Hisense MTK8222, Service Manual

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LCD TV Service Manual
Hisense Confidential
The main control signal, as list:
Control Signal
Internet mark
Instruction Remark
UP31 Low level power on
Standby signal
High level power on
UP31pass Q29 inverse
phase
SW High level power on
Power control
---- Low level power on
UP34 Low level BL on
BL-control BL-ON/OFF
Low level BL on
UP34 passQ2 inverse
phase
PWM0
BL-brightness
BL-ADJUST
Adjust duty ratio
PWM0passQ18 inverse
phase
E2prom written
protect
PWM2
Flash written protect
FRESET# High voltage for
protect
Key “0”
ADIN0
key
Key “1”
ADIN1
key
IR signal
IR-IN
Tuner 33V
PWM1
Adjust duty ratio
TU_33V
PWM1 rise voltage
Audio amplify mute
GPIO_21
Low-level mute