Pioneer PDP-5016 Service Manual page 59

2-8. The screen has one or several vertical
line
(1) In this case, It isn't a problem about controller B/D or X
B/D.
(2) It may cause followings.
- It's out of order a panel
- Open or short of DATA COF FPC attached panel
- It's out of order a DATA COF attached panel
(3) Replace Module.
[ [ Screen Display Form
It may show several vertical
lines in a quarter or other
division part of screen
including left case.
2- 9. The screen has one or several
horizontal line
(1) In this case, it isn't a problem about controller B/D or X
B/D.
(2) It may cause followings.
- It's out of order a panel
- Open or short of SCAN FPC attached panel
- It's out of order a SCAN IC attached panel
(3) Replace Y DRV B/D
[ [ Screen Display Form
It may show several
horizontal lines including
2-10. The screen displays input signal
pattern but the brightness is dark
(1) In this case, Z B/D operation isn't complete.
(2) Check the power cord of Z B/D.
(3) Check the signal connector of Z B/D and Controller B/D.
(4) Replace the Controller B/D or Z B/D.
left case.
- 13 -
2-11. The screen displays other color
partially on full white screen or happens
discharge partially on full black screen.
(1) Check the declination of Y B/D set up, set down wave.
(2) Check the declination of Z B/D의 ramp wave.
(3) Measure each output wave with oscilloscope(more than
200MHz).
2-12. A center of screen is darker than
a edge of screen at full white pattern.
(1) In this case, Va voltage which goes over to X_Board from
Z_Board seems problem, check the connector.
(2) When no problem with shift connector, replace the Y_B/D
and Z_B/D each or Y & Z_B/D simultaneously.
(3) When not change after (1), (2) item managing, replace the
PSU(Power Supply).
[ [ Screen Display Form
2-13. It doesn't display a specified
brightness at specified color
(1) Check the connector of CTRL B/D input signal.
(2) Replace the CTRL B/D.