Pioneer PDP-5000EX Service Manual page 105

5
OVERVIEW
Operation switch
When the voltage is to be adjusted, do the following:
Enter Factory mode.
Display RST MASK 05 (black).
Voltage setting
Set VOL SUS and VOL RST P, and set temporary VOL
OFFSET, as indicated below:
VOL SUS: 125
VOL RST P: Set voltage as shown at panel label.
VOL OFFSET: Set voltage as shown at panel label.
Aging
Aging process for 3 minutes with RST MASK 01 (white)
To prevent an error caused by the temperature
characteristics, raise the panel temperature to
a certain extent beforehand. But do not perform
aging more than 20 minutes.
Vofs actual adjustment (2 to 4)
Signals to be measured
VOL OFFSET lower limit:
VOL OFFSET_min1 "light purple"
VOL OFFSET_min2 "light blue"
VOL OFFSET_min3 "violet"
VOL OFFSET upper limit:
VOL OFFSET_max1 "red 582"
VOL OFFSET_max2 "green 850"
VOL OFFSET_max3 "blue 850"
Vofs setting
Set according to the table for Vofs
setting values.
CA check with black
With RST MASK 05 (black) displayed, check if there are
stationary or horizontally moving luminescent spots.
Operation switch
Do the following after the voltage adjustment is completed:
Exit Factory mode.
CA check
Check that the picture is properly displayed.
Use DVD, LD, and broadcast signals for checking.
5
6
Ranges of the adjustable voltages
(Variable voltage ranges when the
upper and lower limit of each voltage
FAY
are to be checked in this flowchart)
MKS S55
Vsus = 205 [V]
Vofs = 15 to 60 [V]
Vyprst = 220 to 271 [V]
Vxnrst = 170 [V]
Vh = 130 [V]
Vadr = 60 [V]
VSU125
When calculating the voltage, round off the fractional part.
VRP∗∗∗
(For circuit protection, it is desirable to set the voltage to a lower value.)
VOS
In the following text, voltage is described in absolute values.
For margin measuring, read the voltage within the hysteresis
(stricter value), as shown below:
MKS S51
Read the voltage
within this range.
MKS S59
MKS S62
MKS S63
The Definition of Abnormal Cells
MKS S64
Abnormal bright cells: Within five cells on screen.
MKS S66
MKS S67
Abnormal dark cells: Under fifteen cells on screen.
Count abnormal cells at a distance of 1 cm from panel.
VOF∗∗∗
If abnormal cells won't occur longer than one second, do not count the
abnormal cells.
Do not count still dark cells and bright cells.
Shipment standards for the unit:
VOL SUS setting = 125/205 V
Vofs setting = 28 to 46 V
Vofs_max-Vofs setting: 10 V or more
MKS S55
Vofs setting-Vofs_min: 9 V or more
Vyprst setting = 220 to 271 V
Definition of tones for the measuring signals
MKS S00
(Digital Raster signal, Video-60 Hz sequence, ABL_ON)
FAN
White
R
1023
1023
G
1023
1023
B
1023
1023
PDP-5000EX
6
7
Ranges of the voltage
settings
(Ranges of the voltage settings
for the unit)
Vsus = 205 [V]
Vofs = 28 to 46 [V]
Vyprst = 220 to 271 [V]
Vxnrst = 170 [V]
Vh = 130 [V]
Vadr = 60 [V]
Erroneous discharge
Down
Upper limit of the voltage
Up
No erroneous
discharge
Down Lower limit of the voltage
Up
Erroneous discharge
(only one cell within a radius of 1 cm)
(under two cells within a radius of 1 cm)
Black Light Light Violet
purple blue
R R R R
0 277 464 1023
1023 1023 1023 1023
G G G G
0 130 1023 464
1023 1023 1023 1023
B B B B
0 277 1023 1023
1023 1023 1023 1023
7
8
A
B
C
D
E
Red Green Blue
582 850 850
R R R
582 0 0
1023 1023 1023
G G G
0 850 0
1023 1023 1023
B B B
0 0 850
1023 1023 1023
F
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