Sequence After Power On - Pioneer DV-470-S Service Manual

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7.1.9 SEQUENCE AFTER POWER ON

Flow chart from power on to the picture output
A
Power on operation by a user
(remote controller key or product key)
FL controller receives a message
B
FL lighting / outputs a power on signal
(POWER ON: "L"→"H")
Release the reset for DVD IC
(XRESET: "L"→"H")
Accesses flash ROM
C
Request communication to DVD IC
Outputs the communicable signal to
FL controller (FP_ACK)
D
DVD IC – FL controller
communication
Accesses 64M SDRAM (part)
The opening picture appears
E
(Pioneer Logo)
F
62
1
2
STANDBY
[FL controller]
[FL controller]
[DVD IC]
[FL controller]
(FP_XRDY)
[DVD IC]
[DVD IC]
2
3
(Display of VFD : LOADING)
Disc detection (Focus control)
Read DISC information code
DV-470-S
3
4
[DVD IC]
Accesses 64M SDRAM
(Remaining part)
Spindle turn
Disc Identification
The picture appears
4