Sharp AR-M550 (serv.man11) Service Manual ▷ View online
AR-M550/M620 DETAILS OF EACH SECTION 6 - 7
Code
Signal
name
Name
Function/Operation
Type
Model
Note
MPED
MPED
Manual feed paper empty
detector
detector
Manual paper feed tray paper empty
detection
detection
Transmission type
Manual paper feed unit
MPFD1
MPFD1
Manual feed paper pass
detector 1
detector 1
Manual tray paper pass detection
Transmission type
Paper transport system
sensor
sensor
MPFPWS MPFPWS Manual feed paper width
detector
Manual feed paper width detection
Volume resistor
Analog detector
MPLD1
MPLD1
Manual feed paper length
detector 1
detector 1
Manual paper feed tray paper length
detection (Paper feed side)
detection (Paper feed side)
Transmission type
Manual paper feed unit
MPLD2
MPLD2
Manual feed paper length
detector 2
detector 2
Manual paper feed tray paper length
detection (Outside)
detection (Outside)
Transmission type
Manual paper feed unit
MTOP1
MTOP1
Manual tray pull-out position
detector 1
detector 1
Manual paper feed tray pull-out position
detection (Storing position)
detection (Storing position)
Contact type
Manual paper feed unit
MTOP2
MTOP2
Manual tray pull-out position
detector 2
detector 2
Manual paper feed tray pull-out position
detection (Pull-out position)
detection (Pull-out position)
Contact type
Manual paper feed unit
DSW-R
DSW-R
Manual feed unit open/close
detector
detector
Manual paper feed unit open/close
detection, main charger power/
developing bias power line open/close
detection, main charger power/
developing bias power line open/close
Micro switch
MPFC
MPFC
Paper feed clutch (Manual
paper feed)
paper feed)
Manual paper feed section paper feed
roller ON/OFF control
roller ON/OFF control
Electromagnetic
clutch
clutch
MFPUS
MFPUS
Paper pickup solenoid
(Manual paper feed)
(Manual paper feed)
Presses the paper pickup roller onto
paper.
paper.
Electromagnetic
solenoid
solenoid
MPFGS
MPFGS
Manual paper feed gate
solenoid
solenoid
Manual feed gate solenoid open/close
control
control
Electromagnetic
solenoid
solenoid
No.
Name
Function
1
Separation roller (Manual paper feed tray)
Separates paper to prevent against double feed.
2
Paper feed roller (Manual paper feed tray)
Feeds paper to the paper transport section.
3
Paper pickup roller (Manual paper feed tray)
Sends paper to the paper feed roller.
4
Torque limiter
A fixed level of resistance is applied to the paper separation roller to prevent against double
feed.
feed.
AR-M550/M620 DETAILS OF EACH SECTION 6 - 8
B. Maintenance and parts replacement
(1) Maintenance list
✕
: Check (Clean, replace, or adjust as necessary.)
❍
: Clean
▲
: Replace
∆
: Adjust
✩
: Lubricate
❏
: Shift position
(2) Maintenance and parts replacement
(List of Replacement Parts)
AR-M550U/M550N (PM: 250K)
When
calling
250K 500K 750K 1000K 1250K 1500K 1750K 2000K
Remark
AR-620U/M620N (PM: 300k)
300K 600K 900K 1200K 1500K 1800K 2100K 2400K
Unit name No.
Part name
Multi manual
paper feed
paper feed
1
Pickup roller
✕
❍
❍
❍
❍
❍
❍
❍
❍
(Note 1)
2
Paper feed roller
✕
❍
❍
❍
❍
❍
❍
❍
❍
(Note 1)
3
Separation roller
✕
❍
❍
❍
❍
❍
❍
❍
❍
(Note 1)
4
Torque limiter
✕
✕
✕
✕
✕
✕
✕
✕
✕
(Note 1)
5
Shaft (Conduction grease)
✕
✩
✩
✩
✩
✩
✩
✩
✩
UKOG-0012QSZZ
(Note 1)
Replacement reference: For replacement, refer to each paper feed port counter value.
Manual paper feed : 100K or 1 year
Torque limiter
Torque limiter
: 800K (However, 400K for manual paper feed section)
3
2
1
4
5
5
5
5
No.
Unit
Parts
a
Multi manual paper
feed tray unit
feed tray unit
1
Manual paper feed unit open/
close switch
close switch
2
Manual feed empty detector
3
Pickup roller
✕❍
4
Paper feed roller
✕❍
5
Separation roller
✕❍
6
Torque limiter
✕
7
Manual feed gate solenoid
8
Manual feed paper pass
detector 1
detector 1
9
Paper feed clutch
10
Paper pickup solenoid
11
Manual feed paper width size
detection PWB
detection PWB
12
Manual feed paper length
detector 1
detector 1
13
Manual feed paper length
detector 2
detector 2
14
Manual tray pull-out position
detector 1
detector 1
15
Manual tray pull-out position
detector 2
detector 2
a-1
a-2
a-7
a-8
a-9
a-10
a-11
a-12
a-13
a-14
a-15
a-6
a
a-3
a-4
a-5
AR-M550/M620 DETAILS OF EACH SECTION 6 - 9
a. Multi manual paper feed tray unit
1) Pull out the multi manual paper feed tray unit.
2) Remove the multi manual paper feed tray unit from the right and
left accurides.
a-1. Manual paper feed unit open/close switch
1) Pull out the multi manual paper feed tray unit. (See “a. Multi man-
ual paper feed tray unit”)
2) Remove the manual feed upper cover.
3) Remove the manual feed front cover.
4) Remove the manual paper feed unit open/close switch.
a-2. Manual feed empty detector
1) Pull out the multi manual paper feed tray unit. (See “a. Multi man-
ual paper feed tray unit”)
2) Remove the manual feed upper cover. (See “a-1. Manual paper
feed unit open/close switch”)
3) Remove the pickup cover.
4) Remove the actuator unit.
5) Remove the manual feed empty detector.
AR-M550/M620 DETAILS OF EACH SECTION 6 - 10
a-3. Pickup roller
a-4. Paper feed roller
a-5. Separation roller
1) Pull out the multi manual paper feed tray unit. (See “a. Multi man-
ual paper feed tray unit”)
2) Remove the actuator unit. (See “a-3. Pickup roller”)
3) Unhook the claw to remove the pickup roller.
4) Unhook the claw to remove the paper feed roller.
5) Remove the separation roller cover.
6) Remove the separation roller.
a-6. Torque limiter
1) Pull out the multi paper feed tray unit. (See “a. Multi manual paper
feed tray unit”)
2) Remove the bottom cover.
3) Remove the separation roller.
4) Remove the separation roller shaft, and remove the torque limiter.
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