KONICA MINOLTA FieidlDis Service manual

FIXING UNIT

Caution:

When disassembling and reassembling the machine, Be sure the power cord has been unplugged from the wall outlet.

[1] Removing and Reinstalling the Fixing

Unit

Caution: Do not touch the fixing unit

a. Procedure

(1) Draw out the ADU stand. (See “ADU UNIT.”) (2) Loosen two screws and detach the fixing unit

front cover. (3) Open the paper reverse/exit unit. (4) Remove one screw to detach the inlet guide plate

push-down lever. (5) Remove one screw to draw out the fixing unit.

Then, remove it upward.

immediately after turning OFF the main switch because it is very hot and you may suffer burns. Wait until the fixing unit has cooled down sufficiently before working on it.

[2] Removing and Reinstalling the Fixing

Unit Top Cover

Caution: Before opening the fixing unit

a. Procedure

(1) Draw out the ADU stand. (See “ADU UNIT.”) (2) Insert a screwdriver or the like in the hole in the

pressure release shaft and rotate the pressure release shaft to release pressure.

Caution: Perform pressure release with the fix-

(3) Remove the four screws to open the fixing unit

top cover.

top cover, be sure to rotate the pressure release shaft clockwise to release the lower roller. After closing the fixing unit top cover, be sure to rotate the pressure release shaft counterclockwise to apply pressure to the lower roller.

ing unit top cover closed.

Remove four screws.

Fixing unit top cover

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1. Fixing unit

2. Inlet guide plate push-down lever

3. Screws

4. Fixing unit front cover

5. Paper reverse/exit unit (open)

(1) Reinstall the above parts following the removal

steps in reverse.

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Fixing paper exit u nit

Pressure release shaft

Release pressure.

FIXING UNIT

(4) Close the fixing unit top cover following the open-

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ing steps in reverse.

Caution: When the fixing unit top cover has

been closed and secured with the four screws, pressure must be applied to it without fail.

[3] Replacing the Cleaning Web

a. Procedure

(1) Draw out the ADU stand. (See “ADU UNIT.”) (2) Open the fixing unit top cover. (3) Remove the two screws to detach the cleaning

web unit.

Cleaning web unit

Screws (2)

(4) Reinstall the above parts following the removal

steps in reverse. Caution1: When installing the cleaning web,

align the groove in the take-up gear with the shaft pin on the unit, keeping its tension.

Caution2: After replacing the cleaning web,

make sure to reset the count value of the fixing unit cleaning web by “Copy Count by Parts to be Replaced (Fixed Parts)” in the 25 mode.

Gear groove

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FIXING UNIT

[4] Replacing the Fixing Heater Lamps

(Upper/Roller) (L2, L3)

Caution: Do not touch the fixing heater

Caution1: Install the heater lamp with the

Caution2: The heater lamp should not touch

Caution3: When replacing a heater lamp, be

a. Procedure

(1) Remove the fixing unit from the main body. (2) Open the fixing unit top cover. (3) Remove the two screws at the front to detach the

two wire harness clamps.

Caution: Install the wiring clamp screws

(4) Remove one screw and detach the lamp fixing

plate cover. (5) Remove the two screws to detach the front lamp

fixing plate. (6) Remove the two Faston terminals.

lamp with bare hands.

maker mark indication side facing front.

the inner surface of the upper roller.

sure to insert the lamp end in the lamp terminal securely.

through the lower mounting holes. If installed through a wrong mounting hole, the fixing unit front cover cannot be installed.

(7) Remove the two screws at the back to detach two

wiring harness clamps.

(8) Remove the two Faston terminals at the back.

Wiring harness clamps (2)

Screws (2)

Faston terminals (2)

Faston terminals (remove 2)

(9) Pull out the fixing heater lamps (L2, L3) from the

front side of the fixing upper roller.

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1. Front lamp fixing plate

2. Lamp fixing plate cover

3. Screws

4. Wiring harness clamps

5. Faston terminals (2)

6. Faston terminals (remove)

Heater lamps (L2, L3)

(10) Reinstall the above parts following the removal

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steps in reverse.

Caution: When installing new lamps, pay atten-

tion to their orientation. The size of the lamp terminal mounting hole in the front lamp fixing plate is different from that in the rear lamp fixing plate. The lamp inserted in the fixing upper roller in the opposite direction cannot be secured properly.

