Hitachi 43FWX20B, Training

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PAGE 07-25
DP-2X DIGITAL CONVERGENCE ALIGNMENT PROCEDURES
Complete Digital Convergence Alignment
Center the Overlay Jig geometrically on the screen
Clear RAM data (DCU RAM)
Select the External Center Cross Signal
by pressing the EXIT button 5 times.
No DCU Correction
added results in severe
pincushion distortion
Center Magnet Adjustments
Press and hold the SERVICE ONLY
S W I T C H , t h e n p r e s s t h e P O W E R
Button and release, picture appears.
Release the SERVICE ONLY SWITCH
again. DCU Grid appars.
Internal
Digital "Cross
Hatch Signal"
is projected
Service only
switch
is on the
Deflection
PWB.
Receive any NTSC signal (Crosshair if possible)
Set SCREEN FORMAT TO NORMAL mode
Align the G,R,B individual
c e n t e r c r o s s e s t o t h e i r
respective marks on the
Overlay using the Yoke
Center Magnets
Red = Left
Blue = Right
Green = Center
See Offset Chart for exact distances Page 06-09
External Selected Center
Cross with no DCU center
data
R G B
R
G
B
Front View
Use the Centering
Magnets closest to
the Yoke
A