Color Adjustment And Masking Table Circuit - Sony UP-D2600S Service Manual

4-1-5. Color Adjustment and Masking Table Circuit

IC101 is a color adjustment IC.
During the printing of Y, M, and C, it performs color rotation and 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 masking ROMs based on a two ROM data conversion system. They correct the
deviation in the ideal color reproduction and color of the print.
UP-D2600/V1(E)
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)
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