3. ADJUSTMENT
3.1 CS LED Lights-on Duration Adjustment
a) Overview
This adjustment is used to eliminate uneven scanning which can result from variations in light intensity
between individual LED’s. Performing the adjustment will therefore have an effect on scanned and
copied images.
The adjustment value is registered in an SRAM IC which has lithium battery back-up and will not be lost
even if power is turned off. However, the SRAM data can become damaged, for example by battery
depletion. In this case, the machine checks the data’s validity the next time power is turned ON. If the
data is invalid, the adjustment is made automatically. If, at this time, the DES detects a document, the
machine sounds an error alarm and displays the message
CHECK DOCUMENT
. After the document is
removed, the message
PRESS START/COPY
is displayed. When the
START/COPY
key is pressed,
the machine performs the adjustment once again. Because the user is automatically prompted, it is almost
never necessary to perform this adjustment during normal use. However, if the SCNT board, Contact
sensory ass’y, or lithium battery is replaced, be sure to perform this adjustment. Also, if the color or
brightness of scanned or copied images is faulty, performing this adjustment may correct the problem.
b) Procedure
(1) Check that the operation panel is closed correctly, then perform the adjustment by following the steps
described below
.
(2) The adjustment procedure is finished when the display reads
PLEASE WAIT
, then reverts to
#5
CALIBRATION
.
When contact sensor malfunction
If, immediately after
PLEASE WAIT
is displayed, an error alarm sounds and the display
now reads
PRESS START/COPY
, the sensor output is abnormal even after changing
the LED lights-on duration, and the optimal lights-on duration cannot be determined.
Check all connector cables, and verify that the LED illumination during the adjustment.
If illumination does not occur, there may be a contact sensor malfunction.
Part 1: Facsimile
3-6
FUNCTION
#1 MEMORY CLEAR
Several seconds later
0
#5 CALIBRATION
PLEASE WAIT
START/COPY
#5 CALIBRATION
Figure 3-2 CS LED Lights-on Duration Adjustment Operation
NOTE
Summary of Contents for MultiPASS C50
Page 5: ...III REVISION HISTORY REVISION CONTENT 0 Original III ...
Page 16: ...XIV This page intentionally left blank ...
Page 17: ...Part 1 Facsimile ...
Page 18: ......
Page 19: ...Chapter 1 General Description ...
Page 20: ......
Page 71: ...Chapter 1 General Description 1 51 Waste Ink absorber Figure 1 23 Waste Ink Absorber ...
Page 78: ...Part 1 Facsimile 1 58 This page intentionally left blank ...
Page 79: ...Chapter 2 Technical Reference ...
Page 80: ......
Page 116: ...Part 1 Facsimile 2 36 This page intentionally left blank ...
Page 117: ...Chapter 3 Maintenance and Service ...
Page 118: ......
Page 143: ...Chapter 3 Maintenance Service 3 25 This page intentionally left blank ...
Page 175: ...Chapter 3 Maintenance Service 3 57 Figure 3 30 Print Pattern Sample ...
Page 189: ...a 2 System dump list Chapter 3 Maintenance Service 3 71 Figure 3 37 System Dump List 1 2 ...
Page 197: ...Chapter 4 Appendix ...
Page 198: ......
Page 216: ...Part 1 Facsimile 4 18 This page intentionally left blank ...
Page 221: ...Part 2 Printer ...
Page 222: ......
Page 223: ...Chapter 1 General Description ...
Page 224: ......
Page 238: ...Part 2 Printer 1 14 This page intentionally left blank ...
Page 239: ...Chapter 2 Technical Reference ...
Page 240: ......
Page 255: ...Chapter 3 Maintenance and Service ...
Page 256: ......
Page 265: ...Chapter 4 Appendix ...
Page 266: ......
Page 270: ...Part 2 Printer 4 4 This page intentionally left blank ...
Page 271: ...0298 SC 2 00 0 ...