FIXING UNIT

[5] Removing and Reinstalling the Fixing

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Upper Roller

a. Procedure

(1) Remove the fixing unit from the main body. (2) Release the fixing unit lower contact with the

upper roller. (3) Open the fixing unit top cover. (4) Remove the fixing upper roller heater lamps (L2,

L3). (5) Remove the fixing upper roller upward.

Fixing upper roller

(6) Remove the two C-rings, two gears, two bear-

ings, and two insulating sleeves from the fixing

upper roller.

[6] Removing and Reinstalling the Fixing

Lower Roller

a. Procedure

(1) Remove the fixing upper roller. (2) Remove one screw to detach the fixing knob. (3) Remove the fixing lower roller upward.

Screw

Fixing lower roller

(4) Reinstall the above parts following the removal

steps in reverse.

Fixing knob

1. Collars

2. Bearing

3. Insulating sleeve

4. C-ring

5. Fixing upper roller

6. Gear (iron)

7. Gear (resin)

(1) Reinstall the above parts following the removal

steps in reverse.

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FIXING UNIT

[7] Removing and Reinstalling the Fixing

Heat Roller Assembly

a. Procedure

(1) Remove the fixing unit from the main body. (2) Remove the two springs and one screw (along

with the ground cable) from the thick paper transport auxiliary plate.

Caution: The front and rear springs are different

(3) Remove the two shoulder screws to detach the

thick paper transport auxiliary plate.

(4) Remove the two screws to detach the fixing

plate.

in size and length. Install them properly.

1. Spring (short)

2. Spring (long)

3. Shoulder screws

4. Screw

5. Fixing plate

6. Thick paper transport auxiliary plate

7. Screw/ground wire

(1) Remove the two springs and one screw to detach

the fixing heat roller assembly.

Screw

Spring

Caution: When installing the fixing heat roller

assembly, be sure to fit the guide pin in the guide hole on the rear side.

(2) Reinstall the above parts following the removal

steps in reverse.

Spring

Fixing heat roller assembly

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FIXING UNIT

[8] Replacing the Heater Lamp (Heat

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roller) (L4)

Caution: Do not touch the fixing heater

Caution: Install the heater lamp (heat roller)

a. Procedure

(1) Remove the fixing heat roller assembly. (2) Cut the insulating cable tie to disconnect the con-

nector (CN462). (3) Remove one screw to detach the lamp fixing

plate (rear).

lamp (heat roller)(L4) with bare hands.

(L4) with the maker mark indication side facing front.

Cable tie (for heat insulation)

Connector

Screw

Lamp fixing plate (rear)

(6) Remove the heater lamp (L4) from the front side.

1. Cable ties (for heat insulation)

2. Faston terminal

3. Cable clamp (for heat insulation)

4. Screws

Lamp fixing plate (front)

6. Heater lamp (L4)

(1) Reinstall the above parts following the removal

steps in reverse.

Caution: When reinstalling the lamp, pay atten-

tion to its orientation.

(4) Cut two insulating cable ties and remove the

screw securing the cable clamp to remove the

Faston terminal. (5) Remove one screw to detach the lamp fixing

plate (front).

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FIXING UNIT

[9] Removing and Reinstalling the Fixing

Heat Roller

Caution: Do not touch the fixing heater

a. Procedure

(1) Remove the fixing heat roller assembly. (2) Remove the heater lamp (lower) (L4). (3) Remove the two C-rings and the front bearing to

remove the fixing heat roller.

(4) Remove two insulating sleeves from the fixing

heat roller.

Caution: Reinstall the front and rear insulating

C-ring

Insulating sleeve

lamp (lower)(L4) with bare hands.

sleeves with the collars facing toward the fixing heat roller.

Bearing

Collar

Fixing heat roller

Collar

Insulating sleeve

C-ring

[10] Removing and Reinstalling the Fixing

Separation Claws (Lower)

a. Procedure

(1) Open the fixing paper exit unit. (2) Remove the two screws to detach the fixing sep-

aration claws (lower) assembly.

Screws

Fixing separation claws (lower) assembly

(3) Remove the spring supporting each fixing sepa-

ration claw (lower).

(4) Remove the fixing separation claws (lower).

Fixing separation claw (lower)

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(5) Reinstall the above parts following the removal

steps in reverse.

Spring/lower

(5) Reinstall the above parts following the removal

steps in reverse.

