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DEBUG MODE-9
HDMI TROUBLESHOOT-3/3
HDMI HARDWARE TROUBLE
HDMI no picture
or dropout trouble
Check video
version
Version is not
Latest
Old version
displayed
version
Update to the
Q701 is NG
latest version
Check the
power supply
pin of Q701
Check +3.3V
Replace
power supply
Q701
circuit
Check RESET pin
Check P-OFF pins
#14 of Q701.
#18 and #98 of Q701.
It moves High -->
They must be "high"
Low --> High after
powered on.
NOTE:
1. This troubleshoot focuses on the HDMI hardware troubles.
2. For details, refer to TX-SR507/577/DTR-20.1 Block Diagrams
and Schematic Diagrams.
3. Analysis written below is of typical cases.
So, more detailed check may need in actual cases
because of multiple hardware and software causes.
4. Before replace IC or pcb below, resolder the pins in order
to save resources.
5. As for TX-SR577 and DTR-20.1, the procedure below is
the same as TX-SR507 except model name.
Only HDMI IN 1,
IN 2, IN 3 or IN 4
no output
Path from
Related pin of
The HDMI IN
HDMI IN
Q8501 is NG
terminal is NG
terminal to
Q8501 is NG
Replace
Resolder the
Impossible to
the HDMI IN
pins of the parts
replace Q8501
terminal
from HDMI IN
terminal to Q8501
Confirm waveform
Replace
is viewable by
HDMI Board
oscilloscope
BAHDM-0060
from HDMI IN
terminal to Q8501
Find out bad
part and
replace it
Main Device (IC)
Circuit No.
Function
Q701
Main microprocessor
Q8501
HDMI Receiver
Q8401
HDMI Transmitter
HDMI IN1 to
Up-conversion from
IN4 all
analog video to HDMI
no output
is NG
This model is not
Q8501 is NG
Up-conversion
featured
Check power
supply pin of
Q8501
OK
NG
Impossible to
Check the power
replace Q8501
supply circuit
for Q8501
Replace
HDMI Board
BAHDM-0060
TX-SR507/SR577/DTR-20.1
Description
MPD70F3746
SiI9233ACTU
SiI9134
Display HDMI
DEBUG MODE
Check Information
on FL display
Refer to DEBUG
MODE-5, 6
According to each
remedy, solve the
problems
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