DUPLO DF-990 (01) PDF MANUAL

In this manual, several symbols are used to indicate important warnings. These symbols have the following meanings:

Exclamation Point Icon: Describes instructions which must be followed in use. Be sure to read the instructions to avoid problems due to incorrect operations.

Lightbulb Icon: Indicates supplementary or useful information.

Book Icon: Describes names of related items and supplementary instructions.

Power supply

Make sure the power supply used is always within the following range.

Power supply: 100 to 240 V AC, 50/60 Hz

When you power other appliances from the same AC outlet, make sure that the combined power consumption does not exceed the power supply capacity.

Rated power: 100 W

Rated current: 1.0 to 0.5 A

Operating environment

Operate this unit in the following environment.

• where the temperature range is between 5 and 35°C/41 and 95°F (–10 to 50°C/14 to 122°F in storage)

• where the humidity range is between 20 and 80% RH (10 to 90% RH in storage, however no condensation)

• which is not subject to direct sunlight

• where the outside light does not exceed 1,500 lx

• which is subject to little or no vibration

• where the unit is kept away from air-borne salt

• where the unit is kept away from harmful chemicals

• where the unit is not exposed to water

“WARNING” and “CAUTION” labels are pasted on the machine to ensure user safety. Do not remove or change them. When the labels become dirty or are lost, be sure to contact your dealer for a new one.

• This machine is designed to fold paper into six popular folding modes: Single fold, Double fold, Irregular accordion fold-out, Letter fold, Accordion-fold, and Gate fold.

• Use the cross fold lever to fold single folded paper further into standard folding.

• Use the DF HAND FEED KIT (option) to bind and fold at maximum three sheets of paper simultaneously.

• Do not fall down the folding plates. Make sure the folding plates are not subject to shock. Otherwise, the folding plates may be damaged, resulting in poor folding accuracy.

• The machine may make loud sounds while operating according to the processing speed and paper used due to its paper-folding mechanism.

• Be sure to move this machine with the bottom surface of this machine held by two persons.

No.	Name	QTY DF-999/DF-999A	QTY DF-990/DF-990A	Function
[1]	Cross fold lever	1	1	For holding down the folded paper when cross fold.
[2]	Auxiliary paper ejection guide	1	1	Attached to the stacker roller at the ejecting section.
[3]	Folding plate 1	1	1	Attached to the upper right section on the operator’s side.
[4]	Folding plate 2	1	1	Attached to the lower left section on the operator’s side.
[5]	Paper support guide	1	1	Attach it to the paper receiving tray from the paper ejecting section. A4/LT size fine quality paper of 64 g/m²/43.52 lbs, 81.4 g/m²/55.35 lbs will be well in alignment by using this paper support guide at the time of paper ejection for letter fold or accordion fold.
[6]	T-handle hexagonal wrench	1	1	Used when moving the auxiliary paper feed ring. Do not use the T-handle hexagonal wrench for a purpose other than handling the auxiliary paper feed ring as instructed in this manual.
[7]	Scale label	1	1	Used to measure non-standard size paper. Attach the scale.
[8]	Instruction manual	1	1	This manual
[9]	Safety Guide A	1	1	Contains information for correct and safe use of this machine.
[10]	DECLARATION OF CONFORMITY	1	1	For EU
[11]	WEEE Statement	1	1	For EU
[12]	Statement of Electromagnetic Compatibility (EMC)	1	1	For NA
[13]	Power cord	1	1	For EU
[14]	Power cord	1	1	For NA

1. Open the side cover.

2. Remove the tape fixing the lever. Be sure to remove this tape, or the machine cannot detect the presence of folding plate 2.

3. Check that the folding stopper on folding plate 2 does not protrude from the cover on the paper feeding side. If it does, rotate the gear to move the stopper to the inner section. Do not hold the belt section of folding plate 2, as this can cause a malfunction.

4. Hold folding plate 2 by the labeled areas and insert it into the machine, moving its rollers along the machine’s rails.

5. Store the T-shape hexagonal wrench accessory in its designated position inside the machine.

6. Close the side cover. The cover will not close if folding plate 2 is not attached correctly. Do not force it closed.

7. Open the support paper feed tray on the left side (from the operator’s view).

8. Insert folding plate 1 into the main body along the set guide. Hold it with both hands. If it’s difficult to attach, check that the gear on the reverse side rotates.

