Sony UP-D2550S Service Manual page 36

[Color Adjustment, Masking Table]
IC101 is a color adjustment IC.
During the printing of Y, M, and C, it performs color rotation, RGB-YMC conversion of the
printed data.
It also performs color adjustment using the look-up table memory.
The table data is memorized by the CPU program ROM. The following shows the data flow.
From IC102
Y PRINTING
COLOR0 = H
COLOR1 = L
M PRINTING
COLOR0 = L
COLOR1 = H
C PRINTING
COLOR0 = H
COLOR1 = H
BW PRINTING
COLOR0 = L
COLOR1 = L
IC105 and IC106 are two ROM data conversion type masking ROMs. They correct deviation in
the ideal color reproduction and color of the print.
4-4
IC101 Operation
R
G
B
R
G
B
R
G
B
R
G
B
Y (MAIN)
C (SUB1)
M (SUB2)
M (MAIN)
Y (SUB1)
C (SUB2)
To IC105
IC106
C (MAIN)
M (SUB1)
Y (SUB2)
M (MAIN)
Y (SUB1)
C (SUB2)
UP-D2550S (UC,CE)