Pioneer PDP-4280HD, Service Manual

Page: 125 / 176

PDP-4280HD
125
5 6 7 8
5 6
7
8
C
D
F
A
B
E
8.4 ADJUSTMENT WHEN THE SERVICE PANEL ASSY IS REPLACED
A . P N E L
L / 1
[
B T 6 0 V S ]
F A C T
O > V L O F T F S E < =
A J P N E L – 1 A D
2 : 1 8
I – N 1 3 2 0 6 0 – R G B H J – B
1
5
10
15
16
1 5 10 15 20 25 30 32
1
2
3
4
5
6
7
8
9
A
B
C
D
E
AREA
After the panel is replaced with one for service, voltage margin adjustment is required.
Basically, voltage margin adjustment is performed using the Panel Factory menu.
After the panel is replaced and the unit is turned on, clear the pulse meter first.
For details on how to clear the pulse meter, see "8.3 HOW TO CLEAR HISTORY DATA".
∗
1: As various corrections are made referring to the pulse-meter count to calculate how long the panel has been used, if
adjustment of the panel for service is performed without clearing the pulse-meter count, proper adjustments will not be
performed.
∗
2: The drive sequence for 60-Hz video is used for adjustment. When adjustment is made using the Panel Factory menu, the
current drive sequence is displayed on the screen, as shown in the figure below. Make sure that 60VS is always indicated
during adjustment.
Example of the On-Screen display during Panel Factory mode
Drive sequence indication
[Preparation]
In the "PANEL-1ADJ" layer, the Panel White Balance value is reset to default, Panel Gamma is set to Straight, and Noise is
set to OFF.
In this case, "- - - - /
∗∗∗∗
" (
∗∗∗∗
represents the current drive sequence) is displayed on the third line of the On-Screen display
during Panel Factory mode.
If adjustment is performed using RS-232C commands, the following commands must be transmitted for preparation:
[PAV S00]: To set panel drive mode to Factory
[VFQ S03]: To set Drive Sequence to Video 60 Hz
[WBI S01]: To temporarily reset the Panel WB adjustment value to default (WBI S00 cancels this setting.)
[PGR S00]: To set the gamma R value to that for Factory mode
[PGG S00]: To set the gamma G value to that for Factory mode
[PGB S00]: To set the gamma B value to that for Factory mode
[DIZ S03]:Dither ON,L dither ON, noise OFF
∗
: If the unit is shut down during the above adjustment flow, resend the above commands from the beginning.
[Supplement]