Diagnosis; Power On Sequence - Pioneer BDP-95FD Service Manual

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5. DIAGNOSIS

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5.1 POWER ON SEQUENCE

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A
Power On Sequence
1 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.
2 After receiving the POWER_ON signal, the SYPS Assy activates, secondary
Power, setting it to ON.
B
3 The SMP8634 (IC1001), the core LSI, starts up.
4 Communication between the SMP8634 and the DDR SDRAM starts.
C
5 Communication between the SMP8634 and the FLASH_IC starts.
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L 13942296513
It takes about 1 minute to complete the startup process.
D
Troubleshooting
1 Are the pins at CN6051 and CN6002 supplied with voltages?
E
2 Is the reset signal H? (R1088)
3 Is the 27 MHz CLK oscillating? (X1001)
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