Sharp AR-M550 (serv.man11) Service Manual ▷ View online
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.
AR-M550/M620 DETAILS OF EACH SECTION 6 - 29
6) Remove the spring, and remove the paper width mounting base.
Remove the width detection arm and remove the paper feed tray
paper width detector.
paper width detector.
b-4. Dry heater
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. (See “b-3. Paper feed tray paper width
detector” in this section)
4) Disconnect the connector, and remove the H cassette rail L unit.
5) Remove the dry heater unit, and remove the dry heater.
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