XV-DV363
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5.5 PASS/FAIL TEST PROCEDURE OF HDMI TRANSMITTER IC
In a case where the HDMI video signal is not output
1
In a case where the HDMI audio signal is not output
2
Is the analog video signal output?
Yes
No
OK
NG
Malfunctions are caused around IC201 BE IC or in IC201.
Is the signal as described above sent to the input of IC931?
No
Malfunctions are caused in the output line between IC931 and
CN931. Check the HDMI connector, as well.
Check if the HOME MENU or VCD playback picture is displayed
when this unit is connected to a PC monitor equipped with a
DVI input.
Purpose:
To check if the HDMI output line, including the terminal,
is in failure. (An HDMI <-> DVI conversion cable is
required for checking.)
Pass/fail test of BE IC (IC201: DVD MAIN Assy)
Conduct proving of R264, R265, R267 and
R271 (33 ohms x 44 set), and R266 (27 MHz clock) with an
oscilloscope to check whether each signal varies in amplitude
between H (3.3 V) and L at reproducing VCD, and whether
27 MHz clock is correctly output.
Malfunctions are caused in HDMI IC (IC931 : DVD MAIN Assy)
or in the output line between IC931 and CN931. In this regard,
the frequency is around 1 GHz at the CLK and DATA line
between IC931 and CN931, which makes it difficult to observe
the waveform by a general oscilloscope. Check the connection
with the HDMI connector and the HDMI cable, as well.
NG
Change mode.
The initial setting provides no sound.
Has HDMI sound been changed in STAND-BY MENU?
No
Check if the initialization process for HDCP, etc. is OK by
connecting this unit with a Pioneer Plasma Display equipped
with an HDMI input.
Yes
OK
Yes
Malfunctions in IC931.
No
Malfunctions around IC931.
No
Malfunctions in IC201.
Malfunctions are caused around IC201 BE IC.
No
The HDMI transmitter IC (HDCP process block) may be in failure.
Change IC201 or IC931.
The customer's monitor may not be compatible
with this unit. Confirm the name of manufacturer
and model of the monitor, and get a specific
description of the failure. Then look for an identical
case in a collection of past cases, or consult the
design section. In some cases, upgrading the
software or firmware for both the DVD player and
the monitor will solve the problem.
www. xiaoyu163. com
QQ 376315150
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
