DOWNLOAD Sharp MX-M905 (serv.man2) Service Manual ↓ Size: 90.97 MB | Pages: 127 in PDF or view online for FREE

Model
MX-M905 (serv.man2)
Pages
127
Size
90.97 MB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / Service Manual (Revised May 2017).
File
mx-m905-sm2.pdf
Date

Sharp MX-M905 (serv.man2) Service Manual ▷ View online

MX-M905  ADJUSTMENTS  5 – 81
 
ADJ 14
Setting of the auto exposure 
mode operating conditions in 
copy, scan, and FAX
This adjustment is required in the following cases:
* When the U2 trouble occurs.
* When the MFP PWB is replaced.
* When the EEPROM on the MFP PWB is replaced.
* When the SCANNER CONTROL PWB is replaced.
* When the EEPROM on the SCANNER CONTROL PWB is 
replaced.
1)
Enter the Sim. 46-19 mode.
2)
Select the auto mode exposure operating condition of each
mode with the mode button.
 
ADJ 15
Paper size detection 
adjustment
 
15-A
Manual paper feed tray paper width sensor 
adjustment
This adjustment is required in the following cases:
* When the manual paper feed tray section is disassembled.
* When the manual paper feed tray section is replaced.
* When the U2 trouble occurs.
* When the PCB PWB is replaced.
1)
Enter the Sim. 40-2 mode.
2)
Open the manual paper feed guide to the maximum width, and
press [EXECUTE] key.
[EXECUTE] key is highlighted. When the maximum width
detection level adjustment value is saved, [EXECUTE] key
returns to the normal display.
Adjustment steps and display contents
3)
Set the manual paper feed guide to the A4 width, and press
[EXECUTE] key.
[EXECUTE] key is highlighted. When the A4 size width detec-
tion level adjustment value is saved, [EXECUTE] key returns
to the normal display.
4)
Set the manual paper feed guide to the A4R width, and press
[EXECUTE] key.
[EXECUTE] key is highlighted. When the A4R size width
detection level adjustment value is saved, [EXECUTE] key
returns to the normal display
5)
Set the manual paper feed guide to the minimum width, and
press [EXECUTE] key.
[EXECUTE] key is highlighted. When the minimum width
detection level adjustment value is saved, [EXECUTE] key
returns to the normal display.
After completion of the adjustment, "COMPLETE" is displayed.
Item/Display
Content
Set value
Default
AE_MODE
Auto exposure mode
MODE1
MODE2
MODE2
 MODE3
AE_STOP_COPY
Auto B/W exposure Stop 
(for copy)
REALTIME
PRESCAN
STOP
PRESCAN
AE_STOP_FAX
Auto B/W exposure Stop 
(for FAX)
ON
ON
OFF
AE_STOP_SCAN
Auto B/W exposure Stop 
(for scanner)
REALTIME
STOP
STOP
PRESCAN
AE_FILTER
Auto exposure filter 
setting
SOFT
NORMAL
NORMAL
SHARP
AE_WIDTH
AE exposure width
FULL
FULL
PART
Display/Item
Content
MAX POSITION
Maximum width detection level adjustment
P1 (A4) POSITION
A4 width detection level adjustment
P2 (A4R) POSITION
A4R width detection level adjustment
MIN POSITION
Minimum width detection level adjustment
MX-M905  ADJUSTMENTS  5 – 82
 
15-B
Paper feed tray 4 paper width sensor 
adjustment
This adjustment is required in the following cases:
* When the paper feed tray 4 section is disassembled.
* When the paper feed tray 4 section is replaced.
* When the U2 trouble occurs.
* When the PCU PWB is replaced.
1)
Enter the Sim. 40-12 mode.
2)
Set the paper feed guide to the maximum width, and press
[EXECUTE] key.
[EXECUTE] key is highlighted. When the maximum width
detection level adjustment value is saved, [EXECUTE] key
returns to the normal display.
Adjustment steps and display contents
3)
Set the paper feed guide to the minimum width, and press
[EXECUTE] key.
[EXECUTE] key is highlighted. When the minimum width
detection level adjustment value is saved, [EXECUTE] key
returns to the normal display.
After completion of the adjustment, "COMPLETE" is displayed.
 
