Adjusting Ddcp - NEC DPro2070SB Service Manual

2.4.8.2

Adjusting DDCP

(1) Input the timing No. 12 (106.25kHz/85Hz,1600x1200) 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
1 CONVERGENCE HOR.
YH-TT
2
YH-JT
YH-TB
3
YH-JB
XH-L
4
5
XH-R
Problem Adjustment point
R B
YH-M (Top)
YH -M (Bottom)
2 - 18
Adjustment procedure
Adjust to 0.05mm or less.
(Adjustment target is 0mm.)
YH (Top)
Adjust YH (Top) to 0.05mm or
less with balance adjustment
of YH-TT and YH-JT.
(Adjustment target is 0mm.)
(NOTE)
The operating amount at YH-
M(Top) when moving YH-TT
and YH-JT : YH-TT < YH-JT
Adjust YH (Bottom) to 0.05mm
or less with balance
adjustment of YH-TB and YH-
JB. (Adjustment target is
0mm.)
(NOTE)
The operating amount at YH-M
(Bottom) when moving YH-TB
and YH-JB :
YH (Bottom)
YH-TB < YH-JB
XH(Left)
Adjust to 0.1mm or less.
XH(Right)
Adjust to 0.1mm or less.