Oki OKIFAX4550 Maintenance Manual page 342

IC2
MPHA
MPHB
MPHC
MPHD
IOGA6
MPT4
MPT3
MPT2
MPT1
+30V
CPU1
SH7034
Clutch
Figure A.26 (1/2) Related Signals of Send Motor and Clutch
MPHA
MPHB
MPHC
MPHD
41309401TH Rev.4
IC7
Send motor
drive
(1-2 phase excitation)
TR505/TR506
Clutch
drive
t t t t t t t
Figure A.26 (2/2) Timing Chart of Send Motor
R46
CN1
A1
2
4
A2
B1 1
3
B2
CN2
1
PJON
OV
2
t
STD/FINE:t=1.25ms (800pps)
EX-FINE:t=2.5ms (400pps)
Send motor
M
Clutch
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