Citizen iDP-3535, Руководство по обслуживанию

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iDP-3535 Service Manual
CITIZEN
21
7. Cutter Control Circuit (Option)
This is composed of an input circuit to control cutter position and a drive circuit to operate the cutter.
1) Input Circuit
The input circuit to control cutter position is input to PF2 of IC1 through R101, C101, and IC8 (74LS04)
to control the cutter.
2) Drive Circuit
The drive circuit to operate the cutter outputs cutter control signals from PF0 and PF1 of IC1 through
TA1 (TA8428K). It operates with the following signals.
Input Output Mode
PF0 PF1
H H Brake
L H Reverse spin
H L Regular spin
L L Stop
Fig. 7-1 Cutter Control Circuit