Inspections On Major Ics - Haier TV-8888-34 Service Manual

9.Inspections on major ICs

9.1R8820LV(DIGITAL:U9102)-MICOM
(1)Check whether the proper power is supplied(3.3v)
(2)Check whether the No.71 Reset pin's output is high.
(3)Check I2C-BUS (I2C :PINS 76 and 77)
(4)Check whether the inputs/outputs betwenR8820LV and MEMORY(U9101,U9103) are normal.
(5)Check whethet the 25MHZ clock is connected to pins 13 and 14.
9.2VPC3230(digital:U9513)_Check when the input mode is set for TV,VIDEO,S-VIDEO,DVD
(1) Check whether the proper power is supplied.(5v,3.3v)
(2) Check whether the No.15 Reset pin's output is high.
(3) Check the I2C-bus(pin 13 and 14).
(4) Check whethet the output clock of llc1(pin 28) is 13.5M HZ.
(5) Check the output on VPC_h sync(pin56),VPC_VYNC(PIN57),VPC_FIELD(PIN53).
(6) Check whethet the 20.25Mhz clock is connected to pins 62 and 63.
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