Adjusting Ddcp - NEC FP1355 Service Manual

2.4.9.2

Adjusting DDCP

(1) Input the timing No. 12 (106.25kHz/85Hz, 1600 x 1200) crosshatch pattern.
(2) Enter the factory mode.
(3) Adjust in the following order. (It is assumed that the center and axial misconvergence on
the previous page have already been adjusted.)
Adjustment
Adjustment item name
order
4H-COIL
HORIZ-
1
CONVERGENCE
(BASIC CONVERGENCE
HORIZONTAL)
YH-TT
2
YH-JT
YH-TB
3
YY-JB
XH-L
4
5
XH-R
Problem Adjustment point
R B
YH-M (Top)
YH -M (Bottom)
YH (Bottom)
2 - 18
Adjustment procedure
Adjust to 0.05mm or less.
(Adjustment target is 0mm.)
YH (Top)
Adjust to 0.05mm or less.
(Adjustment target is 0mm.)
(NOTE)
The operating amount at YH-
M(TOP) when moving YH-TT
and YH-JT : YH-TT < YH-JT
Adjust to 0.05mm or less.
(Adjustment target is 0mm.)
(NOTE)
The operating amount at YH
(BOTTOM) when moving YH-
TB and YH-JB :
YH-TB < YH-JB
XH(Left)
Adjust to 0.1mm or less.
XH(Right)
Adjust to 0.1mm or less.