Filter Board - Hitachi 32PD3000E Service Manual

No ITEM POTENTIAL PROBLEM/QUESTION
Reduction on 32PD3000. YNR and CNR. YNR ;
Luminance noise is reduced without affecting
Chrominane transient. CNR ; Chrominace noise
is reduced without loosing sharpness of picture
(Luminance)
5 WHITE WHITE BALANCE adjustment is done by menu
BALANCE bar. COOL/NORMAL/WARM selection is also
possible but in service menu. In Picture mode is
selected as shown below. DYNAMIC ; COOL
NATURAL ; COOL
CINEMA ; NORMAL
FAVOURITE ; COOL
6 When selecting CENTRE speaker or AV4
CLOCK NOISE
mode, you can hear clock noise in sound when
ON SOUND
volume level is increased
more than half. This is caused by cross-talk in
the cable. AV4 sound and centre sound are
located after audio decoder (MSP3410) which
leads audio input impedance
7 RGB MODE When you see streak noise on RGB input, this is
STREAK caused by clamping error accidentally.
NOISE
8 MENU When you select MENU, picture wide mode is
WIDEMODE changed to WIDESCREEN wherever wide mode
is.
9 PC WINDOW When selecting PC window, sub picture is
LIMITATION displayed. Sub picture is not possible to display
YPbPr and PC so those are prohibited to be
selected.
80
CAUSE and COUNTERMEASURE/ADVICE
White balance adjustment in menu bar ranges from 6500K to
11000K in DYNAMIC/NATURAL/FAVOURITE. In
CINEMA, colour temperature range is shifted to warm side.
Screened interface cable cures this problem.
In service mode, check SVC > OPT > RGB Comb = off
This is because OSD is inserted BEFORE a picture is scaled
to any of wide modes. If a picture is zoomed to LETTER
BOX or T16:9L, some of the menu is hidden if wide mode
remains as it is. This system gets TV+TEXT feature possible.
By AV key selection, AV4 and PC is skipped. AV/PC in
position, FRONT is displayed when selecting the position
where AV4 and PC is stored. In case of AV in position
ideally that psotion should be skipped. But it is not easy for
software to carry out so FRONT is selected as alternative to
blanking.
NOTE
It will be applied after
trail 100 Q'ty. For 100,
DMD send HEL
improved one.