3. Starting detecting the point of failure
Check item(1).
Check that the version of the AVR can be read
correctly.
Is the GUI version readable correctly?
After rewriting the GUI ROM, check the GUI ver-
sion.
If it does not work, replace the GUI Rom(
IC732
)
and recheck the GUI Ver.
If it does not work, replace the PCB.
3-1 Check the "HDMI/DVI" item in troubleshooting.
There is no problem with Rx, Tx, and GUI of HDMI as well as IC of SW.
Check that sound is heard from the input termi-
nal of the HDMI 1 - 3.
Check that sound is heard from the input termi-
nal of the HDMI 6.
Check that sound is heard from the input termi-
nal of the HDMI 4 / 5.
Use any of Dolby TrueHD/DTSHD MA/PCM 8ch
for the playback audio format.
Check item(2).
: Check operation of the HDMI input terminal.
When the HDMI input terminal of this device is connected to the player correctly, is sound heard from
the speaker?
※ When checking, turn the AV amplifier on and off after checking the connection terminal with the
player. (To set the same conditions during verification of operation)
Check item(4).
: Check operation of the HDMI output terminal.
When the player is connected to the HDMI input terminals
in order, are the images on the player displayed on the TV in
both cases?
HDMI OUT1
HDMI IN1
Check item(3).
: Check operation of the HDMI output terminal.
When the "SETUP" button on a remote control is pressed,
is "MENU" displayed on TV which is connected to the HDMI
output terminal on the AVR?
Is the "DIG" indicator illuminated on the FLD?
When the "DIG" indicator is illuminated, the digi-
tal audio block is faulty.
If the "DIG" indicator is not illuminated, go to
check item (5)
.
(HDMI Rx/Tx IC(MN864788)failure detection
procedure)
Go to
check item (18)
HDMI SW (MN864788A) failure detection proce-
dure
Go to
check item (29)
(Front HDMI Buffer IC(AD8195)failure detection
procedure)
Go to
check item (52)
(Between HDMI Tx(MN864788) &
OSD(ADV7623) failure detection
procedure)
Go to
check item (37)
(OSD (ADV7623) failure detection
procedure )
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
NO
NO
s
s
75
Caution in
servicing
Electrical
Mechanical
Repair Information
Updating
