Oki ML421 Series, Maintenance Manual, Page: 20 / 133

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Oki Data CONFIDENTIAL
HEAD DRIVE TIMING CHART
DT1
DT2
HEAD
DRIVE CURRENT
Print Data
MPU LSI
DRIVER
HEAD1-N~
HEAD9-N
Print Head
A/D bus
HEAD1~
HEAD9
Control Board
Print Data
2.1.5 Print Control
Print data is transmitted as parallel data (HEAD1~HEAD9) from LSI to print head. LSI generates
print timing and drive time.