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FIXING UNIT

[11] Removing and Reinstalling the Fixing

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Separation Claws (Upper)

a. Procedure

(1) Open the fixing paper exit unit. (2) Remove the six springs connected to the fixing

separation claws. (3) Remove the six fixing separation claws.

Fixing separation claws (upper)

Spring

(4) Reinstall the above parts following the removal

steps in reverse.

[12] Removing and Reinstalling the

Actuator for Fixing Exit PS (PS2)

a. Procedure

(1) Open the fixing paper exit unit. (2) Disconnect the two connectors (CN464, 465). (3) Remove one screw to detach the fixing separa-

tion claw (lower) (on the drive side).

(4) Remove the two screws to detach the actuator/

sensor assembly.

Screws

Connectors (CN464)Connectors

(CN465)

(5) Remove the spring from the actuator/sensor

assembly to detach the actuator for fixing exit PS (PS2).

Actuator/ sensor assembly

Fixing paper exit actuator

(6) Reinstall the above parts following the removal

steps in reverse.

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FIXING UNIT

[13] Removing and Reinstalling Fixing

Temperature Sensors 1 and 2

Caution1: After reinstalling fixing temperature

sensor 2, make sure that the sensor touches the fixing upper roller.

Caution2: Make sure the sensor wires do not

touch the fixing upper roller.

Caution3: When reinstalling fixing temperature

sensor 1, adjust its position using the positioning jig (4014-5001-01) and secure it with screws. Be sure to apply screw lock agent to the screws.

a. Removal procedure

(1) Open the fixing unit top cover. (2) Remove the two screws to detach the fixing unit

top cover.

Fixing unit top cover (upper)

Screws

(5) Remove one screw (on the fixing plate side) to

detach fixing temperature sensor 2.

Fixing temperature sensor 1 (CN466)

Fixing temperature sensor 2 (CN467)

Screws

Fixing temperature sensor 2

b. Reinstallation procedure

(1) Secure fixing temperature sensor 2 with a screw. (2) Make sure that fixing temperature sensor 2

touches the fixing upper roller. If they do not touch each other, be sure to bring the sensor in touch with the roller.

(3) Set a fixing temperature sensor positioning jig

between fixing temperature sensor 1 and fixing upper roller, and secure fixing temperature sensor 1 with two screws so that the distance between the sensor and roller is equal to the thickness of the jig.

Fixing temperature sensor 1

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(3) Disconnect the two connectors (fixing tempera-

ture sensor 1, CN466; fixing temperature sensor 2, CN467) and release the sensor wires from the cable guides.

(4) Remove the two screws to detach fixing temper-

ature sensor 1.

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The fixing temperature sensor 2 must contact the fixing upper roller.

Fixing upper roller

Positioning jig (4014-5001-01)

Fixing temperature sensor 1

Screws

FIXING UNIT

a) Set the distance “a” between the fixing tem-

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perature sensor 1 and fixing upper roller so that it is equal to the thickness of the positioning jig.

Fixing upper roller

Standard value of a: 0.75±0.1 mm

(4) Apply screw lock agent to the two screws secur-

ing fixing temperature sensor 1. (5) Secure the wires of fusion temperature sensors

1 and 2 in the wire guides, and connect their con-

nectors. (6) Reinstall other parts following the removal steps

in reverse.

Fixing temperature sensor 1

[14] Removing and Reinstalling Fixing

Temperature Sensors 3 and 4

Caution1: After reinstalling fixing temperature

Caution2: Make sure the sensor wires do not

Caution3: When reinstalling fixing temperature

a. Removal procedure

(1) Remove the fixing heat roller assembly. (2) Disconnect one connector (CN469), remove the

screw to detach the cable clamp, and cut insulating ties.

(3) Remove one screw (on the fixing plate side) to

remove fixing temperature sensor 4.

sensor 4, make sure that the sensor touches the fixing heat roller (upper).

touch the fixing heat roller.

sensor 3, adjust its position using the positioning jig (4014-5002-01) and secure it with screws. Be sure to apply screw lock agent to the screws.

Fixing temperature sensor 4

Cable ties

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Screw

Screw/wiring harness clamp

FIXING UNIT

(4) Disconnect one connector (CN468) and remove

four screws to detach two wire clamps.

(5) Remove the two screws to detach fixing temper-

ature sensor 3.

Fixing temperature sensor 3

Screw/wiring

Screws (2)

harness clamps

b. Reinstallation procedure

(1) Secure fixing temperature sensor 4 with a screw. (2) Make sure that fixing temperature sensor 4

touches the fixing heat roller (upper). If they do not touch each other, be sure to bring the sensor in touch with the roller.

