Light Emitting Unit - Sharp MX-M350 Service Manual

4) Loosen the fixing screw of the front or the rear frame mirror
base drive pulley.
•If La < Lb, turn the rear frame mirror base drive pulley in
direction B.
(Do not move the mirror base drive pulley shaft.)
•If La > Lb, turn the rear frame mirror base drive pulley in
direction A.
(Do not move the mirror base drive pulley shaft.)
Front side
5) Tighten the fixing screw of the mirror base drive pulley.
6) Perform procedures 1) through 3).
7) If La is not equal to Lb, perform procedures 4) and 5).
If La = Lb, the adjustment is completed.
Repeat procedures 1) through 6) until La = Lb.
E. Height adjustment of original detection light
emitting unit
1) Execute SIM 41-3.
2) Open the original cover. Press the original detection light-emit-
ting unit gradually with your finger to check the height at which
OCSW display on the LCD is highlighted.
32±0.5mm
3) Open the original detection light-emitting unit gradually to
check the height at which OCSW display turns to the normal
state.
4) If the heights are out of the specified range in procedures 2)
and 3), adjust the height of the original detection light emitting
unit by shifting the adjustment screw.
SIMULATION 41-3
PD SENSOR DATA DISPLAY.
OCSW
PD1[128]: 200 PD2[128]: 200
PD3[128]: 50 PD4[128]:
PD5[128]: 51 PD6[128]:
PD7[128]: 52
Rear side
A
B
Adjust screw
52
50
MX-M350/M450 N/U ADJUSTMENTS 8 - 12
5) After completion of adjustment, press the original detection
light emitting unit fully downward with your finger and release
it. Check that the original detection light-emitting unit moves
up smoothly.
<Specification>
Specification Adjustment position
Original size 32±0.5mm
detection position
F. Original size detection photo sensor check
1) Execute SIM 41-1.
2) Put A3 (or WLT) paper on the table glass, and check that all
the sensor displays (except for OCSW) on the LCD are high-
lighted.
3) Gradually move the unit to the left, and check that the high-
lighted sensor displays turn off one by one sequentially.
SIMULATION 41-1
PD SENSOR CHECK..
OCSW PD1 PD2 PD3 PD4
G. Original size detection photo sensor
adjustment
1) Execute SIM 41-2.
∗
At that time, check that the scanner mirror base is at the
home position.
2) Open the document cover. Select 1 without placing paper on
the table glass, and press START.
3) When COMPLETE is displayed on the LCD, press SYSTEM
SETTINGS to return to the initial screen.
4) Place A3 (or WLT) paper on the table glass, select 2 and press
START.
When COMPLETE is displayed, the adjustment is normally
completed.
∗
If ERROR is displayed, the error PD sensor is displayed.
SIMULATION 41-2
PD SENSOR ADJUSTMENT. SELECT1-2, AND PRESS START.
(PLEASE OPEN THE ORIGINAL COVER.)
1. NO ORIGINAL
2. A3 ORIGINAL
Select 1 and
press [START] key.
SIMULATION 41-2
PD SENSOR ADJUSTMENT.
NO ORIGINAL ··· COMPLETE (or "ERROR at
A3 ORIGINAL ··· INCOMPLETE
Select 2 and press [START] key.
(Error)
SIMULATION 41-2
PD SENSOR ADJUSTMENT.
NO ORIGINAL ··· COMPLETE
A3 ORIGINAL ··· COMPLETE (or "ERROR at
<Specification>
Document size detection photo
sensor adjustment
Height adjustment SIM 41-3
screw
PD5 PD6 PD7
1
Press [SYSTEM SETTINGS] key.
PD1 PD2...")
Press [SYSTEM SETTINGS]
key.
PD1 PD2...")
Specification Adjustment
COMPLETE SIM 41-2