Sharp AR-P350 / AR-P450 (serv.man8) Service Manual ▷ View online
AR-P350 MACHINE OPERATION-6
A. Applicable plain paper
For satisfactory results, plain paper must conform to the following requirement
B. Applicable special paper
For satisfactory results, special paper must conform to the following requirements.
Paper in AB system
Paper in inch system
A5 to A3
5-1/2 x 8-1/2 to 11 x 17
Plain paper
16 to 28 lbs. or 60 to 105g/m²
Recycled, colored, pre-punched, pre-printed and letterhead papers must conform to the same conditions as above.
Type
Remarks
Special paper
Thick paper
•For 5-1/2 x 8-1/2 to 8-1/2 x 11 or A5 to A4 sizes, thick paper ranging from 16 to 34 lbs.
or 60 to 128g/m² can be used.
•For sizes larger than 8-1/2 x 11 or A4, thick paper ranging from 16 to 28 lbs. or 60 to 105g/m² can be
used.
•Other thick papers Index stock (65 lbs. or 176g/m²) can be used. Cover stock (110 lbs. or 200 to 205g/m²)
can be used but only for 8-1/2 x 11, A4 or smaller paper in the portrait orientation.
Transparency film, labels,
and tracing paper
and tracing paper
•Use SHARP recommended paper. Do not use labels other than SHARP recommended labels.
Doing so may leave adhesive residue in the printer, causing paper misfeeds, smudges on prints or other
machine trouble.
Postcards
•Japanese official postcards can be used.
Envelopes
•Applicable standard envelopes: COM-10, Monarch, DL, C5, ISO B5
•Envelopes can only be fed from the multi-purpose drawer.
•Envelopes can only be fed from the multi-purpose drawer.
Applicable paper stock weight for envelopes is 20 to 23 lbs. or 75 to 90g/m².
AR-P350 ADJUSTMENTS-1
[9] ADJUSTMENTS
1. Process section
A. Doctor gap adjustment
This adjustment is performed in the following cases:
•When developer is scattered.
•When an uneven image is produced.
1) Remove the developer cartridge and the developing unit from the
machine.
2) Remove the DV cover and the developer from the developing unit.
3) Remove the DVR cover, the DVF handle, the idle correction plate
3) Remove the DVR cover, the DVF handle, the idle correction plate
assembly, and the HG gear 22T, insert a thickness gauge (0.46mm)
as shown in the figure below, and check that the clearance is within
the specified range.
the specified range.
If the clearance is not within the specified range, adjust the doctor gap in
the following procedures.
4) Loosen the developing doctor fixing screw A.
4) Loosen the developing doctor fixing screw A.
5) Insert the thickness gauge (0.46mm) again as shown in the figure
below.
6) Push the developing doctor in the arrow direction and tighten the
fixing screw.
7) Check the developing doctor gap. If the clearance is within the
specified range, fix the screw with screw lock.
8) After completion of the job, apply screw lock.
<Adjustment specification>
B. MG roller main pole position adjustment
This adjustment is performed in the following cases:
•When developer is scattered.
•When an uneven image is produced.
1) Remove the developer cartridge and the developing unit from the
machine.
2) Remove the DV cover and the developer from the developing unit.
3) Remove the DVF handle and put the developing unit on a flat
3) Remove the DVF handle and put the developing unit on a flat
surface.
4) Bind a string to a needle.
5) Hold the string and move the needle toward the MG roller.
5) Hold the string and move the needle toward the MG roller.
(Since the MG roller diameter is small, use of a clip cannot make an
accurate adjustment.)
6) With the needle tip 2 - 3 mm apart from the MG roller surface, mark
the point on the MG roller in the elongated line of the needle.
(Keep the needle and the MG roller apart from each other.)
7) Measure the distance from the marking position to the P surface of
the developing unit, and check that the distance is within the
specified range.
If the distance is not within the specified range, perform the adjustment in
the following procedures.
the following procedures.
8) Loosen the fixing screw of the main pole fixing plate.
Contents of adjustment
1
Process
section
A
Doctor gap adjustment
B
MG roller main pole position adjustment
C
High voltage output check and adjustment
2
Engine
A
LSU right-angle adjustment
B
Print magnification ratio adjustment
C
Print off-center adjustment
D
Self print lead edge adjustment
E
Void area adjustment
F
Resist quantity adjustment
G
Option paper feed tray paper guide adjustment
H
Option manual feed section
paper guide position adjustment
paper guide position adjustment
20 50mm
20 50mm
Specification
Ambient
temperature
Both sides
Position at 20 - 50mm
0.45±0.03mm
5 - 30°C
AR-P350 ADJUSTMENTS-2
9) Move the adjustment plate in the arrow direction and adjust.
<Adjustment specification>
C. High voltage output check and adjustment
1) While pressing the MENU key and the OK key, turn on the power
switch.
2) The operation panel displays "PCU DIAG MODE."
*
After releasing your fingers from the keys, do not touch any key
for about 8 sec.
3) Press the MENU key several times until "HV TEST MC/GRID" is
displayed.
4) Select a load to be outputted with [
] and [
] keys.
5) Press the OK key to determine the selected load.
6) Apply the high voltage tester across the measuring pin according to
6) Apply the high voltage tester across the measuring pin according to
the selected load and the frame.
7) The set value is displayed on the LCD. Check it and adjust so that it is in the specified range.
The output mode is as shown in the table below.
* Varies with time by the process control process.
