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ARDF DF3090 (D779)
ARDF DF3090 (D779)
ARDF DF3090 (D779)
1.1 REAR COVER
1. Open the left cover [A].
2. Open the original tray [B].
3. Rear cover [C] 
x 1, hook x 6)
Front Cover and Original Tray
1.2 FRONT COVER AND ORIGINAL TRAY
1. Open the left cover.
2. Rear cover 
page 1)
3. Front cover [A] 
x 1)
Keep the original tray open when you remove the front cover.
4. Original tray [B] 
x 1, 
x 1)
Original Feed Unit
ARDF DF3090 (D779)
ARDF DF3090 (D779)
ARDF DF3090 (D779)
1.3 ORIGINAL FEED UNIT
1. Open the left cover.
2. Original feed unit [A].
Pick-Up Roller
1.4 PICK-UP ROLLER
1. Open the left cover.
2. Original feed unit 
page 3)
3. Pick-up roller [A] 
x 1)
Feed Belt
ARDF DF3090 (D779)
ARDF DF3090 (D779)
ARDF DF3090 (D779)
1.5 FEED BELT
1. Open the left cover.
2. Original feed unit 
page 5)
3. Feed belt cover [A] (spring x 1)
When reassembling the feed belt cover, make sure that the projection [B] of the feed belt cover is on the guide plate rear [C].
4. Belt tension unit [D]
Feed Belt
5. Feed belt [E].
Separation Roller
ARDF DF3090 (D779)
ARDF DF3090 (D779)
ARDF DF3090 (D779)
1.6 SEPARATION ROLLER
1. Original Feed Unit 
page 3)
2. Separation roller cover [A].
3.
ARDF Drive Board and DF Position Sensor
1.7 ARDF DRIVE BOARD AND DF POSITION SENSOR
1. Rear cover 
page 1)
2. ARDF drive board [A] 
x 3, all 
s)
3. DF position sensor with bracket [B] 
x 1, 
x 1)
4. DF position sensor [C] (hook x 2)
Original Length Sensors and Original Sensor
ARDF DF3090 (D779)
ARDF DF3090 (D779)
ARDF DF3090 (D779)
1.8 ORIGINAL LENGTH SENSORS AND ORIGINAL SENSOR
1. Original Tray 
page 2 "Front Cover and Original Tray")
2. Tray cover [A] 
x 3)
3. Original sensor [B] 
x 1)
4. Original length sensors [C] 
x 1 each)
Original Set Sensor
1.9 ORIGINAL SET SENSOR
1. Open the left cover.
2. Original feed unit 
page 3)
3. Original tray 
page 2)
4. Original feed-in guide plate [A] 
x 3).
5. Feed guide [A]
6. Original turn guide plate [A] (hook x 1).
ARDF DF3090 (D779)
ARDF DF3090 (D779)
ARDF DF3090 (D779)
Original Set Sensor
7. Original set sensor bracket [A] 
x 1)
8. Original set sensor [A]
Original Size Sensors and Skew Correction Sensor
1.10 ORIGINAL SIZE SENSORS AND SKEW CORRECTION SENSOR
1. Open the left cover.
2. Original feed unit 
page 3)
3. Original tray 
page 2)
4. Original feed-in guide plate [A] 
x 3).
5. Feed guide [A]
6. Original turn guide plate [A] (hook x 1).
ARDF DF3090 (D779)
ARDF DF3090 (D779)
ARDF DF3090 (D779)
Original Size Sensors and Skew Correction Sensor
7. Original width sensors [A] 
x 1 each) and skew correction sensor [B] with bracket 
x 1, 
x 1)
Stamp Solenoid
1.11 STAMP SOLENOID
1. Rear cover 
page 1)
2. Stamp solenoid harness [A] 
x 1, 
x 1)
3. Open the ARDF.
4. Remove the platen sheet [A].
5. Stamp solenoid cover [A] 
x 1)
6. Stamp solenoid [A] 
x 1)
ARDF DF3090 (D779)
ARDF DF3090 (D779)
ARDF DF3090 (D779)
Stamp Solenoid
7. Pull out the harness [A].
Original Exit Sensor
1.12 ORIGINAL EXIT SENSOR
1. Open the left cover.
2. Original feed unit 
page 3)
3. Original tray 
page 2)
4. Original feed-in guide plate 
page 10)
5. The Original Exit Sensor is located in the ARDF mainframe [A].
6. Original exit sensor bracket [A]
7. Original exit sensor [A]
Registration Sensor
ARDF DF3090 (D779)
ARDF DF3090 (D779)
ARDF DF3090 (D779)
1.13 REGISTRATION SENSOR
1. Open the left cover.
2. Original feed unit 
page 3)
3. Original tray 
page 2)
4. Original feed-in guide plate 
page 10)
5. Registration sensor [A] 
x 1)
ARDF Cover Switch
1.14 ARDF COVER SWITCH
1. Rear cover 
page 1)
2. ARDF Cover Switch [A] 
x 2)
Feed Motor
ARDF DF3090 (D779)
ARDF DF3090 (D779)
ARDF DF3090 (D779)
1.15 FEED MOTOR
1. Rear cover 
page 1)
2. Feed motor harness [A] 
x 1)
3. Harness guide [A] 
x 5)
4. Feed motor with bracket [A] 
x 2, spring [B] x 1)
Feed Motor
5. Feed motor [A] 
x 2)
Pick-up Solenoid
ARDF DF3090 (D779)
ARDF DF3090 (D779)
ARDF DF3090 (D779)
1.16 PICK-UP SOLENOID
1. Rear cover 
page 1)
2. Harness guide 
page 19)
3. Pick-up solenoid [B] 
x 2, 
x 1)
Inverter Solenoid
1.17 INVERTER SOLENOID
1. Rear cover 
page 1)
2. Harness guide 
page 19)
3. Inverter solenoid [A] 
x 2, 
x 1, 
x 1, gear x 1, gear cover x 1)
Feed Clutch
ARDF DF3090 (D779)
ARDF DF3090 (D779)
ARDF DF3090 (D779)
1.18 FEED CLUTCH
1. Rear cover 
page 1)
2. Harness guide 
page 19)
3. Bracket [A] 
x 2, 
x 3, 
x 1, bushing x 1, spring x 1)
4. Slide the bracket.
5. Feed clutch [B] 
x 1)
Transport Motor
1.19 TRANSPORT MOTOR
1. Rear cover 
page 1)
2. Harness guide 
page 19)
3. Transport motor [A] 
x 2, 
x 1)