Read Sony STR-DA6400ES (serv.man4) Service Manual online
7
When all circuit voltages are supplied, SYSTEM CONTROL (IC2513)
sends some reset signals to ICs and start communication with some key
ICs. When all the communication between key ICs is established,
SYSTEM CONTROL starts normal operation.
ICs. When all the communication between key ICs is established,
SYSTEM CONTROL starts normal operation.
Key IC:
MAIN SYSTEM CONTROL (IC2513)
: MAIN Ucom
VIDEO SYSTEM CONTROLLER (IC3610) : VIDEO Ucom
DSP CONTROLLER (IC5208)
: DSP Ucom
UPDATE SIGNAL PROCESSOR (IC105) : IR learning Ucom
CONNECTED MEDIA PROCESSOR (IC8013) : Network IC
(Troubleshooting) Firmware version checking in SPECIAL MENU
MODE – Page 25
MODE – Page 25
If the set doesn’t operate well, please check each firmware version in
“SPECIAL MENU MODE”. If any firmware version is “Ver. 0.00”, it
means the communication between the applicable circuit and SYSTEM
CONTROLLER (IC2513) is not established well. In this case, please
check the related circuit to show the firmware version correctly.
means the communication between the applicable circuit and SYSTEM
CONTROLLER (IC2513) is not established well. In this case, please
check the related circuit to show the firmware version correctly.
Main checking points are clock, voltage and serial data line between
Key IC and related circuit.
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