Ricoh PRIPORT VT 2000 Series Service Manual page 63

28 February '91
2.6.3 Sub-scanning Reduction:
E Phase
D Phase
C Phase
Original Transort Motor
∅A CN605-1
∅B CN605-3
∅C CN605-5
∅D CN605-7
∅E CN605-9
NOTE:
The reduction ratio change is performed by changing the pulse
width "t".
CN605-1
A Phase
CN605-2
CN605-3
B Phase
CN605-4
CN605-5
CN605-6
CN605-7
CN605-8
CN605-9
CN605-10
t
0 1 2 3 4
1 line
(1/16 mm)
0A 24V
CN403-17
0B
CN403-18
0C
CN403-19
0D
CN403-20
0E
CN403-21
Transort Motor
Drive Circuit
A/D Converter
5 6 7 8
2-36
5V
Motor
Drive
Timing
Pulse
Generator
CK
Image Processing PCB
9 13
10 11 12
Timing
Pulse
Generator