Sony KD-75X7800F Service Manual page 15

1.2 No Power u-com Failure
+3.3V_STBY
Type Detection Cir.
G-Board / LD2
G-Board or LD2
+12V_MAIN
POWER_MAI
N
#pin6
Vdd Ucom
supply
voltage
TYPE_DET
#pin17
BL_ON
#pin7
POWER_ON
#pin10
#pin16
R426
12V_MON
ADC port
GND
#pin11
R437
DC_MON
ADC port
GND
POWER_ON
PGOOD_1
#pin9
P_ON_#1
#pin1
2
P_ON_#2
#pin13
P_ON_HL
#pin18
OPWRSB
#pin2
ORESETB
#pin14
DC_OFF_DET
#pin3
X_SYSTEM_RST
#pin2
0
X_BL_MUTE
#pin8
P-on u-com control signal path summary
DDC : +12V_MAIN (IC1000)
DDC : +1.0V_M2 (IC604)
DDCs : +1.8V_TU (IC405), +1.0V_BE (IC404)
DDCs : +5V_MAIN (IC402), +3.3V_MAIN (Q406/Q407),
+1.5V_FRC (IC409), +0.95V_FRC (IC410)
LDOs : +1.05V_M2_A_1 (IC603),
+1.05V_M2_A_2 (IC606), VCC3IO_EMMC
(IC607)
DDC : +12V_LNB (Q408/Q409)
USB VBUS SW (IC3406, IC3407, IC3408)
SOC Muffin 2 (IC1000)
Tuner (CN2800)
SOC BE (IC4001)
LD2
BCH
15
SYS SET