AR-C330 (serv.man5). ARC330-Service Manual - Sharp Copying Equipment Service Manual (repair manual). Page 113

AR-C330  SETTING AND ADJUSTMENTS  7 - 34

Check the following items are properly adjusted. If any adjustment is improper, adjust it properly.

Check the following items.

Check that the following simulation values are properly set. If not, set it to the  proper value.

Check that the following simulation values are in the specified range. If not, set the values as specified.

Check that the following simulation values are in the specified range. If not, set the values as specified.

Check that the following items are properly set. If any adjustment is improper, adjust it properly.

Auto color balance adjustment is performed with a certain color balance (gamma) as a target. There are following two kinds of targets:

Only the service target among them allows optional setup of a color balance (gamma) target.

This setup must be performed in the following cases.

• When the user requests to customize the color balance.

• When the service target gamma is found to be incorrect.

• When the copy color balance and the density adjustment is manually performed. (SIM 46-21)

• When a U2 trouble occurs.

• When the ICU main PWB is replaced.

• When the EEPROM on the ICU main PWB is replaced.

JOB No

WORK ITEM

Trouble caused by improper adjustment

NOTE

ADJ M22 Fusing pressure adjustment Improper fusing, improper image gloss, 

paper jam, paper wrinkles

Perform the adjustment in case of improper fusing, 
improper image gloss, paper jam, or paper wrinkles.

WORK ITEM

SPEC

Phenomenon caused by oil filter problem

NOTE

Check the oil pump filter 
condition.

Check that the oil pump filter 
is not clogged.

Shortened life due to damage on the heat roller 
surface, lower image gloss, image abnormality, image 
dirt, improper fusing, paper jam,  oil leakage, oil dirt

Check and clean the oil 
filer at every servicing.

SIM No ITEM SPEC/Default value Phenomenon caused when the value is outside the specified range

NOTE

48-1

B

50

Degraded accuracy of area 
separation (degraded accuracy of 
filter process, black character and 
black-line edge process)

Degraded sharpness of black 
characters and black lines, 
increased waviness

Check that the set item B is 
set to 50. If it is not set to 50, 
the best quality cannot 
obtained.

SIM No

ITEM

SPEC

Phenomenon caused when 

the set value is changed

Phenomenon caused when the set value

is outside the specified range

NOTE

Default

Standard 

value

48-6

RRM

55

± 0

Change in the resist motor 
RPM

Improper image at the rear end in the paper transport 
direction (color shift, flow, dirt, deflection)

BELTM

51

± 0

Change in the transfer belt 
rotation speed

Greater banding, improper image (color shift, flow, 
deflection, flow), toner dispersion

FSM(L)

55

Default

+ 20

Change in the fusing roller 
rotation speed

Improper image at the rear end in the paper transport 
direction (color shift, flow, dirt, deflection)

FSM(S)

45

Default

+ 20

DM(BK)

42

± 0

Change in the black OPC 
drum rotation speed

Greater banding, improper image (color shift, flow, 
deflection, flow), toner dispersion

DM(CL)

40

± 0

Change in the color OPC 
drum rotation speed

Greater banding, improper image (color shift, flow, 
deflection, flow), toner dispersion

SIM No

ITEM

SPEC

Phenomenon caused when the value is not as specified

NOTE

46-6

B

A(OFFSET ODD)

150

Improper image scan level 
(density, color balance)

Improper image density, 
improper color balance

Be sure to set as specified.

B(OFFSET EVEN)

150

C(GAIN ODD)

150

D(GAIN EVEN)

150

G

A(OFFSET ODD)

150

B(OFFSET EVEN)

150

C(GAIN ODD)

130

D(GAIN EVEN)

130

R

A(OFFSET ODD)

150

B(OFFSET EVEN)

150

C(GAIN ODD)

160

D(GAIN EVEN)

160

JOB No

WORK ITEM

NOTE

ADJ M1

DV Doctor gap adjustment

Improper image density, improper copy, improper color balance, toner dispersion, 
developer dispersion

ADJ M2

DV roller main pole position adjustment