15-C
DSPF paper feed tray document width 
sensor adjustment
This adjustment is required in the following cases:
* When the DSPF paper feed tray section is disassembled.
* When the DSPF paper feed tray section is replaced.
* When the U2 trouble occurs.
* When the scanner PWB is replaced.
* When the EEPROM on the scanner PWB is replaced.
1)
Enter the Sim. 53-6 mode.
2)
Set the DSPF document guide to the maximum width, and
press [EXECUTE] key.
[EXECUTE] key is highlighted. When the maximum width
detection level adjustment value is saved, [EXECUTE] key
returns to the normal display.
Adjustment steps and display contents
3)
Set the DSPF paper feed guide to the A4R width, and press
[EXECUTE] key.
[EXECUTE] key is highlighted. When the A4R size width
detection level adjustment value is saved, [EXECUTE] key
returns to the normal display.
4)
Set the DSPF paper feed guide to the A5R width, and press
[EXECUTE] key.
[EXECUTE] key is highlighted. When the A5R size width
detection level adjustment value is saved, [EXECUTE] key
returns to the normal display. 
5)
Set the DSPF paper feed guide to the minimum width, and
press [EXECUTE] key.
[EXECUTE] key is highlighted. When the minimum width
detection level adjustment value is saved, [EXECUTE] key
returns to the normal display.
After completion of the adjustment, "COMPLETE" is displayed.
Display/Item
Content
MAX POSITION
Maximum width detection level adjustment
MIN POSITION
Minimum width detection level adjustment
Display/Item
Content
TRAYVOLMAX
Maximum width detection level adjustment
TRAYVOLA4R
A4R width detection level adjustment
TRAYVOLA5R
A5R width detection level adjustment
TRAYVOLMIN
Minimum width detection level adjustment
MX-M905  ADJUSTMENTS  5 – 83
 
ADJ 17
Touch panel coordinate 
adjustment
This adjustment is required in the following cases:
* When the operation panel is replaced.
* When the U2 trouble occurs.
* When the scanner control PWB is replaced.
* When the EEPROM on the scanner control PWB is replaced.
1)
Enter the Sim. 65-1 mode.
2)
Touch the four cross marks on the corners precisely. Do not
use a finger.
When the cross marks are touched precisely, they are
reversely displayed. When the touch panel adjustment is com-
pleted by touching all the four marks, the display returns to the
sub code entry menu.
Note:
When touching the cross marks, never use a sharp tip (such
as a needle and a pin).
 
ADJ 18
Waste toner detection level 
adjustment
This adjustment is required in the following cases:
* The waste toner detection section has been disassembled.
* One or more parts of the waste toner detection section have
been replaced.
Turn the waste toner detection adjustment knob so that height from
upper surface of the adjustment knob to head edge of the tension
bar is 2.0 mm.
 
ADJ 19
Fusing paper guide position 
adjustment 
(Manual adjustment of fusing 
paper guide position)
This adjustment is required in the following cases:
* When a paper jam occurs in the fusing section.
* When the lead edge of paper is folded in the fusing section.
* When skew is generated in the fusing section.
* When blur or improper focusing is generated on the lead edge
section or the rear edge section of an image on paper. 
* When wrinkle is generated on paper.
1)
Remove the fusing unit.
2)
Loosen the screw.
3)
Slide the fusing paper guide up or down to adjust the position.
* Check and mark the scale position before the adjustment
(with a pencil, etc.), and slide to the left and the right evenly.
2mm
MX-M905  ADJUSTMENTS  5 – 84
4)
Tighten the screw, and fix the fusing paper guide.
5)
Install the fusing unit to the main unit, and check the adjust-
ment result in the copy mode.
* There is no jam.
* The paper lead edge is not folded. 
* There is no skew.
* There is no blur of improper focusing on the lead edge and
the rear edge of an image on paper.
* There is no wrinkle on paper.
 
ADJ 20
Decurler roller adjustment
This adjustment must be performed in the following cases:
* If there occurred a paper jam (POIND_N) with winding around
the Drum when duplex copying.
The ADU section is provided with the decurler (curl correction)
function. The curl correction amount can be adjusted by rotating
the dial.
The adjustment can be made in 9 steps (Default value : 4). The
normally value is 4. The greater the value is from 4, the greater the
correction is.
NOTE: Perform a fine adjustment depending on the paper kind
and the use environment.
The direction of being pointed by the dial which is surrounded with
 is the curl correction amount.
 
ADJ 21
DSPF CCD calibration
 
21-A
DSPF shading adjustment
This adjustment is required in the following cases:
* When the DSPF CCD unit is replaced.
* When a U2 trouble occurs.
* When the DSPF control PWB is replaced.
(1) Note before adjustment
1)
Check to insure that there is no dirt or dust on the DSPF scan-
ning glass, the mirror, and the lens surface. (If there is, clean it
with alcohol.)
2)
Open the DSPF document scan section, and insert the white
reference jig (PSHEP5859FCZZ). Then, close the DSPF docu-
ment scan section, and close the DSPF.
3)
Enter the SIM 63-2 mode.
4)
Select "DSPF SHADING".
5)
Press [EXECUTE] key. (The shading adjustment process is
started.)
* During shading adjustment, "SHADING EXECUTING..." is
displayed.
* When [EXECUTE] key is pressed during shading adjust-
ment, the operation is interrupted.
* When shading adjustment is completed normally, [EXE-
CUTE] key returns to the normal display and "COMPLETE"
is displayed.
Insert from the notch of the white 
reference jig, and set.
White reference jig set reference 
Insert so that the rear edge of the white 
reference jig is in parallel with the transport roller 
(as shown with the dotted line in the figure).
Insert so that the rear edge of the white reference 
jig is fit with the upper transport PG edge. 
Page of 127
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