Pioneer PDP-5016HD Service Manual page 172

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1.This Service panel Assy is required to perform this Vofs adjustment. If this adjustment is not
enough, some problems such as abnormal lit / dark cells will occur in the near future. Therefore be
A
sure to perform this adjustment with this procedure.
1.Go to the Module Adj. mode (Refer to"8. MODULE ADJUSTMENT MODE") by remote control key
(INPUT->0->9->1->7), refer to "8service factory menu" on SM.
2.Select the Panel Control in the Factory Menu
3.Select the Module Adj Off -> On in the Panel Control
4.Send [ FAY ] from PC , then send the following 232C command;
NOTE: It is necessary to use a PC and 232C cross cable for PDP module adjustment.
-VOL SUS: Send [ VSU137 ](Set Vsus data to 137(205V))
B
-VOL RST P: Change Vyprst voltage on panel label to data value -> Send [VRP***] command (set that data)
e.g.Vyprst on panel: 269V -> 059 data. See Convert Chart.)
-VOL OFFSET: Change Vofs voltage on panel label to data value -> set that data as pre- setting value with
[ VOF*** ] command
Display Full white MASK for 30 minutes
It is necessary to warm up panel temperature to prevent incorrect adjustment caused by a
margin of panel temp error.
Vofs adjustment START
(Red760)
C
Send [ MKSS59 ] : Display Red MASK
Send [ VOF246 ] : Set Vofs data to 246 [60V]
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Are there any dark cells
Yes
Decrease Vofs data one volt by one volt
until dark cells disappear.
D
But, lower limit Vofs is 005 [ 15V] )
Vofs_max1 118 [36V]?
Yes
Send [ VOF*** ] : Set back Vofs pre-setting value
Send [ MKSS51] : Display White MASK for 3 sec.
(Red1023)
E
Send [ MKSS69 ] : Change MASK to Red1023+
Send [ VOF246 ] : Set Vofs data to 246 [60V]
Are there any dark cells
www
Yes
Decrease Vofs data one volt by one
volt until dark cells disappear.
But, lower limit Vofs is 005 [ 15V]
F
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Before start the Adjustment
Preparation for Settings
[PAVS00] [VFQS03] [WBIS01] [PGMS00] [MKSS51]
Adjustment of Vsus, Vyprst and Vofs
Preparation for adjustment
Abnormal bright Cells: Five cells on screen
[ 232Ccommands ] ( Only one cell within a radius of 1cm )
Abnormal dark Cells: Under fifteen cells on screen.
( Under two cells within a radius of 1cm )
Count abnormal cells at a distance of 1m from panel.
If abnormal cells won't occur longer than one second,
do not count the abnormal cells.
Do not countstill bright cellsanddarkcells
No
Set Vofs data as the following order:
[ VOF246
(Refer to Vofs convert chart)
Vofs_max1
[ VOF*** ]
Write down Vofs_max1 to above space
No Check circuits ( Vofs voltage ) or
replace this service panel
- Note -
There are several different colors in RGB MASKs.
( e.g. Red MASK has Red760, Red1023, and Red1023+)
It is necessary to use an appropriate MASK color for Vofs adjustment
to find out abnormal dark cells easily.
Therefore be sure to use correct MASK shown at this procedure.
No
Set Vofs data as the following order:
[ ] --> [
VOF246
x ao
(Refer to Vofs convert chart)
y
Vofs_max2
. i
Vofs data in which all dark cells
disappear becomes Vofs_max2
PDP-5016HD
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Definition of Abnormal Cells
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Vofs_max1 = 246 [60V]
] --> [ VOF240 ]-->[ ]...
VOF235
[data]
This Vofs becomes Vofs_max2
VOF240 ]-->[ VOF235 ] ...
u163
[data]
3
4
2 9 9 4
1 3 1 5 0 5 8 2 9
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4
2 8
9 9
9 4 2 8 9 9