Pioneer PDP-6070PU, Service Manual

Page: 126 / 224

PDP-6071PU
126
1 2 3 4
1 2 3 4
C
D
F
A
B
E
4
Actual Vofs adjustment (3)
Perform aging with RST MASK 01
(white) displayed for 3 seconds:
MKS S51
Set to RST MASK 19 (red 1023+).
Set VOL OFFSET to 255 (60 [V] ).
Are there any dark cells?
Are there any dark cells?
Gradually decrease Vofs data
until dark cells disappear (Vofs should
be 024 (15 [V]) or more).
Is Vofs_max1 113 (32 [V])
or greater?
Return the Vofs value to the tentative
voltage setting.
Perform aging with RST MASK 01
(white) displayed for 3 seconds:
Set to RST MASK 20 (gr).
Set VOL OFFSET to 255 (60 [V] ).
Gradually decrease the Vofs data
until dark cells disappear (Vofs should
be 024 (15 [V]) or more).
Return the Vofs value to the tentative
voltage setting.
Note:
This is for checking the lower limit of Vofs accurately.
Note:
This is for checking the lower limit of Vofs accurately.
Set Vofs_max2 to 255 (60 [V]).
Set Vofs_max1 to 255 (60 [V]).
Note:
This setting value becomes the value
for Vofs_max1.
Note: Take note of the value
for Vofs_max1.
Note:
This setting value becomes the value
for Vofs_max2.
[STEP]
Vofs_max1
Replace the panel
again or abnormality
in circuits
Yes
Yes
Yes
Yes
(Check Vofs_max1 with the red 1023+ signal.)
(Check Vofs_max2 with the green 1023+ signal.)
No
Is Vofs_max2 113 (32 [V])
or greater?
No
No
No
(From
3
)
(To
5
)
MKS S51
MKS S70
MKS S69
VOF 255
VOF 255
VOF
∗∗∗
VOF
∗∗∗
VOF
∗∗∗
Note: Take note of the value
for Vofs_max2.
[STEP]
Vofs_max2
Replace the panel
again or abnormality
in circuits