Pioneer PDP-6071PU Service Manual page 125

5
3 Actual Vofs adjustment (2)
(From 2 )
Perform aging with RST MASK 01
(white) displayed for 3 seconds:
Set to RST MASK 14 (yellow egg color).
Set VOL OFFSET to 024 (15 [V] ).
Are there any dark cells?
Gradually increase Vofs data
until dark cells disappear (Vofs should
be 255 (60 [V]) or less).
Is Vofs_min3 144 (38 [V])
or smaller?
Return the Vofs value to the tentative
voltage setting.
Set the highest voltage among Vofs_min1, Vofs_
min2 and Vofs_min3 as Vofs_min.
(To 4 )
5
6
(Check Vofs_min3 with the yellow egg color signal.)
MKS S51
MKS S64
VOF 024
No
Note:
Yes
This setting value becomes the value
VOF ∗∗∗
for Vofs_min3.
No
Yes
Note:
VOF ∗∗∗
This is for checking the lower limit of Vofs accurately.
PDP-6071PU
6
7
Set Vofs_min3 to 024 (15 [V]).
Replace the panel
again or abnormality
in circuits
Note: Take note of the lower limit color of Vofs
(pale purple or sky color or yellow egg
color).
7
8
Vofs_min3
[STEP]
Note: Take note of the value
for Vofs_min3.
Vofs_min
[STEP]
125
8
A
B
C
D
E
F