MX-6201N, MX-7001N (serv.man18). ADJUSTMENTS SECTION - Sharp Copying Equipment Service Manual (repair manual). Page 5

MX-7001N  ADJUSTMENTS  6 – 5

 

This adjustment must be executed in the following cases:
* When developer is replaced.

NOTE: Be sure to execute this adjustment only when developer is

replaced. Never execute it in the other cases.

1)

With the front cover (lower) open, enter SIM25-2.

2)

Close the front cover (lower).

3)

Select a developing unit to be adjusted.

4)

When [EXECUTE] key it pressed, it is highlighted. The devel-
oping roller rotates, and the toner sensor detects toner density,
and the output value is displayed.
The above operation is executed for 3 minutes, and the aver-
age value of the toner density sensor detection level is set
(saved) as the reference toner density control value.
When the reference toner density control adjustment operation
is completed, [EXECUTE] key display return, to normal from
highlight. This makes you know whether the adjustment opera-
tion is completed or not.
The above operation is executed each of the lower speed
mode, the middle speed mode and the high speed mode, and
the reference toner density control value is set for each of
them.
NOTE: If the operation is interrupted within 3 minutes, the 

adjustment result is not reflected (enabled).

When [EXECUTE] key is pressed during rotation, the opera-
tion is stopped and [EXECUTE] key returns to the normal dis-
play.
If [EE-EU], [EE-EL], or [EE-EG] is displayed, setting of the ref-
erence toner density control value is not completed normally.

5)

Use SIM24-5 to clear the developer counter.

6)

Use SIM44-27 to clear the half-tone correction data.

NOTE:
1)

When replacing developer, always replace all the three colors
of Yellow, Magenta, and Cyan.
If only one color is replaced, color balance may be adversely
affected. Black developer can be replaced individually.

2)

After replacement of developer or the photoconductor, be sure
to execute SIM44-27 to clear the half-tone correction data.
If the above procedure is neglected, the half-tone correction
may not be performed correctly.

 

 

This adjustment must be executed in the following cases:
* When the MC/DV high voltage power PWB is replaced. 
* When U2 trouble occurs. 
* When the PCU PWB is replaced.
* When EEPROM on the PCU PWB is replaced.

EXECUTE

M

K

Adjustment completed

EXECUTE

Abnormal end

Y

C

AUTOMATIC DEVELOPER ADJUSTMENT

EXECUTE

TCD_K

45

:

1/1

SIMULATION NO.25-02

TEST

CLOSE

TCV_K

45

:

TCD_C

50

:

TCD_M

50

:

TCD_Y

45

:

TCV_C

50

:

TCV_M

50

:

TCV_Y

50

:

M

K

M

Y

C

K

AUTOMATIC DEVELOPER ADJUSTMENT

EXECUTE

AT DEVE ADJ_L_K

128

:

AT DEVEVO_L_Y

128

:

1/1

SIMULATION NO.25-02

TEST

CLOSE

AT DEVE ADJ_M_K

128

:

AT DEVE VO_M_Y

128

:

AT DEVE ADJ_L_C

128

:

AT DEVE VO_M_K

128

:

AT DEVE ADJ_L_M

128

:

AT DEVE VO_M_C

128

:

AT DEVE ADJ_L_Y

128

:

AT DEVE VO_M_M

128

:

AT DEVE ADJ_M_C

128

:

AT DEVE VO_H_K

128

:

AT DEVE ADJ_M_M

128

:

AT DEVE ADJ_M_Y

128

:

AT DEVE ADJ_H_K

128

:

AT DEVEVO_L_K

128

:

AT DEVEVO_L_M

128

:

AT DEVEVO_L_C

128

:

or process interrupt

Y

C

AUTOMATIC DEVELOPER ADJUSTMENT

EXECUTE

TCD_K

EE-EL

:

1/1

SIMULATION NO.25-02

TEST

CLOSE

TCV_K

:

TCD_C

50

:

TCD_M

EE-EL

:

TCD_Y

45

:

TCV_C

:

TCV_M

:

TCV_Y

:

M

K

M

Y

C

K

AUTOMATIC DEVELOPER ADJUSTMENT

EXECUTE

AT DEVE ADJ_L_K

185

:

AT DEVEVO_L_Y

128

:

1/1

SIMULATION NO.25-02

TEST

CLOSE

AT DEVE ADJ_M_K

185

:

AT DEVE VO_M_Y

128

:

AT DEVE ADJ_L_C

128

:

AT DEVE VO_M_K

185

:

AT DEVE ADJ_L_M

185

:

AT DEVE VO_M_C

128

:

:

AT DEVE ADJ_L_Y

128

:

AT DEVE VO_M_M

185

AT DEVE ADJ_M_C

128

:

AT DEVE VO_H_K

128

:

AT DEVE ADJ_M_M

185

:

AT DEVE ADJ_M_Y

128

:

AT DEVE ADJ_H_K

185

:

AT DEVEVO_L_K

185

:

AT DEVEVO_L_M

185

:

AT DEVEVO_L_C

128

:

EE-EL

EL 
abnormality

(1) The sensor output level is less 
than 0.5V in 1min after execution 
of SIM25-02.

When either 
of (1) or (2) 
is satisfied.

(2) The sensor output level is less 
than 1.5V after the adjustment for 
each speed or the control voltage 
exceeds 8.0V.

EE-EU

EU 
abnormality

(1) The sensor output level 
exceeds 4.5V in 1min after 
execution of SIM25-02.

When either 
of (1) or (2) 
is satisfied.

The sensor output level exceeds 
3.45V after the adjustment for 
each speed or the control voltage 
is less than 2.0V.

EE-EC

EC 
abnormality

The sensor output level after the 
adjustment for each speed is not 
2.5V 

± 0.2V.