Sharp AL-1566 (serv.man17) Service Manual ▷ View online
AL-1556/1566 OPERATIONAL DESCRIPTIONS 7 - 9
C. Back copy
Document transport:
By switchback operation, the document is sent through the PS roller to
the exposure section, where the back of the document is exposed.
the exposure section, where the back of the document is exposed.
• It is sent to the document exit section by the transport roller and the
paper exit roller.
• R-SPF gate solenoid ON. The document is sent to the intermediate
tray, (but not discharged completely.)
• It is stopped once and switchback operation is performed.
• It is sent through the PS roller and the exposure section (without
exposure operation) to the document exit section.
• R-SPF gate solenoid OFF
• The document is discharged to the document exit tray.
Paper transport:
Switchback operation is performed.
• The paper is sent through the upper side of the gate section and the
duplex transport section, and the PS roller, and the images on the
back are transferred.
• It is sent through the fusing section and discharged to the paper exit
tray.
Switchback operation is made after back copying in order to discharge
documents according to the setting.
documents according to the setting.
Set document Documents after discharge,
There are following job modes as well as D-D mode.
S - S (Simplex to Simplex)
S - D (Simplex to Duplex),
Rotation copy mode (The back images are rotated 180°C.)
S - D (Simplex to Duplex), Copy mode without rotation
D - S (Duplex to Simplex)
Rotation copy mode:
The front and the back are in upside down each other.
Copy mode without rotation:
The front and the back are not in upside down.
9. Shifter
Shift width: 2.5cm
The offset function by the shifter is turned ON/OFF by the user pro-
gram.
gram.
According to the setting, offset operation is performed for every job.
(Default: ON)
(Default: ON)
1
with empty feed
4
without empty feed
3
2
3
4
3
2
1
4
1
2
AL-1556/1566 DISASSEMBLY AND ASSEMBLY 8 - 1
[8] DISASSEMBLY AND ASSEMBLY
The disassembly and assembly procedures are described for the fol-
lowing sections:
lowing sections:
1.
High voltage section
2.
Operation panel section
3.
Optical section
4.
Fusing section
5.
Tray paper feed/transport section
6.
Manual paper feed section
7.
Rear frame section
8.
Power section
9.
Duplex motor section
10. Reverse roller section
11. RSPF section
1. High voltage section
A. List
B. Disassembly procedure
1) Press the side cover open/close button and open the side cover.
2) Push up the lock pawls (2 positions) of the side cover, and remove
the transfer charger.
C. Assembly procedure
For assembly, reverse the disassembly procedure.
D. Charger wire cleaning
1) Remove the charger cleaner from the manual paper feed unit.
Before disassembly, be sure to disconnect the power cord for
safety.
1. Do not disconnect or connect the connector and the har-
safety.
1. Do not disconnect or connect the connector and the har-
ness during the machine is powered. Especially be careful
not to disconnect or connect the harness between the MCU
PWB and the LSU (MCU PWB: CN20) during the machine is
powered. (If it is disconnected or connected during the
machine is powered, the IC inside the LSU will be
destroyed.)
not to disconnect or connect the harness between the MCU
PWB and the LSU (MCU PWB: CN20) during the machine is
powered. (If it is disconnected or connected during the
machine is powered, the IC inside the LSU will be
destroyed.)
2. To disconnect the harness after turning on the power, be
sure to turn off the power and wait for at least 10 sec before
disconnection. (Note that a voltage still remains immedi-
ately after turning off the power.)
disconnection. (Note that a voltage still remains immedi-
ately after turning off the power.)
No.
Part name Ref.
1
Transfer charger unit
2
Charger wire
1)
2)
2)
1)
1)
Lock pawl rear
Lock pawl rear
Transfer
charger
charger
1)
AL-1556/1566 DISASSEMBLY AND ASSEMBLY 8 - 2
2) Set the charger cleaner to the transfer unit, and move it recipro-
cally a few times in the direction of the arrow shown in the figure
below.
below.
E. Charger wire replacement
1) Remove the TC cover and remove the screw.
2) Remove the spring and remove the charger wire.
3) Install a new charger wire by reversing the procedures (1) and (2).
At that time, be careful of the following items.
• The rest of the charger wire must be within 1.5mm. Refer to Fig.1
• The spring hook section (charger wire winding section) must be in
the range of the projection section.
• Be careful not to twist the charger wire.
2. Operation panel section
A. List
B. Disassembly procedure
1) Open the side door, and Open the front cover.
2) Remove the screws (4 pcs.), the harness, and the operation panel
unit.
1)
2)
3)
4)
1mm
1.5mm
Fig.1
1)
1)
2)
3)
Charger wire
Protrusion
No.
Part name Ref.
1
Operation panel unit
2
Operation PWB
1)
2)
1)
1)
1)
1)
2)
3)
AL-1556/1566 DISASSEMBLY AND ASSEMBLY 8 - 3
3) Remove four screws, and remove the operation cabinet.
4) Remove four screws, and remove the operation PWB.
C. Assembly procedure
For assembly, reverse the disassembly procedure
3. Optical section
A. List
B. Disassembly procedure
1) Remove four screws, and remove the rear cabinet and the rear
cabinet cover.
2) Remove the connector and the clamp, and remove the RSPF unit.
3) Remove the four screws, remove the operation unit, and discon-
nect the connector.
4) Remove the right cabinet.
5) Remove the left cabinet.
6) Remove the screw, and remove the rear cover.
7) Remove the table glass.
NO.
Part name Ref.
1
Copy lamp unit
2
Copy lamp
3
Lens unit
1)
1)
1)
4)
1)
3)
3)
2)
Note that there are 9 pawls
5)
6)
6)
7)
1)
1)
1)
1)
2)
2)
4)
1)
3)
2)
1)
1)
2)
4)
5)
6)
7)
8)
1)
1)
3)
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