Sony XBR-55X900H Service Manual page 22

2020/06/27 06:31:32 (GMT+09:00)
1.2 No Power u-com Failure
BM5S Board OLED Model
TCON_24_ON
TCON_12_ON
G-Board
12.7V_MAIN
12.7V_AUDIO
Q400
Tr SW
SOC (IC5000)
#pin1 NRST
#pin15 JIG_RST
#pin19 RETRY_TRG
は、サービスのチェック手順に
出てこないので、非表示
SECTION 1
T R O U B L E S H O O T I N G
VDD
3.3V_STBY #pin6
BL_ON
IC413
#pin7
POWER_ON
#pin10
R450
12V_MON
#pin16
R444
ADC port
3.3V_STBY
GND
TYPE_DET
#pin17
DC_MON
#pin11
ADC port
GND
GND
SECTION 2
S E C T I O N 3
PGOOD_1
#pin9
P_ON_#1
#pin12
P_ON_#2
#pin13
P_ON_HL
#pin18
OPWRSB
#pin2
ORESETB
#pin14
DC_OFF_DET
#pin3
X_BL_MUTE
#pin8
MIC_PWR_ON
#pin20
SECTION 3 SECTION 4
P-on u-com control signal path summary
DDC : 0.8V_M5_CORE (IC804)
DDCs : 0.9V_BE_DDC_1 (IC4802), 0.9V_BE_DDC_2
(IC4803), 0.8V_BE (IC4809), 0.7V_BE (IC4810)
DDCs : 5V_MAIN&5.0V_VBUS&5V_AUDIO (IC600),
3.3V_MAIN &3.3V_AUDIO(IC601), 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)
LDOs : 5.0V_MAIN_H (IC400), 3.3V_MAIN_H (IC403)
FET SW : 3.3V_TU_P (Q602/Q603)
FET SW : 12.7V_LNB (Q604/Q605)
SW IC : 3.3V_TU_P (Q609 – IC604)
USB VBUS SW (IC3803/IC3804)
SOC Muffin 5 (IC1000)
SECTION 5 SECTION 6
22
SYS SET