Sharp AR-M550 (serv.man11) Service Manual ▷ View online
AR-M550/M620 DETAILS OF EACH SECTION 6 - 25
a. Paper feed tray units 3 and 4
1) Open the bottom left cabinet.
2) Remove the connector cover.
3) Disconnect the connectors.
4) Remove the paper feed tray paper feed units 3 and 4 from the
lower shelf.
a-1. Pickup roller
1) Gently pull out the paper feed tray until it stops.
2) Lifting up the paper feed tray unit slightly, remove it at an angle
from the right side.
3) Remove the paper feed tray units 3 and 4. (See “a. Paper feed tray
units 3 and 4”)
4) Remove the paper guide.
5) Unhook the claws to remove the pickup roller.
AR-M550/M620 DETAILS OF EACH SECTION 6 - 26
a-2. Paper feed roller
1) Remove the paper feed tray units 3 and 4. (See “a. Paper feed tray
units 3 and 4”)
2) Remove the paper guide. (See “a-1. Pickup roller”)
3) Release the pawl, and remove the paper feed roller.
a-3. Separation roller
1) Remove the paper feed tray units 3 and 4. (See “a. Paper feed tray
units 3 and 4”)
2) Remove the paper guide. (See “a-1. Pickup roller”)
3) Release the pawl, and remove the separation roller.
a-4. Torque limiter
1) Remove the paper feed tray units 3 and 4. (See “a. Paper feed tray
units 3 and 4”)
2) Remove the E-ring, the gear and the pin.
3) Remove the E-ring and the bearing.
4) Remove the separation roller unit.
5) Remove the E-ring, and one-way clutch.
6) Remove the E-ring and shift the separation roller shaft.
7) Remove the shaft unit.
8) Remove the torque limiter.
a-5. Paper pickup solenoid
1) Remove the paper feed tray 3/4. (See “a. Paper feed tray units 3
and 4”)
2) Remove the cover.
AR-M550/M620 DETAILS OF EACH SECTION 6 - 27
3) Remove the solenoid unit.
4) Remove the paper pickup solenoid.
a-6. Paper feed tray upper limit detector
a-7. Paper feed tray empty detector
1) Remove the paper feed tray 3/4. (See “a. Paper feed tray units 3
and 4”)
2) Remove the cover. (See “a-5. Paper pickup solenoid”)
3) Remove the paper feed tray upper detector unit (a) and the paper
feed tray empty detector unit (b).
4) Remove the detector.
a-8. Transport roller 8, 10
1) Remove the paper feed tray 3/4. (See “a. Paper feed tray units 3
and 4”)
2) Remove the cover.(See “a-5. Paper pickup solenoid”)
3) Remove the E-ring and remove the pulley bearing.
4) Remove the transport roller 8, 11.
a-9. Transport roller 5, 7
1) Remove the paper feed tray 3/4. (See “a. Paper feed tray units 3
and 4”)
2) Remove the cover. (See “a-5. Paper pickup solenoid”)
3) Remove the E-ring and remove the pulley bearing.
4) Remove the transport roller 5, 7.
a
b
AR-M550/M620 DETAILS OF EACH SECTION 6 - 28
a-10. Paper pass detector
1) Remove the paper feed tray 3/4.
2) Remove the cover. (See “a-5. Paper pickup solenoid”)
3) Remove the paper pass detector unit.
4) Remove the paper pass detector.
b-1. Paper size detection PWB
1) Remove the paper feed unit. (See “a-1. Pickup roller” in this sec-
tion)
2) Disconnect the connector, and remove the paper size detection
PWB unit.
3) Release the pawl, and remove the paper size detection PWB.
b-1. Paper remaining quantity detector
1) Remove the paper feed unit. (See “a-1. Pickup roller” in this sec-
tion)
2) Disconnect the connector, and remove the paper remaining quan-
tity detector unit.
3) Remove the paper remaining quantity detector cover. Remove the
paper remaining quantity detector.
b-3. Paper feed tray paper width detector
1) Remove the paper feed tray 3/4 unit lower. (See “a. Paper feed
tray units 3 and 4” in this section)
2) Remove the paper feed unit. (See “a-1. Pickup roller” in this sec-
tion)
3) Remove the rear cabinet.
4) Disconnect the connector, and remove the cassette rail L unit.
5) Release the pawl, and remove the width detection unit.
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