Read Sony STR-DA6400ES (serv.man4) Service Manual online
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This manual explains circuit operation of STR-DA6400ES
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When AC cord is connected to outlet and POWER switch SW1) is
pushed, AC voltage input to SUB POWER TRANSMITTER (T002)
through Jack (J01). Then, STB +5V and STB +3.3V are supplied for the
operation of SYSTEM CONTROLLER (IC2513).
through Jack (J01). Then, STB +5V and STB +3.3V are supplied for the
operation of SYSTEM CONTROLLER (IC2513).
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When STB +3V is input to RESET SIGNAL GENERATOR (IC2510),
reset signal is generated and input to SYSTEM CONTROLLER (IC2513
131pin) through RESET SWITCH (IC2512).
131pin) through RESET SWITCH (IC2512).
SYSTEM CONTROLLER boots up by reset signal and start to read the
operation firmware in SYSTEM CONTROLLER itself.