AR-405 (serv.man9). AR405 Service Manual-Setting and Adjustments — Sharp Copying Equipment Service Manual (repair manual)

Model
AR-405 (serv.man9)
Pages
18
Size
693.07 KB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / AR405 Service Manual-Setting and Adjustments
File
ar-405-sm9.pdf
Date

View Sharp AR-405 (serv.man9) Service Manual online

CODE: 00ZAR405//A1E
Digital Copier
AR-280
AR-285
AR-335
MODEL
AR-405
Parts marked with "
!
" is important for maintaining the safety of the set. Be sure to replace these parts with specified
ones for maintaining the safety and performance of the set.
SHARP CORPORATION
AR-405
[ 1 ] GENERAL  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3-A
[ 2 ] SPECIFICATIONS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
[ 3 ] OPTIONS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
[ 4 ] CONSUMABLE PARTS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
[ 6 ] EXTERNAL VIEW AND INTERNAL STRUCTURE  . . . . . . . . . 6-10
[ 7 ] SETTING AND ADJUSTMENTS  . . . . . . . . . . . . . . . . . . . . . . . . 7-1
[ 8 ] SIMULATION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
[ 9 ] MAINTENANCE  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1-A
[10] DISASSEMBLY AND ASSEMBLY  . . . . . . . . . . . . . . . . . . . . . . 10-1
[11] TROUBLE CODE LIST  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
CONTENTS
[7] SETTING AND ADJUSTMENTS
Descriptive Conventions
For the sake of keeping the use of information common among several models, this manual uses the following conventions:
AR-4XX:
Refers to model AR-405,
AR-2X1/3X1/4XX/250/XX6: AR-281/286/405/250/336,
AR-2XX, 3XX:
Refers to model AR-280/285/335 for this issue.
*
The "X" stands for any numeral 0 to 9.
1. List of adjustment items
Section
Adjustment item
Adjustment
procedure
A. Process
(1)
Developing doctor gap
adjustment
(2)
MG roller main pole position
adjustment
MG roller main
pole position
adjustment
(3)
Developing bias voltage
adjustment
SIM8-1/44-15
(4)
Main charger grid voltage
adjustment
SIM8-2/44-15
(5)
Transfer charger adjustment
SIM8-6
(6)
Separation charger bias
voltage adjustment
SIM8-7
(7)
Photoconductor marking
sensor sensitivity (gain)
adjustment
SIM44-2
Image density sensor
sensitivity (gain) adjustment
SIM44-2
SIM44-2
(8)
Toner concentration
adjustment (auto developer
adjustment)
SIM25-2
B. Laser scanner
(exposure)
(1)
Horizontal image distortion
adjustment
LSU lever
adjustment
(2)
Print off-center adjustment
SIM50-10
(3)
Laser power setting (copier
mode)
SIM61-2/44-15
SIM61-4
Printer mode
C. Scanner
(1)
Vertical image distortion
balance adjustment
Copy lamp
unit installing
position
adjustment
(2)
Vertical image distortion
balance adjustment
No. 2/No. 3
mirror base
installing
position
adjustment
(3)
Vertical (main scanning
direction) image distortion
adjustment
Winding pulley
position
adjustment
(4)
Horizontal (sub scanning
direction) image distortion
adjustment
F rail height
adjustment
(5)
Main scanning direction
magnification ratio adjustment
CCD unit
position
adjustment
(6)
Main scanning direction
magnification ratio adjustment
SIM48-1
Sub scanning direction
magnification ratio adjustment
SIM48-1
*
Including the adjustment with
SPF
(7)
Shading plate correction value
setting
SIM46-17
Section
Adjustment item
Adjustment
procedure
C. Scanner
(8)
Scanning image position
adjustment
SIM50-2
*
Including the adjustment with
SPF
(9)
Original off-center adjustment
SIM50-12
*
Including the adjustment with
SPF,RADF
D. Copy density
adjustment
(1)
Copy mode
SIM 46-2/46-3
(SIM46-5/6/7/9
/10/11)
E. Paper feed
(1)
Manual paper feed size
detection level adjustment
SIM40-2
(2)
Paper size setting
F. Paper transport
(1)
Separation pawl operation
timing adjustment
SIM51-1
(2)
Paper resist pressure
adjustment
SIM51-2
G. Others
(1)
Original size sensor detection
level adjustment
SIM41-2
(2)
Original size sensor detection
level adjustment
SIM41-1
(3)
Waste toner full detection level
adjustment
(4)
Touch panel adjustment
SIM65-1
(5)
Key touch sound volume
adjustment
Sound volume
adjustment
H. SPF
(1)
Hinge height check and
