Pioneer PDP-LX508A, Service Manual

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4.4 NON-FAILURE INFORMATION
4.4.1 INFORMATION ON SYMPTOMS THAT DO NOT CONSTITUTE FAILURE
Information on symptoms that do not constitute failure
SUPPLEMENT: On the video settin g for HDMI
There are three types of HDMI o u tp u t formats: color difference 4:4:4, color difference 4:2:2, and RGB4:4:4.
(The proportions, s u ch as 4:4:4 and 4:2:2, represent those of the amo u nt of data for v ideo signal components. For example, as for color difference 4:4:4, the
proportion of the amo u nt of data as for Y, C b , and Cr is 4:4:4.)
It is req u ired to make the settings of the PDP according to the settings of the o u tp u t eq u ipment. For u s u al operation, ho w e v er, set them to AUTO. If the color is
inappropriate, make the settings man u ally.
In the HDMI system, v ideo signals are coded at 24 b its per pixel and transmitted as a series of 24- b it pixels. In a case of color difference 4:4:4, Y, C b , and Cr u se 8
b its each. In a case of color difference 4:2:2, Y, C b , and Cr u se 12 b its each, bu t C b and Cr are transmitted at a half sampling rate of Y. This u nit is capa b le of
processing the u pper 10 b its o u t of 12 b its of v ideo data. Recent high-end D V D players, s u ch as Pioneer D V -79A V i, are capa b le of o u tp u tting 10- b it color-difference
signals. In general, it is said that pict u re q u ality for color difference 4:2:2 format is ass u med to b e higher, b eca u se h u man eyes are more sensiti v e to l u minance
than to colors. In the case of RGB4:4:4, R, G, and B u se 8 b its each.
Symptom Cause, item to check, information
HDMI: Symptoms concernin g the input format and settin g s
The pict u re color for an I N PUT 3 or 4 or 5 signal is not
correct.
The color setting for I N PUT 3 or 4 or 5 is not compati b le w ith that of the o u tp u t eq u ipment.
Check w hether the color setting is YP b Pr or RGB.
The v ideo signal to I N PUT 3 or 4 or 5 is not displayed, and a
message is displayed.
A u ns u pported v ideo signal is inp u t.
The a u dio signal inp u t to the I N PUT 3 is not o u tp u t.
N o HDMI signal is inp u t.
The a u dio setting for I N PUT 3 is any setting and a v ideo signal is not inp u t. If the a u dio setting is
any setting to o u tp u t an analog a u dio signal, the HDMI signal m u st b e inp u t. (If a D V I de v ice is to
b e connected, u se a D V I-HDMI con v ersion ca b le.) If the HDMI v ideo signal is not inp u t, the
analog a u dio signal is not o u tp u t.
N o so u nd of signals to I N PUT 3 or 4 or 5 is o u tp u t.
The setting on the side of the HDMI o u tp u t eq u ipment is w rong. (Example: Dol b y Digital)
MONITOR video output
The v ideo o u tp u t signal from the MO N ITOR o u tp u t is
deteriorated. Or w hen the v ideo o u tp u t signal from the MO N ITOR
o u tp u t is recorded, its play b ack pict u re is deteriorated.
The v ideo signal o u tp u t from the MO N ITOR o u tp u t is Macro v ision protected.
The v ideo signal is not o u tp u t w hen the component signal is
inp u t to I N PUT 1 or 2.
The v ideo signal is not o u tp u t from the MO N ITOR o u tp u t w hen the component signal is selected.
The v ideo signal is not o u tp u t w hen the v ideo signal is inp u t
to I N PUT 3 or 4 or 5.
The v ideo signal is not o u tp u t from the MO N ITOR o u tp u t w hen the HDMI signal is selected.
MONITOR audio output
The image displayed on the PDP is not synchronized w ith the
so u nd from the MO N ITOR a u dio o u tp u t.
The a u dio signal from the MO N ITOR o u tp u t is synchronized w ith the v ideo o u tp u t signal from the
MO N ITOR o u tp u t.
DIGITAL OUT (PDP-50 8 XDA only)
Play b ack of the signal from the DIGITAL a u dio o u tp u t
connector is possi b le, bu t recording is not possi b le.
The v ideo signal o u tp u t from the DIGITAL connector is copy-protected.
The digital a u dio o u tp u t signal from the DIGITAL connector is
not synchronized w ith that from the MO N ITOR v ideo o u tp u t.
The digital a u dio o u tp u t signal from the DIGITAL connector is synchronized w ith the v ideo signal
that is c u rrently displayed, and not w ith the MO N ITOR v ideo o u tp u t.
Miscellaneous
The no-signal off f u nction is not acti v ated.
The no-signal off and no-operation off f u nctions are effecti v e only if v ideo (composite, S v ideo,
component, HDMI [excl u ding PC]) inp u t or T V inp u t is selected.
The no-operation off f u nction is not acti v ated.
Po w er management does not f u nction.
Po w er Management is effecti v e only w hile an analog PC signal is b eing inp u t. It is not effecti v e
w ith HDMI-PC signal inp u t.
The AUTO SETUP f u nction is not acti v ated.
The A u to Set u p f u nction is effecti v e only w hile an analog PC signal is b eing inp u t. This f u nction
does not w ork if an analog PC signal is not inp u t, e v en if the I N PUT PC is selected.
The a u dio signal from the PC is not o u tp u t. W rong connection of the ca b le to the SR connector is s u spected.
Control v ia the SR connector is not possi b le. W rong connection of the ca b le to the PC I N PUT (AUDIO) connector is s u spected.
The pict u re-q u ality setting (A V Selection) is not stored.
The pict u re-q u ality setting is stored for each inp u t. As the setting is changed w hen another inp u t
is selected, the u ser may ha v e a false idea that the setting is not stored.
The pict u re size changes ar b itrary. The A u to Size setting is set to O N .
The display position of the screen changes slightly w hile the
screen is on.
The or b iter f u nction for minimizing the effects of phosphor bu rn is acti v ated. Altho u gh the setting
for this f u nction can b e changed on the Home men u , retaining the factory setting is strongly
recommended.
The v ideo signal to the S v ideo connector is not displayed.
The component v ideo ca b le is connected to the same inp u t f u nction as for the S v ideo (e v en if no
signal is inp u t to the component v ideo connector, merely ha v ing something pl u gged in to the
connector w ill res u lt in j u dgment that a signal is b eing fed in and the component v ideo connector
takes priority).(Priority of connectors: component v ideo > S v ideo > composite v ideo)
The S V ideo or component v ideo ca b le is connected to the same inp u t f u nction as for the
composite v ideo.(Priority of connectors : component v ideo > S v ideo > composite v ideo)
The v ideo signal to the composite v ideo connector is not
displayed.
The 10 8 0p inp u t signal is not displayed properly or at all,
altho u gh the 10 8 0i inp u t signal is displayed properly.
Check that the connected ca b le s u pports HDMI Category 2. (As the clock freq u ency for the 10 8 0p
signal is triple that for the 10 8 0i signal, signal degradation ca u sed b y a ca b le m u st not b e
neglected. A ca b le s u pporting HDMI Category 2 can b e u sed for the 10 8 0p signal. Altho u gh some
con v entional ca b les can s u pport the 10 8 0p signal, some others cannot.)