Datails Of Adjustment; Adjusting High Voltage Values; Adjust The Main Charger Grid Voltage - Sharp MX-M550U Service Manual

Job No
ADJ13 Adjusting the fusing paper guide position
ADJ14 Adjusting the paper size detection
ADJ15 Adjusting the original size
detection (in original table mode)
ADJ16 Adjusting the touch panel coordinates
ADJ17 Adjusting the supply voltage

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.
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)
Item/operation mode
Copy Auto mode
Text mode
Text/photo mode
Photo mode
Printer All modes
FAX All modes
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.
CN2
3
3) Go through the modes specified in Simulation 8-2.
SIMULATION 8-2
MAIN GRID SETTING. SELECT 1-6, AND PRESS START.
1.AUTO 580 2.CHARACTER
3.MIX 580 4.PHOTO
5.PRINTER 580 6.FAX
Press [START] key.
ADJ14A
ADJ14B
ADJ14C
ADJ15A
ADJ15B
(FLUKE87FLUKE80K-40
8-2 AUTO
CHARACTER
MIX
PHOTO
PRINTER
FAX
580
580
580
Press [SYSTEM SETTINGS] key.
MX-M700N ADJUSTMENTS 6 – 2
Adjustment item list
Adjust the paper width sensor for the manual paper feed tray
Adjust the paper width sensor for paper feed tray 3
Adjust the paper width sensor for the DSPF paper feed tray
Adjust the detection point of the original size sensor
(in original table mode)
Adjust the sensitivity of the original size sensor
is recom-
Simulation
Setting range
200 – 1000
200 – 1000
200 – 1000
200 – 1000
200 – 1000
200 – 1000
SIMULATION 8-2
MAIN GRID SETTING. INPUT VALUE, AND PRESS START.
1.AUTO (200-1000)
Press [START] key.
SIMULATION 8-2
MAIN GRID SETTING. EXECUTING···.
1.AUTO
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-
1
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.
High voltage power PWB (MC/DV/TC)
Default Connector
580 CN2
580 CN2
580 CN2
580 CN2
580 CN2
580 CN2
Press [SYSTEM SETTINGS] key.
Or after 30sec output.
Simulation
40-2
40-12
53-6
41-1
41-2
65-1
Pin # Actual voltage
3 -590 2v
3 -590 2v
3 -590 2v
3 -590 2v
3 -590 2v
3 -590 2v
580
580