9. Open the top cover gently to avoid catching hands or fingers.

10. Rotate the jam correction handle to check that the folding roller rotates smoothly.

11. Place the cross fold lever in its specified storage place and direction. Incorrect placement may lead to damage during operation.

12. Close the top cover.

13. Open the paper receiving tray on the right side (from the operator’s view).

14. Attach the auxiliary paper ejection guide to the stacker roller.

1. Install the power cord to the machine.

2. Connect the power plug to the outlet.

WARNING: Do not touch the power plug with wet hands. Otherwise electric hazards may occur.

External Parts

[1] Control panel	Use this panel to enter information to operate the machine.
[2] Power switch	Turns the machine on and off.
[3] Side cover	Safety cover to prevent the user from touching the moving parts.
[4] Power inlet	Connector for the power cord.
[5] Support paper feed tray	For ensuring paper is stacked on the paper feed tray properly.
[6] Paper feed tray	For stacking the paper to be folded.
[7] Top cover	Safety cover to prevent the user from touching the moving parts. The top cover keeps hands or fingers from being caught and injured.
[8] Folding plate 1	Guide plate for deciding the paper folding position.
[9] Folding plate 2	Guide plate for deciding the paper folding position.
[10] Paper set lever (DF-990/DF-990A)	This lever is used to move the paper feed tray up and down when stacking paper.

Internal Parts (Paper Ejecting Section)

[1] Stacker lever	This is the lever that supports the stacker roller. The height of the roller can be adjusted.
[2] Ejecting section	For receiving folded paper ejected out.
[3] Paper receiving tray	For stacking ejected paper.
[4] Stacker belt	For ejecting folded paper.
[5] Stacker roller	It holds down the ejected paper and supports conveyance of paper.
[6] Auxiliary paper ejection guide	Used to hold the ejected paper.
[7] Paper support guide	A4/LT size fine quality paper will be well in alignment by using this guide at the time of paper ejection for letter fold or accordion fold.

Internal Parts (Top Cover Section)

[1] Feeding pressure adjustment lever	For adjustment of the paper feed pressure.
[2] Guide fixing screw	For securing the paper feed guide.
[3] Skew correction knob	For correcting skewed paper feed.
[4] Paper feed guide	For holding paper stacked on the paper feed tray firmly.
[5] Paper separator	Located underneath the paper feed ring, and prevents double-feed.
[6] Cross fold lever	For holding down the folded paper when cross fold.
[7] Auxiliary paper feed ring (movable)	Functions in the same way as the auxiliary paper feed ring. The position can be adjusted in accordance with paper size in cross fold.
[8] Paper feed ring	The main paper feed ring. Ensures smooth feeding of paper in combination with the paper separator.
[9] Auxiliary paper feed ring	For holding down curled paper for reliable paper feed.
[10] Folding roller	These rollers are used to fold paper. This machine is equipped with four rollers to make six types of folding.
[11] Jam correction knob	For rotating the folding rollers when paper has jammed inside the machine or when cleaning the machine.
[12] Separating pressure adjustment dial	For adjustment of the paper separating pressure.

No.	Name	Function
[1]	Manual feed top cover	Safety cover to prevent the user from touching the moving parts.
[2]	Manual paper feed tray	Stack paper to be fed manually and folded.
[3]	Manual skew correction knob	For correcting skewed paper feed.
[4]	Auxiliary feed guide	Subordinately guides sheets so that the paper will be fed properly (magnet type).
[5]	Manual feed guide	Guides sheets so that the paper will be fed properly.

No.	Name	Function
[1]	LCD touch panel	Menu and error messages are displayed. Touch to operate.
[2]	(folding plate paper ejection) key	Press and hold to forcibly eject paper from inside the folding plate.
[3]	Lamp	When the machine is in power saving mode, the lamp blinks slowly. When a service message is displayed, it blinks faster.
[4]	(start) key	Press to start paper folding.
[5]	(stop) key	Press to stop paper folding.
[6]	(test) key	Press to test fold. By testing the paper feed, the machine will remember the thickness of the paper.
[7]	(paper ejection) key	Press and hold to forcibly eject paper from inside the machine.
[8]	Separating pressure adjustment scale	This scale is used when adjusting the separating pressure.
[9]	Paper feed pressure adjustment scale	This scale is used when adjusting the paper feed pressure.

