Diagnosis; Power On Sequence - Pioneer HD-V9000 Service Manual

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5. DIAGNOSIS

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5.1 POWER ON SEQUENCE

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When the startup factor is "Initial
Information Acquire," the sub
CPU immediately sends user
setting information and
immediately enters Standby
status.
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AC_OFF
AC ON
Initializing ports,
registers and devices
Checking the startup factor
Enters Standby status if the startup
factor is other than "Power On Start"
or "Initial Information Acquire."
Standby status
Power ON
Starting up the main CPU
Initializing LCD, starting up
Initializing ports,
registers, and devices
Simplified check of
ports and main memory
Starting up OS
Building up file system
Loading IDE/USB
drivers
Setting OS
Starting up drivers
Starting up
applications
Reading setting
information
Setting information
available
Sending Startup
completion notice
to sub-CPU
Timer Start time?
No
Content specified for
Power On Start?
x ao
y
No
. i
Playback stops
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AC_ON
Immediately enters Power On status if the
startup factor is "Power On Start" or "Initial
Information Acquire."
When the startup factor is "Initial Information
Power ON
Acquire," the LCD shows "Initialize."
"Initial Information Acquire" denotes a series of
internal processes of activation to deactivation
in order for the MAIN_CPU to transmit to the
SUB_CPU the setup data required for activation
of the following items:
• Schedule: "Enable"
• WakeUpOnLAN: "On"
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No setting information
Initializing settings
If the main CPU cannot be started up and does not
notify the sub-CPU of startup completion within 3
minutes, sub-CPU regards it as an abnormal state
and reboots the main CPU.
Yes
Yes
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No
Content for playback
.
exists?
Yes
Playback begins
HD-V9000
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Process of the sub-CPU
Process of the main CPU
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