Sharp MX-M550U

MX-M700N ADJUSTMENTS 6 – 2
4. Datails of adjustment
ADJ 1 Adjusting high voltage values
NOTE: Adjusting the output voltage requires the ability to measure
internal impedance of 1000 :. In addition, use high voltage
probe together. (FLUKE87FLUKE80K-40 is recom-
mended.)
1-A Adjust the main charger grid voltage
This adjustment is needed in the following situations:
* The high voltage power PWB (MC/DV/TC) has been replaced.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
(Main charger grid voltage adjustment)
1) Remove the rear cover of the machine.
2) Apply a digital multi-meter to the connector CN2 pin (3) of the
high voltage PWB and the chassis GND.
3) Go through the modes specified in Simulation 8-2.
4) Select the number that corresponds to the adjustment item
using the numeric keypad.
5) Press the Start key.
6) Press the start key to have the voltage output for 30 seconds.
The operation can be stopped with the SYSTEM SETTINGS
key.
If the output voltage is not within the requirement, do the fol-
lowing steps.
7) Enter the adjustment value using the numeric keypad.
8) Press the Start key.
(The adjustment value is put into memory, and the correspond-
ing voltage is output for 30 seconds.)
Repeat steps 7 to 8 until the output requirement is satisfied.
ADJ13 Adjusting the fusing paper guide position
ADJ14 Adjusting the paper size detection ADJ14A Adjust the paper width sensor for the manual paper feed tray 40-2
ADJ14B Adjust the paper width sensor for paper feed tray 3 40-12
ADJ14C Adjust the paper width sensor for the DSPF paper feed tray 53-6
ADJ15 Adjusting the original size
detection (in original table mode)
ADJ15A Adjust the detection point of the original size sensor
(in original table mode)
41-1
ADJ15B Adjust the sensitivity of the original size sensor 41-2
ADJ16 Adjusting the touch panel coordinates 65-1
ADJ17 Adjusting the supply voltage
Job No Adjustment item list Simulation
Item/operation mode
Simulation High voltage power PWB (MC/DV/TC)
Setting range Default Connector Pin # Actual voltage
Copy Auto mode 8-2 AUTO 200 – 1000 580 CN2 3 -590r2v
Text mode CHARACTER 200 – 1000 580 CN2 3 -590r2v
Text/photo mode MIX 200 – 1000 580 CN2 3 -590r2v
Photo mode PHOTO 200 – 1000 580 CN2 3 -590r2v
Printer All modes PRINTER 200 – 1000 580 CN2 3 -590r2v
FAX All modes FAX 200 – 1000 580 CN2 3 -590r2v
Press [START] key. Press [SYSTEM SETTINGS] key.
CN2
3
SIMULATION 8-2
1
MAIN GRID SETTING. SELECT 1-6, AND PRESS START.
1.AUTO 580 2.CHARACTER 580
3.MIX 580 4.PHOTO 580
5.PRINTER 580 6.FAX 580
Press [START] key. Press [SYSTEM SETTINGS] key.
Or after 30sec output.
SIMULATION 8-2
MAIN GRID SETTING. INPUT VALUE, AND PRESS START.
1.AUTO (200-1000)
580
SIMULATION 8-2
MAIN GRID SETTING. EXECUTING···.
1.AUTO
580