Sharp MX-4100N Service Manual page 48
Digital full color multifunctional system
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Also See for MX-4100N:
- Operation manual (903 pages) ,
- Quick start manual (120 pages) ,
- Software setup manual (44 pages)
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Remark:
Normally when the default value is set, the specified voltage is out-
putted.
The adjustment value of each color mode is specified on the label
attached to the MC/DV high voltage power PWB. Enter that value.
GBK:XXX GBC:XXX GBM:XXX GBY:XXX
When the adjustment value (specified value) of the middle speed
mode is set, the adjustment values of the other modes are auto-
matically set according to the middle speed mode setting in a cer-
tain relationship.
To adjust all the modes individually, first adjust the middle speed
mode, and then adjust the other mode.
If the middle speed mode is adjusted after adjustment of all the
modes individually, the adjustment values of the other modes are
automatically changed. Use care for that.
Therefore, unless there may be an abnormality in the output volt-
age, there is no need to check the output value.
If it must be checked that the normal voltage is outputted or if an
adjustment is required by referring to the output voltage, follow the
procedures below.
1)
Remove the rear cover of the machine.
2)
Open the PWB holder.
3)
Enter the SIM 8-2 mode.
4)
Select an output mode to be adjusted with the mode key and
the scroll key.
5)
Check the relationship between the check pin on the MC/DV
high voltage PWB and each adjustment mode.
6)
Attach a digital multi-meter to between the check pin and GND
on the MC/DV high voltage PWB corresponding to the
adjusted mode.
7)
Press [EXECUTE] key.
The main charger grid voltage is outputted for 30sec.
If this procedure is executed for a long time, the OPC drum
and the developing roller may be adversely affected. Use this
procedure as short as possible.
If possible, use a old developer unit and OPC drum for this
adjustment.
8)
Check the monitor voltage with the digital multi-meter.
If the monitor voltage is not in the range of the specified values
shown in the table above, change the adjustment value and
adjust. If the specified value voltage is not obtained even
though the adjustment value is changed, the following parts
may be defective.
• MC/DV high voltage PWB
• PCU PWB
• Development unit
• OPC drum unit
• High voltage circuit electrode
2
1
MX-5001N ADJUSTMENTS 5 – 6
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