21
TROUBLESHOOTING
P-on u-com control signal path summary
1.2 No Power u-com Failure
P-on u-com
IC401
G-Board
or
LD-Board
DDC : 0.8V_M5_CORE (IC804)
DDCs:
5V_MAIN&5.0V_VBUS&5V_AUDIO (IC600),
1.0V_TU_P(IC603), 1.8V_M5 (IC813), 1.0V_M5 (IC812),
0.8V_M5_CPU (IC810), 0.8V_M5_GPU (IC811), 1.8V_BE_DDC
(IC4800)
LDOs:
3.3V_MAIN_H (IC403)
FET SW :
3.3V_TU_P (Q602), 3.3V_MAIN &3.3V_AUDIO(Q611),
SOC Muffin 5 (IC1000)
P_ON_#1
PGOOD_1
P_ON_#2
OPWRSB
R457
#pin14
#pin9
#pin12
#pin13
#pin10
#pin6
3.3V_STBY
POWER_ON
ORESETB
#pin7
BL_ON
DC_OFF_DET
#pin18
P_ON_HL
FET SW : 12.7V_LNB (Q604)
SW IC : 3.3V_TU_P (Q609)
USB VBUS SW (IC3803/IC3804)
#pin11
ADC port
#pin8
12.7V_21V_AUDIO
R462
#pin16
ADC port
R444
X_BL_MUTE
#pin3
12.7V_MAIN
R450
VDD
12V_MON
GND
TYPE_DET
DC_MON
GND
#pin17
GND
3.3V_STBY
R445
R446
#pin2
DDCs:
0.9V_BE_DDC_1 (IC4802), 0.9V_BE_DDC_2 (IC4803), 0.8V_BE
(IC4809), 0.7V_BE (IC4810)
LDO :
1.8V_EMMC (IC2201)
IC413
TCON_24_ON
TCON_12_ON
Q400
Tr SW
SOC (IC5000)
Main Board
SYSSET
2023/11/2806:39:49(GMT+09:00)
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