Pioneer deh-p7200hd Service Manual page 31

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To all turning off
If a noise is observed on the screen:
The display microcomputer may have an error, or the connection between the display microcomputer and the
OEL driver may have a problem.
Screen ROM connection confirmation
: OK or NG
If nothing is displayed on the screen:
There may be a problem with the communication, or the display microcomputer may have an error.
If NG is displayed somewhere:
The connection between the display microcomputer and the image ROM may be defective. For example, even
if NG is displayed for the data bus, it is not necessarily a data bus connection defective.
A problem with the address bus may also cause an error during data bus check.
TE
L 13942296513
Media microcomputer information display
UNIT
If nothing is displayed on the screen:
There may be a problem with the communication, or the display microcomputer may have an error.
If a number apparently strange is displayed as the media version:
There may be a problem with the communication.
www
.
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http://www.xiaoyu163.com
: WW number
Note:Because data is not sent from the media microcomputer,
this place becomes a blank display.
? ? ? ? : Unit number information of media microcomputer
x ao
y
i
http://www.xiaoyu163.com
6
8
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3 6 7 1 3
u163
.
DEH-P7200HD/XNUC
6
7
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
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co
7
8
9 9
A
B
C
2 8 9 9
D
E
F
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