Pioneer PRO-607PU Service Manual page 161

1
OUTLINE
Mode switching
A
Switch modes to start the voltage adjustment, as follows:
Enter Factory mode.
Display RST MASK 01 (white).
Voltage setting
Set Vsus and Vyprst, and tentatively set Vofs:
VOL SUS : Set to 136 (207[V]).
VOL RST P : Set to the voltage indicated
on the panel label.
B
VOL OFFSET : Tentatively set to the voltage
indicated on the panel label.
Aging
Perform aging with the fully white screen for 10 minutes
To prevent an error caused by the temperature characteristics
and to let the unit show its full properties after letting it sit,
perform aging for 10 minutes to raise the panel temperature to
a certain extent. This ensures the accuracy of inspection and
adjustment.
C
Actual Vofs adjustment (2 to 6)
Measuring the lower limit of Vofs
Signals to be measured: Pale purple, Sky color, Yellow egg color
Measuring the upper limit of Vofs
Signals to be measured: red 1023+, green 1023+, and blue 1023+
Vofs setting
In a case where the margin of Vofs is between 19 and 22 [V]:
Vofs set voltage = Vofs_max - 8 [V]
In a case where the margin of Vofs is 23 [V] or more:
D
Vofs set voltage = Vofs_max - 12 [V]
CA check with black
With the black mask displayed, check if there are stationary
or horizontally moving lit cells.
Confirmation of settings
Check that each voltage value is correctly set.
E
Command transfer
After the voltage adjustment is finished, make the following
settings:
Mask: OFF, Factory: OUT
Confirmation of setting data
Check that the each voltage is properly set.
F
122
1
2
Ranges of the adjustable voltages
(Ranges of the adjustable voltage
when the upper and lower limits of
FAY
each voltage are to be checked in
MKS S51
this flowchart)
Vsus = 207 [136] [V]
Vofs = 15 [024] to 60 [255] [V]
Vyprst = 240 [000] to 302 [158] [V]
Vxnrst = 180 [V]
Vh = 130 [V]
Vadr = 60 [V]
VSU136
VRP∗∗∗
VOF∗∗∗
When calculating the voltage, round off the fractional part.
(For circuit protection, it is desirable to set the voltage to a lower value.)
For margin measuring, be sure to read the value within the hysteresis
(stricter value).
V
Read the voltage
within this range.
The Definition of Abnormal Cells
Abnormal bright cells: Within five cells on screen.
Abnormal dark cells: Under fifteen cells on screen.
Count abnormal cells at a distance of 1 m 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.
Standard settings of the unit at shipment:
Vsus setting = 207 [V]
Vsus margin = 17 [V] or more
Vofs setting = 24 to 49 [V]
Vofs margin = 19 [V] or more
Vyprst setting = 250 to 300 [V]
Note: The voltages in the flowcharts are given in absolute values
(without ±).
CA check
Check that the picture is properly displayed.
Use DVD, LD, and broadcast signals for checking.
PDP-6071PU
2
3
Ranges of the voltage
settings
(Ranges of voltage settings
for this unit)
Vsus = 207 [136] [V]
Vofs = 24 [071] to 49 [199] [V]
Vyprst = 250 [026] to 310 [179]
[V]
Vxnrst = 180 [V]
Vh = 130 [V]
Vadr = 60 [V]
With erroneous discharge
Down
Upper limit of the voltage
Up
Without erroneous
discharge
Down Lower limit of the voltage
Up
With erroneous discharge
(fewer than 2 cells within a radius of 1 cm)
(fewer than 2 cells within a radius of 1 cm)
3
4
4