DOWNLOAD Sharp AL-1217 (serv.man17) Service Manual ↓ Size: 5.15 MB | Pages: 118 in PDF or view online for FREE

Model
AL-1217 (serv.man17)
Pages
118
Size
5.15 MB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / Complete service manual
File
al-1217-sm17.pdf
Date

Sharp AL-1217 (serv.man17) Service Manual ▷ View online

AL-1226  OPERATIONAL DESCRIPTIONS  7 - 6
(2) Manual multi paper feed operation
1) Before paper feed operation, the manual paper feed solenoid
(MPFS) is turned OFF as shown in the figure below.
2) When the PRINT button is pressed, the manual paper feed
solenoid (MPFS) turns on to disengage the manual paper feed
latch.
A from the manual paper feed clutch sleeve A, rotating the manual
paper feed roller and the manual take-up roller. At the same time,
the manual paper feed stopper opens and the manual take-up
roller is pressed to the surface of the paper to start paper feeding.
3) When pawl C of the manual paper feed clutch sleeve is engaged
with the manual feed latch, the manual feed stopper falls and the
manual take-up roller rises. At that time, the manual paper feed
roller is rotating.
4) The lead edge of the transported paper is pressed on the resist
roller by the transport roller. Then the paper is stopped temporarily
to allow synchronization with the lead edge of the image on the
OPC drum.
From this point, the operation is the same as the paper feed
operation from the tray. (Refer to A-5 - 8.)
5) The solenoid turns off to close the gate and return to the initial
state.
OF
MPFS
F
C
A
ON
MPFS
A
C
ON
MPFS
A
C
OF
MPFS
F
A
C
AL-1226  OPERATIONAL DESCRIPTIONS  7 - 7
(3) Conditions of occurrence of paper misfeed
a. When the power is turned on:
PPD or POD is ON when the power is turned on.
b. Copy operation
6. Process unit new drum detection 
mechanism
1) When the power is turned on, the detection gear 38T is rotated in
the arrow direction by the detection gear 20T to push the micro-
switch (process detection switch) installed to the machine sensor
cover, making a judgement as a new drum.
2) When the detection gear 38T turns one rotation, there is no gear
any more and it stops.
The latch section of the 38T gear is latched and fixed with the
projection of the process cover.
7. SPF section
A. Outline
The SPF (Single Path Feeder) is installed to the AL-1225 as a stan-
dard provision, and it automatically copies up to 30 sheets of docu-
ments of a same size. (Only one set of copies)
B. Document transport path and basic composition
a
PPD1 jam
PPD1 does not turn off within 4 sec after turning 
on the resist roller.
b
PPD2 jam
PPD2 is off immediately after turning on the 
resist roller.
PPD2 does not turn off within 1.2 sec after 
turning off the resist roller.
c
POD jam 
POD does not turn on within 2.9 sec after turning 
on the resist roller.
POD does not turn off within 1.5 sec - 2.7 sec 
after turning off PPD2.
Gear 20T
Process detection switch
Gear 38T
1
Pickup roller
2
Sheet of document for 
paper feed
3
Set detection ACT
4
Paper stopper
5
Document feed roller
6
Separation sheet
7
Paper entry sensor
8
PS roller D
9
Transport follower roller
10
Paper exit roller
11
Paper exit follower roller
12
Document tray
Gear notch
Gear pawl
Projection
Gear notch
Gear pawl
Projection
2
1
3
4
5
6
7
8
9
10
11
12
AL-1226  OPERATIONAL DESCRIPTIONS  7 - 8
C. Operational descriptions
D. Cases where a document jam is caused
1) When SPPD is ON (document remaining) when the power is
turned on.
2) When SPPD is not turned ON within about 1.5 sec (at 100% copy)
after starting the document feed operation.
3) When SPPD is not turned on within about 4.7 sec (at 100% copy)
after turning on SPPD.
4) When the SPF document jam release door or the OC cover is
opened during document transport (SPF motor rotating).
SPID ON
PSW ON
MIRM rotation
MM rotation
CPFS ON
SPFM rotation
SPUS ON
Document set
Document set sensor
Document feed unit lamp ON
PPD ON
RRC ON
SPPD ON
POD ON
Copy start
The scanner is shifted
to the exposure position.
(Copier side)
Main motor rotation
Paper feed
Synchronization
(Transfer)
(Fusing)
(Document exit)
Paper transport
(Exposure)
In the zooming mode, the magnification ratio in the sub 
scanning direction (paper transport direction) is adjusted
by changing the document transport speed.
(Paper exit)
SPF motor rotation
Document feed
Document transport sensor
Document transport
(SPF side)
Time chart (Tray feed)
752msec
625msec
756msec
PSW
MIRR M
SPF M
CL
SPUS
SPPD
SCANST
MAIN M
CPFS1
RRS
PPD1
PPD2
POD
AL-1226  DISASSEMBLY AND ASSEMBLY  8 - 1
[8] DISASSEMBLY AND ASSEMBLY
The disassembly and assembly procedures are described for the fol-
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.
SPF 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 harness
during the machine is powered. Especially be careful not to
disconnect or connect the harness between the MCU PWB
and the LSU (MCU PWB: CN119) 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 immediately
after turning off the power.)
No.
Part name Ref.
1
Transfer charger unit
2
Charger wire
1)
2)
2)
1)
1)
Transfer
charger
Lock pawl rear
Lock pawl front
1)
Page of 118
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