(3) Set a fixing temperature sensor positioning jig

between fixing temperature sensor 3 and fixing heat roller, and secure fixing temperature sensor 3 with two screws so that the distance between the sensor and roller is equal to the thickness of the jig.

Fixing heat roller

Screws (two)

Positioning jig (4014-5002-01)

Fixing temperature sensor 3

a) Set the distance “a” between the fixing tem-

perature sensor 3 and fixing heat roller so that it is equal to the thickness of the positioning jig.

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Fixing heat roller

Fixing temperature sensor 3

Standard value of a = 0.7±0.1 mm

FIXING UNIT

(4) Apply screw lock agent to the two screws secur-

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ing fixing temperature sensor 3. (5) Secure the wires of fixing temperature sensors 3

and 4 with wire clamp and ties, and connect the

connectors. (6) Reinstall other parts following the removal steps

in reverse.

[15] Removing and Reinstalling the

Thermostat (Upper)

Caution: This is an important safety part.

Be sure to observe the following cautions and steps when removing or reinstalling.

Caution1: After reinstalling the thermostat

(upper), make sure that its wires do not touch the fixing upper roller.

Caution2: When reinstalling the thermostat

(upper), adjust its position using the thermostat PS jig/A (4014-5003-01) and secure it with screws. Be sure to apply screw lock agent to the screws. Make this adjustment with pressure applied.

a. Removal procedure

(1) Open the fixing unit top cover. (2) Remove the two screws to detach the fixing unit

top cover.

Fixing unit top cover

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Screws (2)

FIXING UNIT

(3) Remove one screw and remove two Faston ter-

minals to detach the thermostat.

Screw

Thermostat (upper)

Faston terminals (2)

b. Reinstallation procedure

(1) Connect two Faston terminals to the thermostat

(upper).

(2) Set a thermostat positioning jig between the ther-

mostat (upper) and fixing upper roller, and secure the thermostat (upper) with one screw so that the distance between the roller and thermostat equal to the thickness of the jig.

Faston terminal

Fixing upper roller

Thermostat PS jig/A (4014-5003-01)

a) Set the distance “a” between the thermostat

(upper) and fixing upper roller so that it is equal to the thickness of the thermostat PS jig/A.

Screw

Thermostat (upper)

Faston terminal

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Fixing upper roller

Standard value of a = 3.0±0.2 mm

(3) Apply screw lock agent to the screw securing the

thermostat (upper).

(4) Reinstall other parts following the removal steps

in reverse.

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Thermostat (upper)

FIXING UNIT

[16] Removing and Reinstalling the

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Thermostat (Lower)

Caution: This is an important safety part.

Be sure to observe the following cautions and steps when removing or reinstalling.

Caution1: After reinstalling the thermostat

(upper), make sure that its wires do not touch the fixing heat roller.

Caution2: When reinstalling the thermostat

(upper), adjust its position using the thermostat PS jig/B (4014-5004-01) and secure it with screws. Be sure to apply screw lock agent to the screws.

a. Removal procedure

(1) Remove the fixing heat roller assembly. (2) Remove two Faston terminals from the thermo-

stat (lower). (3) Remove one screw to detach the thermostat

(lower).

b. Reinstallation procedure

(1) Set a thermostat PS jig/B between the thermo-

stat (lower) and fixing heat roller, and secure the thermostat (lower) with one screw so that the distance between the roller and thermostat equal to the thickness of the jig.

Thermostat PS jig/B (4014-5004-01)

Thermostat (lower)

Fixing heat roller

a) Set the distance “a” between the thermostat

(lower) and fixing heat roller so that it is equal to the thickness of the thermostat PS jig/B.

Thermostat (lower)

Faston terminal

Thermostat (lower)

Screw

Fixing heat roller

Standard: a = 3.0±0.20 mm

(2) Connect two Faston terminals to the thermostat

(lower).

(3) Apply screw lock agent to the screw securing the

thermostat (lower).

(4) Reinstall other parts following the removal steps

in reverse.

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EXTERNAL SECTION

RADF

Caution:

When disassembling and reassembling the machine, Be sure the power cord has been unplugged from the wall outlet.

[1] Removing the RADF

a. Procedure

(1) Remove the rear cover. (2) Remove two screws to detach the two stoppers.

