Read Sharp MX-5500N / MX-6200N / MX-7000N (serv.man45) Service Manual online
MX-7000N ADJUSTMENTS 6 – 5
ADJ 5
Toner density control reference
value setting
value setting
This adjustment must be executed in the following cases:
* When developer is replaced.
* 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
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.
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)
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.
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.
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.
ADJ 6
High voltage adjustments
6-A
Main charger grid voltage adjustment
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.
* 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
:
Error
display
Error name
Detail of error
Remark
EE-EL
EL
abnormality
abnormality
(1) The sensor output level is less
than 0.5V in 1min after execution
of SIM25-02.
than 0.5V in 1min after execution
of SIM25-02.
When either
of (1) or (2)
is satisfied.
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.
than 1.5V after the adjustment for
each speed or the control voltage
exceeds 8.0V.
EE-EU
EU
abnormality
abnormality
(1) The sensor output level
exceeds 4.5V in 1min after
execution of SIM25-02.
exceeds 4.5V in 1min after
execution of SIM25-02.
When either
of (1) or (2)
is satisfied.
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.
3.45V after the adjustment for
each speed or the control voltage
is less than 2.0V.
EE-EC
EC
abnormality
abnormality
The sensor output level after the
adjustment for each speed is not
2.5V
adjustment for each speed is not
2.5V
± 0.2V.
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