DOWNLOAD Sharp MX-6240N / MX-7040N (serv.man32) Service Manual ↓ Size: 6.45 MB | Pages: 49 in PDF or view online for FREE

MX-7040N  OPERATIONAL DESCRIPTIONS  13 – 37

Purpose: To maintain the sensitivity of the light receiving elements
even if the environmental conditions (temperature and humidity)
vary.

Execution timing: This adjustment is executed in the process con-
trol when the temperature or the humidity varies.

Method: Use the patch written on the primary transfer to adjust the
sensor sensitivity.

Purpose: To maintain the light emitting quantity of the sensor even
if the sensor LED is aged or the environmental conditions vary.

Execution timing: Every time when the process control is made.

Method: Reflection on the surface of the primary transfer belt is
used to adjust the sensor sensitivity.

1)

When the machine enters the high density process control mode, the secondary transfer unit remains in the printing position.

2)

While changing the DV bias voltage step by step, a number of toner patches in different densities are generated on the primary transfer
belt.

Front: The C toner patch is generated.

Center: The Bk, M toner patch is generated.

Rear: The Y toner patch is generated.

3)

Each toner patch density is detected by the image density sensor, and the DV bias correction voltage is calculated in the PCU PWB so that
the proper density is obtained from the relation between the DV bias voltage at the time when each toner patch is made and the toner
patch density.

MX-7040N  OPERATIONAL DESCRIPTIONS  13 – 38

The SIM44-62 function facilitates changing the process control execution conditions.

The SIM44-62 function also allows collective change of the set contents of SIM44-4 and SIM44-28 easily.

This is used to assure stable image qualities by executing proper operations of the process control according to the machine use status.

• Changes the image density in the high density area.

• Changes the execution frequency of the process control.

Enter the SIM44-62 mode, and select the set item.

• To change the image density in the high density area, select PROCON TARGET.

• To change the frequency of the process control operations, select PROCON MODE.

1)

Select the density level.

CL ID DOWN

The densities of C, M, and Y decrease. (The C/M/Y high density process control target values decrease.)

CL ID UP

The densities of C, M, and Y increase. (The C/M/Y high density process control target values increase.)

BK ID DOWN

The density of K decreases. (The high density process control target value decreases.)

BK ID UP

The density of K increases. (The high density process control target value increases.)

ALL ID DOWN

The densities of C, M, Y and K decrease. (The C/M/Y/K high density process control target values decrease.)

ALL ID UP

The densities of C, M, Y and K increase. (The C/M/Y/K high density process control target values increase.)

NORMAL

The standard density of C, M, Y and K. (The C/M/Y/K high density process control target values are the standard values.)

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MX-7040N  OPERATIONAL DESCRIPTIONS  13 – 39

2)

Press [EXECUTE] key.

3)

Press [YES] key.

The SIM44-4 set value varies according to the selected density level.

4)

Execute SIM46-74 to adjust the copy and printer color balance.

1)

Select the execution frequency level of the process control.

SIM44-62 PROCON TARGET (Selected density level)

Dark

Normal

Light

Item (SIM44-4)

BK High

CL High

ALL High

Normal

BK Down

CL Down

ALL down

A

PCS_F TARGET

204

204

204

204

204

204

204

B

PCS_C TARGET

204

204

204

204

204

204

204

C

PCS_R TARGET

204

204

204

204

204

204

204

D

LED_K OUTPUT

21

21

21

21

21

21

21

E

PCS  ADJSTMENT  LIMIT

4

4

4

4

4

4

4

F

BELT  GROUND  DIF

1

1

1

1

1

1

1

G

BIAS_CL STANDARD DIF

60

60

60

60

60

60

60

H

BIAS_BK  STANDARD  DIF

0

0

0

0

0

0

0

I

BIAS PATCH INTERVAL

60

60

60

60

60

60

60

J

Y_PAT TARGET ID

50

60

60

50

50

45

45

K

M_PAT TARGET ID

50

60

60

50

50

45

45

L

C_PAT TARGET ID

50

60

60

50

50

45

45

M

K_PAT TARGET ID

55

45

55

45

40

45

40

N

HV BK_GROUND LIMIT

60

60

60

60

60

60

60

HIGH QUALITY2

• The execution frequency of the process control is highest.
• It is set when the color image quality is given priority.
• Every time the power is turned ON, the process control is executed.
• The execution frequency of the process control is about 3 times greater than the normal setting.
• For a user who's main jobs are color jobs of more than 100 sheets/day with priority on the color image quality.

