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Wolfgang Sundhaus
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5. DIAGNOSIS
A
5.1 POWER ON SEQUENCE
Power On Sequence
Pressing of the POWER key is detected by the IC3601 Submicrocomputer on the MAIN Assy. The IC3601 then outputs a POWER_ON signal to the SYPS Assy.
After receiving the POWER_ON signal, the SYPS Assy activates, secondary Power, setting it to ON.
B
The SMP8634 (IC1001), the core LSI, starts up.
Communication between the SMP8634 and the DDR SDRAM starts.
C
Communication between the SMP8634 and the FLASH_IC starts.
It takes about 1 minute to complete the startup process.
D
Troubleshooting
Are the pins at CN6051 and CN6002 supplied with voltages?
E
Is the reset signal H? (R1088)
Is the 27-MHz CLK oscillating? (X1001)
F
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BDP-LX70
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