Convergence Adjustment - JVC DT-V1710CG Service Manual

4.10.7 CONVERGENCE ADJUSTMENT

CONVERGENCE ADJUSTMENT
Measuring Instruments
Card (Slot)
Test Points
Adjustment Points
Notes:
•
Perform the following adjustments after completing the Screen
Voltage Coarse adjustment, X-Ray Protector, High Voltage and
Focus adjustments.
•
Ensure that CN0RD and CN00R on the S. Correction PWB are
connected to the Deflection yoke and Main PWB.
(1) Set the VR504 and VR505 on S. CORRECTION PWB into the position
of a center.
(2) Apply the 1080/60i crosshatch signal with circle pattern to INPUT A
(Terminal Y on the Component/RGB Input Card).
(3) Turn the VR504 to optimize the horizontal convergence value at the
center of the screen (turning the potentiometer counterclockwise shifts
BLUE toward the right with respect to RED).
(4) Turn the VR505 to optimize the vertical convergence value at the center
of the screen (turning the potentiometer counterclockwise shifts BLUE
downward with respect to RED).
S. CORRECTION PWB
MAIN PWB
Signal generator (Crosshatch signal with circle pattern)
Component/RGB Input Card (Slot 1)
VR504 (CONV_H) [S. CORRECTION PWB]
VR505 (CONV_V) [S. CORRECTION PWB]
TP-XR
TP-G
Front side
B
A
Aberration of color
(Top surface view of S. CORRECTION PWB)
VR505
VR504
(Lower) (Upper) (Left)
Escutcheon
Area A Area B
≤ 0.25mm ≤ 0.35mm
Front side
(Right)
(No. 52152) 1-47