Oki Pos 407II - Manual (Page 63)

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Note:
. Pin must be shield drain wire connected to peripheral device frame ground.
. It is not possible to drive two drives simultaneously.
. The peripheral drive duty must satisfy the following:
ON time / (ON time + OFF time) 0.
4. Minimum resistance for coils L1 and L2 is 24 Ω.
. Absolute maximum ratings for diodes D and D (Ta = °C) are:
Average Rectified Current Io = 1 A
6. Absolute maximum rating for transistors TR and TR (Ta = °C) are:
Collector current Ic = A
Drive Output: V, Max. .0 A
TR, TR: Transistor SD 66 or equivalent
R=0 kW
R= kW
Reference
2SD 1866 Circuit Configuration