• The touch panel is designed to be touched lightly with a finger or a pen (tip radius 0.8 or smaller). Do not press the panel strongly or push it with any sharp objects (fingernail, ball-point pen, pin).

• The touch panel may not work correctly or may malfunction if you perform the following operations:

– Operation with the tip of a nail

– Operation with a foreign object placed on the touch panel

– Operation with a protective sheet or sticker applied to the touch panel

– Operation with the touch panel being wet

– Operation with a finger wet with sweat or water

The term “Touch” means lightly touching an item once. “Press and hold” means pressing an item for more than 1 second.

“pi”: Operational sound at the time of normal key operation.

“pipi”: Warning alarm for mis-operation, mis-feed of paper, or paper empty.

“pii”: At the start or end of normal folding operation. Also sounds when saving changes in settings or when a set alarm time has come.

“piipii”: At the occurrence of an error such as a paper jam.

“piipiipiipii”: At the occurrence of an error that requires a Duplo dealer’s assistance.

Paper Type

• Fine quality paper: 46.5 to 157 g/m² / 31.62 to 106.76 lbs

• Rough paper, Stencil paper, Recycle paper, Specific art paper, Specific coated paper

Paper Size

• Standard Paper: A3/B4/A4/B5/A5/B6 (For EU), LGR/LGL/LTR/STMT/INV (For NA). Must be stacked in the machine direction.

• Non-standard paper: Width 74 to 311 mm (2.91 to 12.24 inches), Length 105.0 to 457.2 mm (4.13 to 18.0 inches). Some limitations may apply. The A6, A7, or B7 paper can be used as non-standard paper (For EU).

Paper that cannot be used with this machine

• Paper out of specifications

• Curled paper

• Wavy paper

Paper Used

• Make sure that the printing ink on the paper has dried completely prior to use.

• Wet or not completely dried ink may stain the folding roller, causing smearing on paper.

• Using paper printed with special inks may cause the folding roller to swell or deform, leading to folding misalignment.

• Flatten curled paper or paper with folded lines before use to ensure smooth feeding.

• Separate the sheets of paper well before stacking them.

Precautions on Stacking Paper

• Do not stack paper on the feed tray with the side edges unaligned or with some sheets protruding. This can cause inaccurate paper size detection (DF-999/DF-999A) and lead to folding misalignment and jamming.

• Do not stack paper with the lead and trail edges unaligned or protruding. This can lead to unstable feed, miss-feed, and double-feed.

1. Connect the power cord.

2. Turn on the power.

3. Stack paper.

4. Set basic settings.

5. Set paper size (DF-990/DF-990A).

6. Select folding mode.

7. Adjust feed pressure/separating pressure.

8. Set processing speed.

9. Position the paper receiving tray.

10. Perform a test fold.

11. Set the counter.

12. Start the process.

13. Wait for the process to end.

14. Turn off the power.

15. Disconnect the power cord.

First, make sure the power plug is connected to the wall socket.

To turn on: Set the power switch to the “I” side.

To turn off: Set the power switch to the “O” side.

WARNING: Do not touch the power switch with wet hands. Otherwise electric hazards may occur.

CAUTION: Do not put fingers inside during operation. Keep away long hair, ties, jewelry, and loose clothing.

Steps 1 and 6 are not necessary for DF-999/DF-999A models.

1. Raise the paper set lever. The paper feed stand will come down.

2. Loosen the guide fixing screw.

3. Stack paper on the paper feed tray. Push the paper in until the lead edge lightly touches the paper feed inlet. The maximum stacking height is 46 mm/1.81 inches.

4. Adjust the paper feed guide to match the paper size so it lightly touches the paper. Do not press the guides too strongly, as this can cause mis-feeds. For DF-999/DF-999A, incorrect guide position will prevent automatic paper size detection.

5. Tighten the guide fixing screws on both sides. If not fixed, the guides can move during operation and cause misalignment.

6. