC1000)
Tuner (CN3000 #62pin)
SOC Muffin 3 (IC1000)
19
BM3 or DPJ
SYS SET