AR-C170 (serv.man25). Setting and adjustments - Sharp Copying Equipment Service Manual (repair manual)

AR-C170M  SETTING AND ADJUSTMENTS  8 - 1

Each adjustment item in the adjustment item list is indicated with its JOB number.
Perform the adjustment procedures in the sequence of Job numbers from the smallest to the greatest.
However, there is no need to perform all the adjustment items. Perform only the necessary adjustments according to the need.
Unnecessary adjustments can be omitted. Even in this case, however, the sequence from the smallest to the greatest JOB number must be
observed.
If the above precaution should be neglected, the adjustment would not complete normally or a trouble may occur.

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1: By executing the collective adjustment of image position and magnification ratio (ADJ21) (Automatic void adjustment SIM50-28), the

adjustments of SIM50-10, 48-1, 50-12, and 50-1 can be simply and automatically performed at once.

JOB No

ADJUSTMENT ITEM LIST

SIMULATION

ADJ 1

High voltage adjustment

ADJ 1A Main charger grid voltage adjustment

8-2

ADJ 1B DV bias voltage adjustment

8-1

ADJ 1C Transfer voltage adjustment

8-6

ADJ 2

Image density sensor adjustment

ADJ 2A Color image density sensor adjustment (adjustment by the 

adjustment jig)

44-13

ADJ 2B Black image density sensor adjustment

44-2

ADJ 3

Image focus, image skew adjustment (LED (writing) unit)

64-1/61-4

ADJ 4

Image registration adjustment

ADJ 4A Image registration adjustment (Auto adjustment)

50-22

ADJ 4B Image registration adjustment (Manual adjustment)

50-20

ADJ 5

Image position/print area adjustment 
(Print engine section)

ADJ 5A Main scanning direction image position adjustment 

(Print engine section)

50-10

ADJ 5B Sub scanning direction image position/print area adjustment 

(Print engine section)

50-5

ADJ 6

Copy image distortion adjustment

ADJ 6A Scanner (reading) unit parallelism adjustment

ADJ 6B Copy image sub scanning direction distortion adjustment

ADJ 6C Copy image main scanning direction distortion adjustment

ADJ 6D Scan image distortion adjustment

ADJ 7

Copy image focus (main scanning direction copy magnification ratio) adjustment (CCD unit position adjustment)

48-1

ADJ 8

Sub scanning direction copy magnification ratio adjustment

48-1

ADJ 9

Main scanning direction copy image position adjustment (Scanner (reading) section)

50-12

ADJ 10 Copy image position/image loss/void area adjustment

50-1/50-2

ADJ 11 Copy color balance/density 

adjustment

ADJ 11A CCD gamma adjustment (CCD calibration)

63-3 (63-5)

ADJ 11B Copy color balance adjustment (Auto adjustment)

46-24

ADJ 11C Copy color balance adjustment (Manual adjustment)

46-21

ADJ 11D Copy density adjustment in low-density area

(Normally unnecessary to adjust.)

46-1/2

ADJ 11E Copy color balance density adjustment (each copy mode)

(Normally unnecessary to adjust.)

46-10 to 16

ADJ 11F CCD gamma adjustment (CCD calibration)

63-9

ADJ 11G Image edge section gamma/density adjustment 

(Black text and black line reproduction adjustment) (Normally 
unnecessary to adjust.)

46-27

ADJ 11H Copy color balance adjustment (Single color Copy mode)

(Normally unnecessary to adjust.)

46-25

ADJ 11I Auto color balance adjustment by user (Copy color balance auto 

adjustment enable setting and adjustment)

26-53

ADJ 11J Background process conditions setting in the color auto copy 

mode, image auto recognition conditions setting, text-on-dot 
recognition conditions setting, filter setting 

46-33

ADJ 12 Fusing pressure adjustment

ADJ 13 Fusing paper guide position adjustment

ADJ 14 Document size sensor adjustment

ADJ 14A Original size sensor detection point adjustment

41-2

ADJ 14B Original size sensor sensitivity adjustment

41-2

ADJ 15 Manual paper feed tray paper size sensor adjustment

40-2

ADJ 16 Touch panel coordinates setting

65-1

ADJ 17 Power voltage adjustment

ADJ 17A 3.4 V power voltage adjustment

ADJ 17B 5.0 V power voltage adjustment

ADJ 18 FAX/scanner mode image loss adjustment

50-27

ADJ 19 RSPF scanning position automatic 

adjustment

ADJ 19A RSPF scanning position automatic adjustment

53-8

ADJ 19B RSPF image lead edge adjustment

50-6

ADJ 20 RSPF lead edge skew adjustment

ADJ 21 Collective adjustment of image 

position and magnification ratio

(

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1)

50-28