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DFX-8500
Rev. B
1-40
1.5.3 C204 DRV Board
The C204 DRV board is the driver board specially for the printer mechanism. The ½ printhead, printhead
fan, plunger, PF (paper feed) motor, CR (carriage) motor, CR fan, PG (platen gap) motor, and RF (ribbon
feed) motor drive circuits are located on the driver boards.
Sensor signals from the printer mechanism are connected to the main board via these boards.
Major ICs on the DRV are as follows:
CR motor drive IC: STK561 (IC1)
PF motor drive IC: STK5713B (IC2)
Comparator IC: uPC393C (IC3)
.
Figure 1-27. C204 DRV Board