MX-1800N (serv.man14). Section 6 - Adjustments - Sharp Copying Equipment Service Manual (repair manual). Page 9

MX-1800N  ADJUSTMENTS  6 – 9

If the adjustment is not completed normally, "ERROR" is displayed.
In that case, check the following sections for any abnormality. If any
abnormality is found, repair and adjust again.
If an error occurs, the adjustment result is not revised.
* Color image density sensor
* PCU PWB
* Image sensor calibration jig (standard reflection sheet dirt,

scratch, discoloration)

NOTE: Store the image sensor calibration jig under low tempera-

ture, low humidity and dark place.

 

1)

Enter SIM44-2 mode.

2)

Touch [EXECUTE] key.
The color image density sensor, the black image density sen-
sor, and the image registration sensor are automatically
adjusted.
After completion of the adjustment, the adjustment result is
displayed and [EXECUTE] key returns to the normal display.

If the adjustment is not completed normally, "ERROR" is dis-
played.
In that case, check the following sections for any abnormality.
If any abnormality is found, repair and adjust again.
If an error occurs, the adjustment result is not revised.

* Color image density sensor
* Black image density sensor
* Image registration sensor
* PCU PWB
* Transfer belt (dirt, scratch)
* Transfer belt cleaner

A

PCS_CL 
CARB OUT

Color image density sensor 
LED current adjustment 
target value

1 – 255

108

B

PCS_CL 
DARK

Color image density sensor 
dark-voltage level 

0 – 255

0

C

PCS_CL 
LED ADJ

Color image density sensor 
LED current adjustment 
target value (PCS CL CARB 
OUT) registered LED current 
level

1 – 255

21

0

SIMULATION NO.44-02

TEST

PROCON GAIN ADJUSTMENT

EXECUTE

PCS_CL LED ADJ

xx

:

PCS_㧷 GRND

xx

:

PCS_㧷 LED ADJ

xx

:

PCS_K BELT MAX

xx

:

PCS_CL DARK

xx

:

PCS_KBELTMIN

xx

:

PCS_K DARK

xx

:

PCS_KBELTDIF

xx

:

1/4

CLOSE

PRO CON

A

PCS_CL LED ADJ

Color image density sensor light emitting quantity adjustment value

1 – 255

21

B

PCS _K LED ADJ

Black image density sensor light emitting quantity adjustment value

1 – 255

21

C

PCS_CL DARK

Color image sensor dark voltage

0 – 255

0

D

PCS_K DARK

Black image density sensor dark voltage

0 – 255

0

E

PCS_K GRND

Belt base detection level when completion of Item B adjustment 

0 – 255

0

F

PCS_K BELT MAX

Belt base detection level (Max.)

0 – 255

0

G

PCS_K BELT MIN

Belt base detection level (Min.)

0 – 255

0

H

PCS_K BELT DIF

Belt base detection level difference (Item F – Item G)

0 – 255

0

REGIST

I

REG_F LED ADJ

Image registration sensor light emitting quantity adjustment value F

1 – 255

56

J

REG_R LED ADJ

Image registration sensor light emitting quantity adjustment value R

1 – 255

56

K

REG_F DARK

Image registration sensor dark voltage F

0 – 255

0

L

REG_R DARK

Image registration sensor dark voltage R

0 – 255

0

M

REG_F GRND

Belt base detection level when completion of Item I adjustment 

0 – 255

0

N

REG_R GRND

Belt base detection level when completion of Item J adjustment

0 – 256

0

O

REG_F BELTMAX

Belt base detection level (Max.) F

0 – 255

0

P

REG_F BELT MIN

Belt base detection level (Min.) F

0 – 255

0

Q

REG_F BELT DIF

Belt base detection level difference (Item O – Item P)

0 – 255

0

R

REG_R BELT MAX

Belt base detection level (Max.) R

0 – 255

0

S

REG_R BELT MIN

Belt base detection level (Min.) R

0 – 255

0

T

REG_R BELT DIF

Belt base detection level difference (Item R – Item S)

0 – 255

0

U

REG_F PATCH (K)

Patch detection level  F (K)

0 – 255

0

V

REG_F PATCH (C)

Patch detection level  F (C)

0 – 255

0

W

REG_F PATCH (M)

Patch detection level  F (M)

0 – 255

0

X

REG_F PATCH (Y)

Patch detection level  F (Y)

0 – 255

0

Y

REG_R PATCH (K)

Patch detection level  R (K)

0 – 255

0

Z

REG_R PATCH (C)

Patch detection level  R (C)

0 – 255

0

AA

REG_R PATCH (M)

Patch detection level  R (M)

0 – 255

0

AB

REG_R PATCH (Y)

Patch detection level  R (Y)

0 – 255

0