Adjust The Developing Doctor Gap; Adj 2 Adjusting The Developing Unit - Sharp AR-M550N Service Manual

4) Go through the modes specified in Simulation 8-18.
SIMULATION 8-18
TRANSFER CLEANING ROLLER SETTING. SELECT 1-2, AND
PRESS START.
1.CRHV PLUS 200
2.CRHV MINUS 200
Press [START] key. Press [CUSTOM SETTINGS] key.
SIMULATION 8-18
TRANSFER CLEANING ROLLER SETTING. INPUT VALUE, AND
PRESS START.
1.CRHV PLUS (0-250)
Press [START] key.
SIMULATION 8-18
TRANSFER CLEANING ROLLER SETTING. EXECUTING···.
1.CRHV PLUS(0-250)
5) Select the number that corresponds to the adjustment item (CRHV
PLUS / CRHV MINUS) using the numeric keypad.
6) Press the Start key
7) Press the Start key to have the voltage output for 30 seconds.
The operation can be stopped with the CUSTOM SETTINGS key.
If the output voltage is not within the requirement, do the following
steps.
8) Enter the adjustment value using the numeric keypad.
9) Press the Start key.
(The adjustment value is put into memory, and the corresponding
voltage is output for 30 seconds.)
Repeat steps 8 to 9 until the output requirement is satisfied.
ADJ 2 Adjusting the developing unit
ADJ 2A

Adjust the developing doctor gap

This adjustment is needed in the following situations:
• The developing unit has been disassembled.
• The print density is low.
• The toner is excessively dispersed.
1) Remove the developing unit of the machine.
2) Remove the developing unit cover and blade cover.
1
200
Press [CUSTOM SETTINGS] key.
Or after 30sec output.
200
AR-M550/M620/M700 SETTING AND ADJUSTMENTS 7 - 6
3) Loosen the DV doctor fixing screws.
4) Manually turn the DV roller to align the marking on the DV roller
surface with the DV doctor position.
5) Insert a 0.525mm clearance gauge in between the DV roller and
DV doctor so that the gauge is positioned at a distance of 40 mm to
70 mm from the DV doctor end face.
6) Tighten the DV doctor fixing screws while pressing the DV doctor
in the arrow direction.
(This should be done for both front and rear frames.)