Screws

(3) Open the RADF to the upright position. (4) Remove the three screws to detach the top cover

(rear) of the main unit.

Stopper

(5) Remove the screw to disconnect the ground

cable.

(6) Remove the two relay connectors (CN31, CN32).

1. Relay connector (CN32)

2. Relay connector (CN31)

3. Screw

4. Ground cable

(7) Remove the three screws to detach the cable

conduit.

Cable conduit

3 DIS./ASSEMBLY1 DIS./ASSEMBLY

Top cover (rear)

Screws

(8) Draw the cable to the top of the main unit.

Screws

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RADF

(9) Close the RADF. Remove the two screws to

3 DIS./ASSEMBLY1 DIS./ASSEMBLY

detach each of the two fixing plates (R).

Fixing plate (R)

(10) Open the RADF up to the upright position. (11) Holding the RADF, remove one screw to detach

each of two fixing plates. (12) Holding the RADF, remove it from the main unit.

Caution: When the fixing plates (F) are

removed, the RADF may fall down to the rear side. Be sure to hold the RADF while performing steps 11 and

12.

Fixing plate (F)

Screws

[2] Reinstalling the RADF

a. Procedure

(1) Place the RADF on the top of the main unit and

loosely secure each of the two fixing plates (F) with one screw.

Note: The necked hole in the fixing plate (F)

(2) Remove the two screws to detach the original

(3) Following the removal procedure in reverse,

(4) Install two RADF positioning jigs in the mounting

must fit over the guide screw.

stopper plate (left).

1. Original stopper plate (left)

2. Screws

3. Necked hole

4. Guide screw

5. Screws (tighten temporarily)

6. Fixing plate (F)

install the cable conduit, two relay connectors (CN31, CN32), ground cable, and top cover (rear) of the main unit.

holes of the original stopper plate (left).

Screw

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RADF

(5) Close the RADF to mate the reference holes and

RADF positioning jigs.

1. RADF positioning jigs

2. Reference hole (oblong hole)

3. Reference hole (round hole)

(6) Install two screws to secure each of the two fixing

plates (R) following the removal procedure in reverse.

(7) Open the RADF, install the other screw for each

of the two fixing plates (F), and finally tighten all the four screws to secure the two fixing plates (F).

(8) Remove the RADF positioning jigs and install the

original stopper plate (left) with two screws.

(9) Close the RADF and check whether both stopper

pieces on the RADF-side touch the slit glass.

Note: The state of contact between the stopper

pieces and the silt glass can be checked by looking into the slits in the top cover of the main unit.

1. Stopper piece

2. Slit glass

3. Slit

4. Top cover (middle)

(10) If both stopper pieces do not touch the slit glass

at the same time, make adjustments using adjusting screws A and B alternately.

Adjusting screws B Adjusting screws A

3 DIS./ASSEMBLY1 DIS./ASSEMBLY

(11) Perform steps (9) and (10) repeatedly until the

two stopper pieces touch the slit glass at the same time.

(12) Install the rear cover of the main unit.

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RADF

ORIGINAL FEED/CONVEYANCE/EXIT SECTION

3 DIS./ASSEMBLY1 DIS./ASSEMBLY

Caution:

When disassembling and reassembling the machine, Be sure the power cord has been unplugged from the wall outlet.

[1] Replacing the Pickup Roller and Con-

veyance Roller Rubber

a. Procedure

(1) Open the Jam access cover. (2) Remove the screw to detach the sensor cover.

Screws

Jam access cover

(3) Remove the spring. (4) Remove the two stop rings to slide the bearing

and one-way clutch outward. (5) Slide the original feed roller unit to the front to

release it from the coupling, then remove it

upward.

Sensor cover

(6) Remove the original feed roller rubber from the

original feed roller.

389

1. Original feed roller unit

2. Bearing

3. Stop ring

4. Coupling

5. Stay

6. Original feed tray

7. Spring

8. Angled portion

9. One-way clutch

10. Angled portion of original feed roller unit

11. Angled portion of stay

(7) Clean rollers using a blower brush or the like. (8) Reinstall the original feed roller unit in the

reverse order of the removal procedure.

Note: Caution:Make sure the angled portion of the

original feed roller unit is positioned above the angled portion of the stay. If the angled portion of the original feed roller unit is positioned below the angled portion of the stay, originals are not fed properly.

