Sony XR-65X95K Service Manual page 17

TROUBLESHOOTING
1.2 No Power U – com Failure
3.3V_STBY
LD-Board
G-Board
12.7V_MAIN
R450
3.3V_STBY
GND
Main Board
VDD
#pin6
BL_ON
#pin19
POWER_ON
#pin20
12V_MON
#pin14
ADC port
GND
TYPE_DET
#pin13
CAMERA_PWR_ON
#pin8
DC_MON
#pin23
ADC port
GND
GND
PGOOD_1
#pin21
P_ON_#1
DDCs : 0.9V_BE_DDC_1 (IC4802), 0.9V_BE_DDC_2 (IC4803),
#pin18
DDCs : 5V_MAIN&5.0V_VBUS&5V_AUDIO (IC600 or IC610),
P_ON_#2
#pin17
LDOs : 3.3V_MAIN_H (IC403)
FET SW : 3.3V_TU_P (Q602/Q603)
P_ON_HL
#pin10
OPWRSB
#pin4
ORESETB
#pin16
DC_OFF_DET
#pin7
X_BL_MUTE
#pin22
P-on u-com control signal path summary
DDC : 0.8V_M5_CORE (IC804)
0.8V_BE (IC4809), 0.7V_BE (IC4810)
1.0V_TU_P (IC603),
1.8V_M5 (IC807), 1.0V_M5 (IC808),
0.8V_M5_CPU (IC810), 0.8V_M5_GPU (IC811)
1.8V_BE_DDC (IC4800)
5.0V_VBUS_CAMERA(IC611)※Internal camera model only
FET SW : 12.7V_LNB (Q604/Q605)
SW IC : 3.3V_TU_P (Q609 – IC604)
USB VBUS SW (IC3801-IC3806)
SOC Muffin 5 (IC1000)
17
SYS SET