Sharp MX-4100N Service Manual page 140

ADJ 23
Document size sensor
adjustment
This adjustment is needed in the following situations:
* When the original size sensor section has been disassembled.
* When the original size sensor section has been replaced.
* When U2 trouble has occurred.
* When the scanner control PWB is replaced.
* When the EEPROM on the scanner control PWB is replaced.
23-A Document size sensor detection point
adjustment
1) Go through the modes specified in Simulation 41-1.
Loosen the original cover switch actuator adjustment screw
and slide the actuator position so that the display OCSW is
returned to the normal display when the height of the arm unit
top from the table glass is 32 ±0.5mm by slowly tilting the doc-
ument detection arm unit in the arrow direction and adjust.
(If the ON timing of the original cover switch is shifted, the doc-
ument detection function may malfunction.)
+ -
32 0.5mm
23-B
1) Enter the SIM41-2 mode.
Adjustment
failed
2) Execute the sensor adjustment without document.
With the document cover open, without placing a document on
the table glass, press [EXECUTE] key.
3) Place A3 (11" x 17") paper on the document table and press
[EXECUTE] key.
If the adjustment is completed normally, "DOCUMENT PHOTO
SENSOR LEVEL IS ADJUESTED" is displayed.
ADJ 24
This adjustment is needed in the following situations:
* The manual paper feed tray section has been disassembled.
* The manual paper feed tray unit has been replaced.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
MX-5001N ADJUSTMENTS 5 – 98
Adjust the sensitivity of the original size
sensor
EXECUTE
Adjustment completed
Manual paper feed tray paper
size (width) sensor adjustment
EXECUTE