Diagnosis; Power On Sequence - Pioneer BDP-320 Service Manual

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5. DIAGNOSIS

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5.1 POWER ON SEQUENCE

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Pressing of the POWER key is detected by the IC4001 Submicrocomputer on the MAIN Assy.
The IC4001 then outputs a POWER_ON signal to the POWER SUPPLY UNIT.
After receiving the POWER_ON signal, the POWER SUPPLY UNIT activates, secondary
Power[SW+12 V], setting it to ON.
The R8A34019BG (IC1001), the core LSI, starts up. {RS-232C connector CN1601,
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log it to ON}
Communication between the R8A34019BG and the DDR2 SDRAM starts.
Communication between the R8A34019BG and the FLASH_IC starts.
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It takes about 1 minute to complete the startup process.
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