Scanner And 2Nd/3Rd Mirrors Carriage Movement Mechanism - Minolta CF910 Service Manual

Full Color, Manual Mode, Full Size:
Image Request Signal
(I-REQ)
Scan Start Timing Signal
(PRE-TRIG)
Lamp ON Signal
(LMPON)
Exposure Lamp
(LA1)
Sub-Scanning Area Signal
(VD)
1154SBM0905A
9-5. Scanner and 2nd/3rd Mirrors Carriage Movement Mecha-
nism
<Scanner>
• The Scanner is stationary under the shading sheet on the right-hand side whenever
Power Switch S1 is turned ON, a misfeed or malfunction is reset, or the Front Door is
opened and closed.
• When the Start Key is pressed, it moves to the scan start position on the left-hand side
while making a shading correction.
• The Scanner projects an even amount of Exposure Lamp LA1 light, as it moves, onto the
entire surface of the original and reflects this light, with the 1st Mirror, onto the 2nd and
3rd Mirrors.
• It is driven by Scanner Drive Motor M1 with the Scanner Drive Cables attached to the
front and rear.
<2nd/3rd Mirrors Carriage>
• The light reflected off the 1st Mirror is directed to the Lens through the 2nd and 3rd Mir-
rors. It then strikes CCD Sensor Board PWB-A.
• Drive for the 2nd/3rd Mirrors Carriage comes from M1 via two cables. The carriage
moves at a speed half that of the Scanner.
Start Key ON
1st Scan
H
L
0.5sec
H
L
H
L
B
ON
OFF
A
H
L
A : Varies for different paper sizes and zoom ratios.
B : Shading correction
M-35
2nd Scan
0.5sec 0.5sec
A
3rd Scan 4th Scan
0.5sec 0.5sec
A A
1154T42MCA