Sharp AR-C150 Service Manual page 16

AR-C150
ADJ M16 "Image position, image loss, void area
adjustment"
ADJ M17 Image quality adjustment
ADJ M18 Document size sensor adjustment
ADJ M19 Waste toner full detection level adjustment
ADJ M20 Touch panel coordinates setting
ADJ M21 Transfer belt level adjustment
(Transfer belt traveling adjustment)
ADJ M22 Fusing pressure adjustment
ADJ M23 Power voltage adjustment
ADJ M24 Manual feed paper size sensor adjustment
ADJ M25 OHP sensor adjustment
ADJ M1
DV doctor gap adjustment
This adjustment must be performed in the following cases:
•
When the developing unit is disassembled.
•
When the print density is low.
•
When there is a lot of toner dispersion abnormally.
1) Remove the developing unit from the copier, and remove the
developing unit cover and the blade cover.
2) Loosen the DV doctor fixing screw A.
3) Insert a 0.525 thickness gauge at the point of 40mm ∼ 70mm from
the DV doctor edge.
4 0 m m
3 0 m m
4) Push the DV doctor in the arrow direction and tighten the DV doc-
tor fixing screw.
(Perform the same procedure for the front and the rear frame
simultaneously.)
5) Check that the clearance is 0.525 ±0.03mm at two positions which
are 40mm ∼ 70mm from the both sides of the DV doctor.
∗
When inserting the thickness gauge, be careful not to scratch the
DV doctor and the MG roller.
ADJUSTMENT ITEM
ADJ 1 CCD gamma adjustment
ADJ 2 Image color balance adjustment (Auto)
ADJ 3 Image color balance adjustment (Manual)
ADJ 4 Copy color balance adjustment (for each copy mode)
ADJ 1 Original size sensor detection point adjustment
ADJ 2 Original size sensor sensitivity adjustment
ADJ 1 3.4 V power voltage adjustment
ADJ 2 5.0 V power voltage adjustment
ADJ 3 24 V power voltage adjustment
ADJ M2
3 0 m m
4 0 m m
This adjustment must be performed in the following cases:
•
When the developing unit is disassembled.
•
When the print density is low.
•
When there is a lot of toner dispersion abnormally.
1) Remove the developing unit cover and the blade cover, and place
the developing unit on a flat surface.
2) Tie a string to a needle or a pin.
3) Hold the string and put the needle horizontally and move it toward
the MG roller. (Do not use a clip which is too big to have a correct
position.)
4) With the needle tip at 2 ∼ 3mm from the MG roller surface, mark
the point on the surface which is on the extended line of the
needle tip. (Do not make contact between the needle tip and the
MG roller.)
5) Measure the distance between the marking position and surface P
of the developing unit, and check that the black unit is 13mm,
color unit 24mm.
If the distance is not as specified above, loosen the fixing screw A
of the main pole adjustment plate, and move the adjustment plate
in the arrow direction to adjust.
7 – 3
DV roller main pole position
adjustment
SIMULATION
50-1/50-2
63-3 (63-5)
46-24
46-21
46-10 ∼ 19, 1, 2
41-2
41-2
65-1
40-2
40-5