Ricoh D391, Service Manual

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After every 550 cuts the blade cradle is lowered 1 mm to change the position where the blade repeatedly
impacts the blade cradle. This reduces wear on the blade cradle and extends its service life. The blade
does not move. The blade cradle motor (M40) lowers the blade cradle to change the cutting position.
• The blade starts cutting at the first position [3]
• After 550 cuts the blade cradle motor (M40) lowers the blade cradle to the next higher position.
• There are 10 cutting positions.
• After the last cut at the last position [4], the cutter control board issues a warning on the host machine
that the blade cradle must be replaced.
• The service life of the blade cradle is 5,550 cuts (550 cuts at each of the 10 positions.)
Handling Trimmings
Trimmings are dumped into the trimmings box which can be easily removed by the operator and emptied.
The frequency at which trimmings are sent to the trimmings box from depends on the size of the job.
• During a run of 10 to 99 books where trimming is done on three edges (top, bottom, fore edge)
trimmings are sent to the trimmings box after the third cut.
• During a run of 100 to 200 books where trimming is done on three edges (top, bottom, fore edge)
trimmings are sent to the trimmings box after the second cut and after the third cut.
[1] Trimmings Buffer
[2] Trimmings Box
[3] Trimmings Box Full Actuator
[4] Trimmings Sub Hopper
6. Details
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