Electrical Operation - Ricoh PRIPORT VT 2000 Series Service Manual

8.3 ELECTRICAL OPERATION:

Image Shifting Key
(Backward)
Image Shifting Key
(Forward)
When the Image Shifting key (forward key = SW216) is pressed, CN102-37
(CN102-31) becomes 22 V and CN102-36 (CN102-33) becomes 0 V. Thus,
the image shifting motor turns clockwise. (View from A as shown below.)
On the other hand, when the Image Shifting key (backward key = SW220)
is pressed, CN102-36 (CN102-33) becomes 22 V and CN102-37 (CN102-
31) becomes 0 V. Thus the image shifting motor turns counterclockwise.
(View from A as shown below.)
To check the image position, an encoder, which converts 16 positions to 4
bit data, is used.
Position
Hexadecimal No.
b1
b2
b3
b4
Com b4
b3
SW220
GND
SW216
GND
(
(+)
1 2 3 4
0 1 3 2
0 1 1 0
0 0 1 1
0 0 0 0
0 0 0 0
Shaft
Not used
b2
b1
CN102-36
(CN102-33)
CN101-29
CN102-37
(CN102-31)
CN101-30
CN101-14
CN102-11
(CN104-11)
CN102-13
(CN104-13)
CN102-14
(CN104-16)
CN102-15
(CN104-18)
): VT2300/VT2500
Image Shift Area
0
5 6 7 8
6 7 5 4 C
0 1 1 0
1 1 0 0
1 1 1 1
0 0 0 0
1 = Connection ON
0 = Connection OFF
Image Shifting Motor
2-123
CN119-1
CN119-2
CN119-3
CN119-4
CN119-5
GND
CN301-2
(--)
9 10 11 12 13 14 15 16
D F E A
0 1 1 0
0 0 1 1
1 1 1 1
1 1 1 1
28 February '91
+
M
b1
b2
b3
b4
B 9 8
0 1 1 0
1 1 0 0
0 0 0 0
1 1 1 0
View From A