Pioneer PDP-5000EX, Service Manual

Page: 105 / 204

PDP-5000EX
105
5 6 7 8
5 6
7
8
C
D
F
A
B
E
The Definition of Abnormal Cells
Abnormal bright cells: Within five cells on screen.
(only one cell within a radius of 1 cm)
Abnormal dark cells: Under fifteen cells on screen.
(under two cells within a radius of 1 cm)
Count abnormal cells at a distance of 1 cm from panel.
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.
VOL SUS setting = 125/205 V
Vofs setting = 28 to 46 V
Vofs_max-Vofs setting: 10 V or more
Vofs setting-Vofs_min: 9 V or more
Vyprst setting = 220 to 271 V
Shipment standards for the unit:
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"
Set according to the table for Vofs
setting values.
Vsus = 205 [V]
Vofs = 15 to 60 [V]
Vyprst = 220 to 271 [V]
Vxnrst = 170 [V]
Vh = 130 [V]
Vadr = 60 [V]
(Variable voltage ranges when the
upper and lower limit of each voltage
are to be checked in this flowchart)
Ranges of the adjustable voltages
When calculating the voltage, round off the fractional part.
(For circuit protection, it is desirable to set the voltage to a lower value.)
In the following text, voltage is described in absolute values.
When the voltage is to be adjusted, do the following:
Enter Factory mode.
Display RST MASK 05 (black).
Operation switch
For margin measuring, read the voltage within the hysteresis
(stricter value), as shown below:
Erroneous discharge
Erroneous discharge
Upper limit of the voltage
Lower limit of the voltage
Read the voltage
within this range.
No erroneous
discharge
Down
Down
Up
Up
OVERVIEW
Definition of tones for the measuring signals
FAY
MKS S55
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.
Voltage setting
VSU125
VRP
∗∗∗
VOS
With RST MASK 05 (black) displayed, check if there are
stationary or horizontally moving luminescent spots.
CA check with black
MKS S55
Aging process for 3 minutes with RST MASK 01 (white)
Vofs setting
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.
Aging
MKS S51
Do the following after the voltage adjustment is completed:
Exit Factory mode.
Operation switch
MKS S00
FAN
Check that the picture is properly displayed.
Use DVD, LD, and broadcast signals for checking.
CA check
VOF
∗∗∗
MKS S59
MKS S62
MKS S63
MKS S64
MKS S66
MKS S67
Vofs actual adjustment (
2
to
4
)
Vsus = 205 [V]
Vofs = 28 to 46 [V]
Vyprst = 220 to 271 [V]
Vxnrst = 170 [V]
Vh = 130 [V]
Vadr = 60 [V]
(Ranges of the voltage settings
for the unit)
Ranges of the voltage
settings
(Digital Raster signal, Video-60 Hz sequence, ABL_ON)
Blue
850
R
0
1023
G
0
1023
B
850
1023
Green
850
R
0
1023
G
850
1023
B
0
1023
Red
582
R
582
1023
G
0
1023
B
0
1023
Violet
R
1023
1023
G
464
1023
B
1023
1023
Light
blue
R
464
1023
G
1023
1023
B
1023
1023
Light
purple
R
277
1023
G
130
1023
B
277
1023
Black
R
0
1023
G
0
1023
B
0
1023
White
R
1023
1023
G
1023
1023
B
1023
1023