Power On Sequence - Pioneer CB-A802 Service Manual

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7.1.9 POWER ON SEQUENCE

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Sequences after power is on
Power ON
Flash check
Initialization of the port,
register, and devices
Servo DSP
Read out the setting data
from the flash memory.
Read out the setting data from the
EEPROM on the AJKB Assy.
• Destination
• CPRM ID/KEY
• Serial number
TE
L 13942296513
• Accumulated power-on time and
playback time, etc.
destination setting
initialization of
each device properly
the communication
with the sub-microcomputer
Acquiring data from
www
the real-time clock
.
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http://www.xiaoyu163.com
No
OK?
Yes
No
OK?
Yes
No
OK?
Initialization of the settings
Yes
No
EEPROM
Read?
An error indication is
Yes
displayed on the LCD.
Is the
No
correct?
An error indication is displayed
on the screen and the LCD.
Yes
Is
No
done?
An error indication is
displayed on the LCD.
Yes
Is
No
: If the communication with the sub-microcomputer is not established,
established?
Yes
x ao
y
A
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8
An error indication is displayed on the LCD.
If the indication is "FLASH SUM" or "FLASH ID,"
connect the dedicated cable for downloading to the
15-pin D-SUB connector and download the firmware.
"SDSP RWER" is displayed on the LCD.
Do not proceed to the next step.
Replace the DVDM Assy.
Q Q
3 6 7 1 3
: "EEPROM READ NG"
: LCD "NO AREA"
: OSD "No Area Information"
Setting of the destination is required.
: See "7.1.3 Self-diagnosis Function."
a reset signal is issued from the sub-microcomputer every 5 seconds.
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.
DVD-V8000
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co
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8
9 9
A
B
C
2 8 9 9
D
E
F
101
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