Sony KD-49X7 D Series Service Manual page 23

1.2 No Power u-com Failure
BM2/DPA Board Model
+3.3V_STBY
G-Board or LD
G-Board or LD
or IC403 on DPA
+12V_REG
P-on u-com control signal path summary
#pin1
Vdd Ucom
supply
voltage
BL_ON
#pin18
POWER_ON
#pin19
#pin7
R430
MAIN_VC
C
ADC port
GND
OPWRSB
#pin2
ORESETB
#pin12
AC_OFF_INFO
#pin5
PANEL_PWR_ON
#pin10
X_SYSTEM_RST
#pin16
P_ON_VBUS
#pin1
1
#pin9
PGOOD_
1
P_ON_#1
#pin1
3
P_ON_#2
#pin14
DC_OFF_DET
#pin3
P_ON_LNB
#pin15
X_BE_RST
#pin17
X_LED_MUT
#pin8
E
BM2 or DPA Board
SOC Muffin 2 (IC1000)
Tuner (TU2801 , TU2802, TU2803)
DDC: +5.0V_VBUS (IC402)
DDC : +1.0V_M2 (IC604)
DDCs : +1.8V_TU (IC405), +1.1V_TU_SKP (IC406)
DDCs : +5V_MAIN (IC404), +3.3V_MAIN
+1.0V_BE (IC4003/DPA)
(IC409/DPA),
+1.5V_BE (IC4001/DPA) , +1.1V_BE
(IC4002/DPA)
LDOs: +1.05V_M2_A_1 (IC603),
+1.05V_M2_A_2 (IC606), +1.8V_BE
DC_OFF_DET (IC400)
(IC4004/DPA)
+12V_LNB (Q408/409)
SOC BE (IC4000/DPA)
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