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RADF

[2] Cleaning the Cleaning Pad

a. Procedure

(1) Open the movable cover. (2) Remove one screw to detach the cleaning pad. (3) Using a blower brush, clean the cleaning pad.

1. Screw

2. Cleaning pad

3. Movable cover

4. Registration roller

(4) Reinstall the above parts following the removal

steps in reverse.

[3] Replacing the Original Feed Roller/

Separation Roller/Auxiliary Separation Roller

a. Procedure

(1) Remove the original feed roller unit. (2) Remove the one-way clutch. (3) Remove stop ring (1) to detach gear (1) and belt. (4) Remove stop ring (2) and pull out shaft (1) to

detach the original feed roller.

(5) Pull the pin for gear (1) and the spacer from shaft

(2).

(6) Remove stop rings (3), (4), and (5) to pull the pin

for gear (2) from shaft (2). (7) Pull out shaft (2) to detach the separation roller. (8) Remove stop ring (6) to pull the pin for gear (3)

from shaft (3).

3 DIS./ASSEMBLY1 DIS./ASSEMBLY

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RADF

(9) Pull out shaft (3) to detach the auxiliary separa-

3 DIS./ASSEMBLY1 DIS./ASSEMBLY

tion roller.

17 131416 15

1. Stop ring (3)

2. Auxiliary separation roller

3. Original feed roller

4. Gear (3) (with a pin)

5. Shaft (1)

6. Stop ring (2)

7. Stop ring (6)

8. Shaft (3)

9. Shaft (2)

1011

10. Stop ring (5)

11. Gear (2) (with a pin)

12. Stop ring (4)

13. Separation roller

14. Spacer

15. Gear (1) (with a pin)

16. Stop ring (1)

17. One-way clutch

18. Belt

(10) Reinstall the original feed roller/separation roller/

auxiliary separation roller in the reverse order of the removal procedure.

Caution: Make sure the one-way clutch and roll-

ers are oriented properly when reinstalling them.

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RADF

[4] Cleaning the Paper Separation Rub-

ber

a. Procedure

(1) Remove the original feed roller unit. (2) Clean the paper separation rubber using a drum

cleaner and cleaning pad.

Paper separation rubber

(3) Reinstall the cleaning roller in the reverse order

of the removal procedure.

[5] Replacing the Double Feed Preven-

tion Roller/Torque Limiter

a. Procedure

(1) Remove the original feed roller unit. (2) Remove the two screws to detach the auxiliary

roller assembly.

Screws

Auxiliary roller assembly

(3) Remove the stop ring to detach the gear. (4) Slide the two bearings outward to detach the

double feed prevention roller unit.

3 DIS./ASSEMBLY1 DIS./ASSEMBLY

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1. Double feed prevention unit

2. Bearing

3. Stop ring

4. Gear

RADF

(5) Remove the stop ring to detach the double feed

3 DIS./ASSEMBLY1 DIS./ASSEMBLY

prevention roller and torque limiter.

(6) Reinstall the double feed prevention roller and

torque limiter in the reverse order of the removal procedure.

Note: Make sure the double feed prevention

roller is oriented properly when reinstalling it.

Double feed prevention roller

Torque limiter

Stop ring

[6] Cleaning Photo Sensors/Mirrors for

Photo Sensors

a. Procedure

(1) Close the RADF. (2) Clean sensors using a blower brush or the like.

PS310 (Original count detection)

PS303 (Original size detection 2)

PS303 (Original size detection 1)

(3) Open the RADF. (4) Remove the two screws to detach the driven

roller assembly.

(5) Remove the two screws to detach the original

conveyance guide.

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1. Driven roller assembly

2. Screws

3. Original conveyance guide

RADF

(6) Using a blower brush or the like, clean the mirror

on the driven roller assembly and the three mirrors on the original conveyance guide.

1. Mirror

2. Driven roller assembly

3. Original conveyance guide

(7) Open the platen guide. (8) Clean sensors using a blower brush or the like.

1. PS309 (Original reversal detection)

2. PS304 (Reverse jam detection)

3. Platen guide

4. PS313 (Original exit reverse detection)

5. PS312 (Original skew detection 2)

6. PS308 (Original conveyance detection PS)

7. PS311 (original skew detection 1)

(9) Clean the two mirrors on the back of the platen

guide using a blower brush or the like.

Mirrors

(10) Reinstall the photo sensors/mirrors for photo

sensors in the reverse order of the removal pro-

cedure.

Platen guide

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