HIGH QUALITY1

• The execution frequency of the process control is high.
• It is set when the color image quality is given priority.
• Every time the power is turned ON, the process control is executed.
• For a user of about 100 sheets/day with priority on the color image quality.

NORMAL (Default)

• The process control is executed in the normal frequency.

BW MODE

• The process control is executed in the normal frequency.
• It is set when there are little color jobs and many monochrome jobs.
• The black process control is executed.
• The color process control is occasionally executed according to the color toner consumption.
• The color toner consumption is suppressed.

PRINT PERFORMANCE

• The execution frequency of the process control is low.
• It is set when the job speed is given priority.
• The process control is executed in about 50% of the normal frequency during jobs.
• For jobs of 100 or less, the process control is executed after completion of the jobs.

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MX-7040N  OPERATIONAL DESCRIPTIONS  13 – 40

Items out of application: MC_CLEAN_TIME, PTC_CLEAN_TIME_CL, PTC_CLEAN_TIME_BK, DRUM_REVERSE

2)

Press [EXECUTE] key.

3)

Press [YES] key.

The SIM44-28 set value varies according to the selected execution frequency level of the process control.

SIM44-62 and PROCON MODE (process control execution frequency level)

Item (SIM44-28)

Image quality priority 2

Image quality priority 1

Normal

Monochrome priority

Priority on the job 

efficiency

A

INITIAL

0

0

0

0

0

B

SW  ON

0

0

3

3

3

C

 

TIME

0

0

3

3

3

D

HUM_LIMIT

0

0

0

2

0

E

HUM

0

0

0

2

0

F

REV1

0

0

0

1

1

G

REV2_BK

0

0

0

0

0

H

REV2_CL 0

0

0

0

0

I

REFRESH  MODE

1

1

1

1

1

J

DAY

1

1

1

0

1

K

HI-COV

0

0

0

1

1

L

LO-COV

0

0

0

1

1

M

TonerCA-END

0

0

1

1

1

N

JOB_STOP

1

1

1

1

1

O

AVERAGE-PAGE

3

3

3

3

3

P

LIMIT PAGE

10

10

10

50

50

Q

PIX_RATIO_BK

10

10

10

10

10

R

PIX_RATIO_CL

10

10

10

50

10

S

INTERVAL  TIME

3

3

3

3

3

T

HUM HOUR

2

2

2

2

2

U

HUM_DIF

2

2

2

4

4

V

BK_RATIO

5

15

15

30

30

W

M_RATIO

5

15

15

30

30

X

REV1_RATIO

20

20

20

40

40

Y

LOW_RATIO

5

15

15

30

30

Z

COLOR BORDER

20

20

20

100

20

AA

BK  ONLY

5

5

5

6

5

AB

P2P PV_CL

50

50

50

50

50

AC

P2P PV_Bk

50

50

50

50

50

AD

HT_DIF

1

40

40

40

40

AE

RG_ON_SYNC

0

0

0

0

0

AF

RG_TEMP_TIMER

0

0

0

0

0

AG

RG_PERM_TIMER

0

1

1

1

1

AH

RG_HOUR_TIMER

3

5

5

11

11

AI

RG_BW_SYNC

1

1

1

1

1

AN

PAR_CNT SYNC

50

50

50

50

50

AO

PAR_TIMER SYNC

30

30

30

30

30

AP

PAR_TEMP  SYNC

0

0

0

0

0