AR-C330 (serv.man5). ARC330-Service Manual - Sharp Copying Equipment Service Manual (repair manual). Page 118

AR-C330  SETTING AND ADJUSTMENTS  7 - 39

This adjustment is used to adjust color balance and the density
according to the user's demand.

The adjustment is made by setting the max. density level of Y, M
and C in each color.

This adjustment is required in the following cases when the default
was changed:

• When a consumable part (developer, photoconductor drum,

transfer belt) is replaced.

• When the CCD unit is replaced.

• When the scanner (reading) section is cleaned.

• When U2 trouble occurs.

• When the ICU MAIN PWB is replaced.

• When the EEPROM of the ICU MAIN PWB is replaced.

• This adjustment is not required in the normal state, but executed

only when the user requests for.

1) Enter the SIM 46-25 mode.

2) Select the color to be adjusted with the scroll key.

3) Select the color with the color key.

4) Enter the adjustment value of each toner color with the 10-key.

(Default)

5) Cancel the simulation mode and make a copy in the single

color copy mode to check.

This setup is used to set the priority order between brightness and
gradation in the color copy mode. The setup affects the gamma
characteristic in the high-density area.

1) Enter the SIM 26-55 mode.

2) Press ENABLE or DISABLE key.

The user can perform the copy color balance and auto density
adjustment in the user program mode.
SIIM 26-53 is used to Enable or Disable this operation.

NOTE: This setup is performed only when the user understands

the copy color balance and the auto density adjustment
and is capable of performing the operation.

Full explanations on the operating procedure, notes, and
operations must be given to the user.

• When a U2 trouble occurs.

• When the PCU main PWB is replaced.

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

1) Enter the SIM 26-53 mode.

2) Select Enable/Disable with the 10-key.

Disabling = 0: YES
Enabling = 1: NO

3) Press the OK key.

When "0: YES" (Disabling) is selected, the user auto color calibra-
tion (copy color balance, auto density adjustment) menu is not dis-
played in the user program mode.

This adjustment must be performed in the following cases:

• When the original size sensor section is disassembled.

• When the original size sensor section is replaced.

• When a U2 trouble occurs.

• When the PCU main PWB is replaced.

• When the EEPROM of the PCU main PWB is replaced.

1) Enter the SIM 41-1 mode.

Gradually tilt the original detection arm unit. Loosen the origi-
nal cover switch actuator adjustment screw so that the high-
light display of OCSW is turned to the normal display when the
height of the arm unit top from the table glass is 32 ± 0.5mm.

Slide the actuator to adjust. (If the ON timing of the original
cover switch is shifted, the original detection function may mal-
function.)

Default

C

M

Y

RED

0

255

255

GREEN

255

0

255

BLUE

255

255

0

PURPLE

148

238

105

ORANGE

38

140

255

BROWN

131

255

229

ENABLE:

The contrast in the high-density area is increasing,
and the gradation is slightly decreased. (Priority is
given to brightness.)

DISABLE:

Normal picture quality (Priority is given to gradation.)