2. Engine
A. LSU right-angle adjustment
This adjustment is required in the following cases:
•When the LSU is replaced.
•When a distortion is produced in print.
(Check with self print pattern "71".)
After completion of this adjustment, the following adjustments should be
performed.
•Print magnification ratio adjustment
•Print off-center adjustment
•Print off-center adjustment
•Void area adjustment
Specification
Marking position
Measure from
the P surface above.
the P surface above.
54.2mm
54.2mm
LCD display
Spec
Measuring pin
MC/GRID
AE
MC grid
AE mode
-650V±5V*
CN2-7
CHR
Text mode
-650V±5V*
MIX
Text Photo mode
-650V±5V*
PHT
Photo mode
-650V±5V*
PRT
Printer mode
-650V±5V*
FAX
FX mode
-650V±5V*
THV+
F
Transfer voltage
Front side
CN2-5
B
Rear side
BS
AE
Developing bias
AE mode
-500V±5V*
CN2-1
CHR
Text mode
-500V±5V*
MIX
Text Photo mode
-500V±5V*
PHT
Photo mode
-500V±5V*
PRT
Printer mode
-500V±5V*
FAX
FX mode
-500V±5V*
PLUS
Positive bias
+500V±5V*
SHV
F
Separation voltage
Front side
1.25V±0.1V
CN2-3
R
Rear side
1.25V±0.1V
THV
Transfer voltage discharge
-800V±10V*
CN2-5
AR-P350 ADJUSTMENTS-3
1) Hold and push the [MENU] key and the [OK] key, and turn on the
power. ("PCU DIAG MODE ***" is displayed.)
*
Do not touch the keys for about 8sec after releasing fingers from
the above keys.
2) Push the [MENU] key several times until "TEST PRINT" is displayed,
and push the [OK] key to enter the test print mode.
3) Push the [MENU] key several times until "PRITN PATTERN" is
displayed, and set "71".
4) Push the [MENU] key several times until "CASSETTE" is displayed,
and check with [
] key that the paper for tray 1 is properly set for the
destination.
*
AB series: "A4" is displayed
*
Inch series: LETTER is displayed.
5) Push the [OK] key to make self-print.
6) Check the output print.
7) Loosen two fixing screws of the LSU unit
(M4 screws which are fixing the LSU and the top plate).
8) Turn the adjustment screw on the upper side (on the back of the
printer operation panel) clockwise or counterclockwise to adjust the
height of the LSU front side.
height of the LSU front side.
9) After completion of the adjustment, tighten two fixing screws of the
LSU unit.
10) Print again in the grid pattern and check the print.
11) Repeat procedures 7) to 10) until the specification is satisfied.
<Specification>
B. Print off-center adjustment
This adjustment is performed in the following cases:
•When the center of print is misaligned.
(Check with the self print pattern "1".)
•When the LSU is replaced.
•When the option paper feed unit or the automatic duplex unit is
installed or replaced.
Before executing this adjustment, the following adjustments must have
been completed.
•LSU right-angle adjustment
•Print magnification ratio adjustment
•Print magnification ratio adjustment
After completion of this adjustment, the following adjustment must be
performed.
• Void area adjustment
1) Hold and push the [MENU] key and the [OK] key, turn on the power.
("PCU DIAG MODE ***" is displayed.)
*
*
Do not touch the keys for about 8sec after releasing fingers from
the above keys.
2) Push the [MENU] key several times until "TEST PRINT" is displayed,
and push the [OK] key to enter the test print mode.
3) Make a print with "1".
4) Push the [MENU] key several times until T1 OFF CENTER ADJ is
displayed, and push the [OK] key.
5) Check the print and use [
] or [
] key to adjust the value of T1
OFF CENTER ADJ so that the off-center value is within the specified
range.
range.
6) If the option paper feed unit or the automatic duplex unit is installed,
make an adjustment for each unit.
*
*
When using the duplex unit, set DUPLEX to USE.
Measuring
point
Specification
Set value
Print distortion
adjustment
adjustment
Self print
pattern 71
pattern 71
= 90° ± 0.13°
changes about
0.25 degrees for 1 scale
of adjustment.
of adjustment.
a b
Print lead edge
Measurement
reference
Specification
Set value
Standard tray
self print off-
center
(T1 OFF
CENTER ADJ)
self print off-
center
(T1 OFF
CENTER ADJ)
Output
pattern 1
Center line
pattern 1
Center line
0 ±1.5mm
Shift of
0.1mm for
set value 1.
0.1mm for
set value 1.
No. 2 tray self
print off-center
(T2 OFF
CENTER ADJ)
print off-center
(T2 OFF
CENTER ADJ)
When the
option
paper feed
unit is
installed.
option
paper feed
unit is
installed.
No. 3 tray self
print off-center
(T3 OFF
CENTER ADJ)
print off-center
(T3 OFF
CENTER ADJ)
No. 4 tray self
print off-center
(T4 OFF
CENTER ADJ)
print off-center
(T4 OFF
CENTER ADJ)
Manual feed
tray self print
off-center
(MFT OFF
CENTER ADJ)
tray self print
off-center
(MFT OFF
CENTER ADJ)
0 ±1.5mm
When the
option
automatic
duplex unit
is installed.
option
automatic
duplex unit
is installed.
ADU Self print
off-center
(ADU OFF
CENTER ADJ)
off-center
(ADU OFF
CENTER ADJ)
a
b
Print lead edge
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