Sharp AR-C170 (serv.man24) Service Manual ▷ View online
AR-C170M DESCRIPTIONS OF EACH SECTION 7 - 33
d. Paper resist section
The resist roller controls the relative position of the transported
paper and the transfer image.
paper and the transfer image.
The resist roller is driven by the resist roller motor.
The relative position of paper and the transfer image is determined
by the ON timing of the resist roller motor.
by the ON timing of the resist roller motor.
e. Others
∗
The paper transport section is provided with two paper detec-
tors, which perform the following functions:
tors, which perform the following functions:
1) Paper jam detection
2) Output of the reference signal for the operating timing of each
load
B. Disassembly/assembly/maintenance
(1) Paper feed/transport sections maintenance target parts
✕
: Check (Clean, replace, or adjust as necessary.)
❍
: Clean
▲
: Replace
∆
: Adjust
✩
: Lubricate
❏
: Shift position
Upper resist roller
Lower resist roller
PS motor
Unit name
No.
Part name
When
calling
50K
100K
150K
200K
250K
300K
350K
400K
Remark
Paper feed
section
section
1
Paper feed rollers in
the cassette section
the cassette section
❍
❍
✕
❍
✕
❍
✕
❍
✕
Replace at the specified
count at each paper feed
port or within 2 years.
count at each paper feed
port or within 2 years.
2
Torque limiter
✕
✕
✕
✕
✕
3
Paper feed rollers in
the manual paper feed
section
the manual paper feed
section
❍
✕
✕
✕
✕
✕
✕
✕
✕
Replace at the specified
count at each paper feed
port or within 2 years.
count at each paper feed
port or within 2 years.
4
Torque limiter
✕
✕
✕
✕
✕
✕
✕
✕
✕
Transport
section
section
5
Transport rollers
❍
❍
❍
❍
❍
❍
❍
❍
❍
6
Transport paper guide
❍
❍
❍
❍
❍
❍
❍
❍
❍
1
2
1
3
3
4
4
3
4
3
1
2
5
5
5
5
6
6
6
6
AR-C170M DESCRIPTIONS OF EACH SECTION 7 - 34
(2) Maintenance parts and major parts replacement
a. Cassette paper feed
<1> Pickup roller
1) Remove the cassette.
2) Disengage the pawl, and remove the pickup roller.
Note: Do not remove the transfer belt unit.
<2> Paper feed roller, torque limiter
1) Remove the cassette.
2) Disengage the pawl, and remove the paper feed roller.
<3> Paper separation roller, torque limiter
1) Remove the cassette.
2) Disengage the pawl, and remove the paper separation roller.
<4> Cassette paper feed unit
1) Open the front cabinet, and remove the drum unit.
2) Remove the developing unit.
AR-C170M DESCRIPTIONS OF EACH SECTION 7 - 35
3) Remove the front cabinet and the front frame cover.
4) Remove the multi manual paper feed unit.
5) Remove the connection right cabinet, the rear cabinet, and the
rear right cabinet.
6) Remove the screw and the paper feed unit. Remove the con-
nector.
∗
When assembling, fit the positioning pin A with section C.
<5> Paper feed drive motor
1) Remove the screw, the rear cabinet, the rear right cabinet, and
the connection right cabinet B.
2) Remove the screw, and remove the paper feed drive motor.
<6> Paper feed drive unit
1) Remove the harness and the screw, and remove the paper
feed drive unit.
b. Multi manual paper feed
<1> Pickup roller
1) Open the arm cover (A). Disengage the pawl, and remove the
pickup roller (B).
<2> Paper feed roller
1) Open the arm cover (A), open the auxiliary PG (B), and
remove the paper feed roller (C).
<3> Paper separation roller
1) Open the vertical transport guide.
2) Open the maintenance cover (A) from the bottom of the multi
paper feed unit. Disengage the pawl and remove the paper
feed separation roller (B).
feed separation roller (B).
A
C
A
B
A
B
C
A
B
AR-C170M DESCRIPTIONS OF EACH SECTION 7 - 36
<4> Multi manual paper feed unit
1) Remove the screw and the harness, and remove the multi
paper feed unit.
<5> Paper feed clutch
1) Remove the screw and the cover (A). Remove the connector
and the E-ring, and remove the paper feed clutch (B).
<6> Transport roller
1) Remove the bottom lid (A), remove the connector and the
screw, and remove the cover (B).
∗
When assembling, fit the cover projection with the spring.
2) Remove the screw, and remove (A) and (B).
∗
When assembling, first attach (A), then attach (C) and (D).
3) Remove the screw and the E-ring, and remove the angle (A)
and the gear.
4) Remove the screw, and remove (A) and the manual upper unit
(B).
A
B
A
B
C
D
C
D
A
B
E
A
A
B
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