38
SC-09TX
1
2
3
4
A
B
C
D
E
F
1
2
3
4
OK
OK
Yes
If an overload is detected,
are the cables connected
with the SP terminals short-
circuited?
NG
OK
OK
NG
No
NG
OK
B
Determination of whether the display system or
other system is in failure
• Is the normal screen displayed?
Confirmation of symptoms
• Is there a log that indicates detection of an
abnormality?
Determination of whether the power supply system
or the microcomputer system is in failure
1
Does the MCACC indicator light?
2
Does the 10-ch indicator or LCD backlight light?
Confirmation of connections
• In normal display mode, is the indication for
the external input displayed on the LCD when
the LCD or VIEW key is pressed?
Confirmation of connections
• Are the versions for all the microcomputers, etc. displayed?
Failure in 8-V power
supply or poor
connection
Failure in the
DISPLAY
microcomputer
Abnormality in the HDMI microcomputer
or poor connection
Failure in the Assy that cannot be controlled or poor
connection between the uncontrollable Assy and
other Assy
Failure in communications (connections) between a
microcomputer whose version is not displayed and the
system (main) microcomputer (For details on the Assys
on which microcomputers are mounted, see the block
diagram.)
* If the version of the AUDIO (DSP) microcomputer is not
displayed, check also the connection between the DSP
Assy and the MAIN DIGITAL Assy.
Failure in the
location where
the overload was
detected
Only
2
unavailable
Neither
1
nor
2
available
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