Sony Trinitron KV-25XBR Service Manual page 23

4-3. D SOARD ADJUSTMENT
OPERATION CONFIRMATION OF THE LEFT AND
RIGHT PINS DISTORTIONS AND ADJUSTMENTS
(ROUGH ADJUSTMENTS)
(1) Adjust pin phase with RV1513.
~-illIIIJ--[llill]
(2) Adjust pin amplification with RV1512.
illill]-ITIJIIJ-[[ill]
(3) Adjust U/L pin with RV1509.
illill]-ITIJIIJ-[ill]]
(4) Adjust PIN CORRECT with RV1510.
[llffi]-ITIJII]-[Nll]
(5) Adjust the horizontal amplitude to 15. 5
~~:b
frames
with RV1511.
ADJUSTMENT OF HORIZONTAL SYNCHRONIZATION
(1) Connect pin
(j)
of IC1501 to pin
@ .
At this time,
be sure to connect pin
@
of IC302 on the A board to
12 V through 10 k!l
(2) Turn the horizontal synchronizing volume (RV1501 ),
and adjust the volume so as to flow of the picture
becomes as shown in diagram.
(3) Remove pin
@
from pin
(j)
and be sure to
confirm the horizontal synchronization is normal and
whether picture becomes out of order when channel
is switched or not.
fo: too low
fo: suitable
(fo
=
15,734 Hz)
fo: too high
- 27 -
KV-25XBR KV-25XBR
RM-724/APM-X3U RM-724/APM-X3U
- 28 -
regulated-de
power supply
-~
digital
multimeter
digital
multimeter
digital
multimeter
regulated-de
power supply
~