adjustment
Table glass
clearance
adjustment
(2)
Open/close sensor position
adjustment
SIM 2-02
I. RADF (AR-RF1)
(When the RADF is
installed)
(1)
Document lead edge stop
position adjustment
SIM 53-1
(2)
Resist/timing/paper exit sensor
adjustment
SIM 53-2
(3)
Test mode with DIP switch
J. RADF (AR-RF2)
(When the RADF is
installed)
(1)
Document lead edge stop
position adjustment
SIM 53-1
(2)
Resist/timing/paper exit sensor
adjustment
SIM 53-2
(3)
Test mode with DIP switch
AR-405
7 – 1
1/21/1999
2. Copier adjustment
A. Process section 
(1) Developing doctor gap adjustment
1) Remove the screw and the connector which connect the toner
hopper and the developing unit, and separate them. 
2) Loosen the DV doctor fixing screw A.
3) Insert a thickness gauge (0.6mm) into the clearance of 40mm 
70mm from the DV doctor edge.
4) Press the DV doctor in the arrow direction and tighten the DV
doctor fixing screw. (Perform the same procedure for the front and
the rear frame.)
5) Check that the clearance (2 positions) at 40mm 
 70mm from the
both ends is 0.6 
±
 0.03mm. 
*
When inserting a thickness gauge, be careful not to scratch the
DV doctor and the MG roller. 
(2) MG roller main pole position adjustment
1) Remove the screw and the connector which connect the toner
hopper and the developing unit, and separate them. Put the
developing unit on a flat floor. 
2) Tie a needle or pin on a string. 
3) Hold the string and put the needle horizontally and move it toward
the MG roller. (Do not use a clip which is too big to have a correct
position since the MG roller diameter is small.)
4) With the needle tip at 2 
 3 mm apart  from  the MG roller surface,
mark the point on the surface which is on the extended line of the
needle tip. 
5) Measure the distance between the marking position and surface P
of the developing unit and check that it is 17mm.
If the distance is not as specified above, loosen the fixing screw A
of the main pole adjustment plate, and move the adjustment plate
to adjust. 
30mm
40mm
40mm
30mm
A
17.0mm
2~3mm
P
2~3mm
17.0mm
AR-405
1/21/1999
7 – 2
(3) Developing bias voltage adjustment
1) Set the digital multi-meter range to the DCV range. 
2) Put the test probes between the DV bias output check pin (CN2-1
pin) of the high voltage unit and the chassis (GND).
3) Execute SIM 8-1.
The DV bias can be measured without installing the OPC drum
and the developing unit. 
4) When the output voltage is within the adjustment range, change
the displayed value and adjust. (1 step: about 1 V)
Adjustment range
Developing negative bias voltage (Auto)
–500 
±
5V
Developing negative bias voltage
(Character)
–500 
±
5V
Developing negative bias voltage
(Character, Photo)
–500 
±
5V
Developing negative bias voltage (Photo)
–500 
±
5V
Developing negative bias voltage (FAX)
–500 
±
5V
Developing bias (Printer)
–500 
±
5V
Developing positive bias voltage
+150 
±
5V
(The value and the output voltage may not coincide.)
(4) Main charger grid voltage adjustment
1) Install the DV unit, the drum holder unit, and the charger units to
the copier. 
2) Turn on the main switch, and execute SIM 8-2 to check the grid
voltage set value. 
(Measurement at the high voltage PWB check point)
3) Remove the rear cabinet. 
4) Connect the digital multi-meter to the grid voltage output check pin
(CN2-5 pin).
5) Set the digital multi-meter range to the DCV range.
(Use a digital multi-meter which allows measurement up to
DC1000 V.)
6) Manually turn on the door switch. 
7) Turn on the main switch, and execute SIM 8-2 to check. 
8) If the output voltage is not in the specified range, change the
displayed value and adjust. (1 step: about 1V)
Adjustment range
AR-2XX/3XX 
series
AR-405
Grid voltage (Auto)
–642 
±
5V
–602 
±
5V
Grid voltage (Character)
–642 
±
5V
–602 
±
5V
Grid voltage (Character, Photo)
–642 
±
5V
–602 
±
5V
Grid voltage (Photo)
–642 
±
5V
–602 
±
5V
Grid voltage (Printer)
–642 
±
5V
–602 
±
5V
Grid voltage (FAX)
–642 
±
5V
–602 
±
5V
(The value and the output may not coincide.)
AR-405
7 – 3
1/21/1999
Page of 18
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