Olympus OEP-3, Service Manual

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4-5
OEP-3 V1 (UC)
Print data transfer mode
In this mode, the image data that exists in DRAM is output to the PRT-13 board as print data during
printing.
The flow of an image signal is as described below.
The data request signal from the PRT-13 board is input to CPU (IC501).
The CPU controls a DRAM control circuit (CXD9111R: IC1001), and the DRAM control circuit converts
the image data in DRAM into print data and outputs it. After that, the data is color-adjusted, color-
rotated, and converted from RGB to YMC. Next, the data is masking-converted using two masking
ROMs and output to the PRT-13 board as print data.