No Power U-Com Failure; P-On U-Com Control Signal Path Summary - Sony KD-55A9G Service Manual

2019/04/19 01:55:00 (GMT+09:00)

1.2 No Power u-com Failure

BM3J19 Board LCD Model
G-Board
+12V_MAIN

P-on u-com control signal path summary

+3.3V_STBY #pin6
Vdd u-com
supply
voltage
BL_ON
#pin7
POWER_ON
#pin10
#pin16
R808
12V_MON
ADC port
GND
#pin11
DC_MON
ADC port
GND
TV Business Division
PGOOD_1
#pin9
P_ON_#1
#pin12
P_ON_#2
#pin13
P_ON_HL
#pin18
OPWRSB
#pin2
ORESETB
#pin14
DC_OFF_DET
#pin13
X_SYSTEM_RST
#pin20
OPCTRL4 (BL_MUTE)
#pin8
21
DDC : 1.0V_M3_CORE (IC608), 1.0V_M3_CPU (IC609),
1.0V_M_GPU (IC610)
DDCs : 0.9V_BE (IC6602), 0.8V_BE (IC6604)
DDCs : 5V_MAIN&5.0V_VBUS&5V_AUDIO (IC402),
3.3V_MAIN &3.3V_AUDIO(IC403),
1.8V_TU (IC405), 1.05V_M3_A (IC604),
1.5V_BE _DDR(IC6601), 1.8V_TU_P(IC401)
LDOs : 1.2V_HDMI (IC400),1.8V_BE_LDO(EWBS:IC6600)
1.8V_EMMC(IC607)
DDR VTT/Vref Generator : IC1800
FET SW : 3.3V_STBY_TU_P (Q404/Q403)
FET SW : 12.7V_LNB (Q408/Q409)
USB VBUS SW (IC4602)
SOC Muffin 3 (IC1000)
SOC Muffin 3 (IC1000), Panel Power ON Choice(IC801)
X_BE_RST(IC1202)
SNIM_RST→Tuner (TU3002/TU3003)
SOC Muffin 3 (IC1000)
BM3J
21
SYS SET