Mitsubishi Electric 1786FD2 Service Manual page 73

MEA 1786FD2 CRT Monitor Service Guide
5. Focus adjustment
a. Input mode 68.68K [UVGA8] with green crosshatch pattern
b. Adjust V(F2) Focus VR of FBT to make vertical line between center
and corner area of CRT clear
c. Adjust H(F1) to make horizontal line between center and corner area
of CRT clear
d. Repeat step b and c to get the best focus
6. Convergence adjustment
a. Input mode 80K [WS7] with crosshatch patterns
b. Adjust VRs of Yoke and 4-pole , 6-pole to meet specification
7. Color Temperature auto alignment
A. PREPARING ITEMS
a. PC
b. RS232 BOX
c. RS232 CABLE (9P) TO PC
d. RS232 BOX TO MONITOR CABLE (3P)
e. COLOR ANALYZER (CA100)
f. CA100 CABLE TO PC
g. ADJUST PROGRAM
B. Alignment procedure
a. Press "SPACE BAR " to get raster pattern and set contrast and brightness to maximum position,
adjust the G2 VR such that the max. color of R.G.B color bar on the monitor is in the mark region
b. Press "SPACE BAR" to do auto color temperature adjustment and color tracking
C1: 9300K X= 283
C2: 6500K X= 313 ± 15
c. Press "SPACE BAR" to get full white pattern and set contrast and brightness to maximum position ,
adjust ABL adjustment to let
d. Press "SPACE BAR" to get 3" block and finish the adjustment
(Release NEW Version)
± 15 Y=297 ± 15
Y=329 ± 15
Y = 31ft-l ± 2 ft-l
Alignment Procedure
3