DEBUG MODE-9
HDMI TROUBLESHOOT(3/3)
TX-SR806/SA806
HDMI no picture
or dropout
trouble
Check video
version
Old version
Version is not
displayed
Analog video
(V or S or Comp)
is output at
HDMI OUT ?
Up-conversion
from analog
video to HDMI
is NG
Display HDMI
DEBUG MODE
Only HDMI IN1
no output
HDMI IN2,
IN3, IN4
all no output
HDMI IN1,
IN2, IN3, IN4
all no output
One of IN2,
IN3, IN4
no output
Q8401 SII9134
is NG
Path from
Q8401 to HDMI
OUT terminal
is NG
HDMI IN1 to
IN4 are
normally output
Check
Information
on FL
Update to the
latest version
Q1016 MPU
is NG
Q8200
FLI30336
is NG
Interface of
Q8200 and
Q1016 is NG
Related pin of
Q8501 SII9135
is NG
HDMI IN1
terminal is
NG
Path from
HDMI IN1
terminal to
Q8501 is NG
Q8162
SII9185
is NG
Related pin
of Q8162 is
NG
Path from
the terminal
to Q8162 is
NG
Q8501 SII9135
is NG
Check power
supply pin of
Q8401
HDMI OUT
terminal is NG
Q8200
FLI30336 is
NG
Path from
Q8200 to
Q8401 is NG
Refer
DEBUG
MODE-5,6
According to
each remedy,
solve the
problems
Check the
power supply
pin of Q1016
Impossible to
replace
Q8200
Check power
supply pin of
Q8200
Impossible to
replace Q8501
Replace
HDMI IN1
terminal
Resolder the
pins of the parts
from HDMI IN1
terminal to
Q8501
Confirm waveform
is viewable by
oscilloscope
from HDMI IN1
terminal to Q8501
Confirm waveform
is viewable by
oscilloscope
from the terminal
to Q8162
Confirm waveform
is viewable by
oscilloscope
from Q8401 to
the terminal
Check the
power supply
pin of Q8162
One of IN2,
IN3, IN4
terminal is NG
Resolder the
pins of the
parts from
the terminal
to Q8162
Resolder the
pins of the
parts from
Q8401 to
the terminal
Check power
supply pin of
Q8501
Replace Q8401
Replace the
terminal
Replace
Q1016 MPU
Check RESET
pin #14
of Q1016.
It moves H -->
L --> H after
powerd ON.
Check P-OFF
pins
#18 and #76
of Q1016.
They must be
“high”
Check +3.3V
power supply
circuit
Change HDMI
Board
NAHDM-9702
Replace
HDMI Board
NAHDM-9702
Check power
supply circuit
for Q8200
Check
the power
supply circuit
for Q8501
Check the
power supply
circuit for
Q8401
Replace
Q8162
OK
OK
NG
OK NG
Find out
bad part and
replace it
Find out
bad part and
replace it
Replace the
terminal
Impossible to
replace Q8501
Replace
HDMI Board
NAHDM-9702
Confirm waveform
is viewable by
oscilloscope
from Q8200 to
Q8401
Resolder the
pins of the
parts from
Q8200 to
Q8401
Find out
bad part and
replace it
NOTE:
1. This trouble shooting map focuses on the HDMI hardware troubles.
For detailes, refer to TX-SR806 Block Diagrams and Schematic Diagrams.
2. Analysis written below is of typical cases. So, more detailed check may
need in actual cases.
3. Before replace ICs or pcb below, resolder the pins first to save resources.
No
Ye s
Latest version
Impossible to
replace
Q8200
Check power
supply pin of
Q8200
Change HDMI
Board
NAHDM-9702
Check the
power supply
circuit for
Q8200
OK NG
Resolder
the pins of
the parts
from HDMI IN1
to Q8501
Confirm waveform
is viewable by
oscilloscope
from HDMI IN1
to Q8501
Find out
bad part and
replace it
HDMI HARDWARE TROUBLE
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1
6
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1
3
9
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2
2
9
6
5
1
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2
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5
1
5
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Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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