Adjustments Relating To Process Control - Sharp SF-2040 Service Manual

6. Adjustments relating to process control

(The adjustment procedures differ according to the state of service
maintenance.)
A. Adjustment when installing the machine
•
Unpack the machine (lock release).
•
Install and supply the supply parts.
•
Turn on the power.
(1) Execute simulation No. 25-2.
Over toned error → EE(EL)
Under toned error → EE(EU)
B. Adjustment in maintenance within the life of
supply part
•
Complete the maintenance.
•
Turn on the power.
(1) Execute simulation No. 44-1. Process control state check
[+ 1] Process control correction valid
[+ 2] Optical system dirt correction valid
[+ 4] OPC drum film wear correction valid
[+10] Toner control A correction valid
[+20] Toner control B correction valid
Note: [37] All valid
For this adjustment, check that the setting value is "7."
(2) Compulsorily execute simulation No. 44-6 process control.
(3) Execute simulation No. 46-1 copy exposure adjustment.
Execute copy exposure adjustment according to the procedure
of [8]-5.
C. Adjustment when replacing the developer
•
Complete replacement of the developer.
•
Turn on the power.
(1) Execute simulation No. 25-2.
Over toned error → EE(EL)
Under toned error → EE(EU)
(2) Execute simulation No. 46-1 copy exposure adjustment.
Execute the copy exposure adjustment according to the proce-
dure of [8]-5.
D. Adjustment when replacing the drum
(Photoconductor)
•
Complete replacement of the drum.
•
Turn on the power.
(1) Execute simulation No. 24-7 drum film wear correction counter
reset.
(2) Execute simulation No. 44-2 drum mark sensor level adjustment.
(3) Execute simulation No. 44-6 compulsory execution of process
control.
(4) Execute simulation No. 46-1 copy exposure adjustment.
Execute the copy exposure adjustment according to the proce-
dure of [8]-5.
E. Adjustments when replacing the developer and
the drum (photoconductor)
•
Complete replacement of the drum.
•
Complete replacement of the developer.
Toner density reference value
setting
Toner density reference value
setting
Standard value: 204 ±10
•
Turn on the power.
(1) Execute simulation No. 24-7 drum film wear correction counter
reset.
(2) Execute simulation No. 25-2 toner density reference value set-
ting
Over toned error → EE(EL)
Under toned error → EE(EU)
(3) Execute simulation No. 44-2 drum mark sensor level adjustment.
(4) Execute simulation No. 44-6 compulsory execution of process
control.
(5) Execute simulation No. 46-1 copy exposure adjustment.
Execute the copy exposure adjustment according to the proce-
dure of [8]-5.
F. Adjustment when replacing/cleaning the drum
mark sensor
(1) Execute simulation No. 44-2 drum mark sensor level adjustment.
G. Adjustment when replacing/cleaning the image
density sensor
(1) Execute simulation No. 44-3 image density sensor level adjust-
ment.
H. Adjustment when replacing the sensor level
adjustment VR PWB
Execute the procedures of F and G in the above.
1. Note: This model emplyes the high-sensitivity drum,
which requires special care against pre-exposure.
1) Never expose the drum outside the bag. (Keep it in a
black bag.)
2) When istalling this model, avoid facing the front cover
toward a light source or window.
Avoid opening the front cover as far as possible.
2. Other note
1) If starting powder is attached to the density sensor
when replacing the drum/blade, it may cause faulty
operations of the sensor. Be sure to clean and remove
powder.
7 – 23
Standard value: 204±10
Standard value: 204±10
Standard value: 204±10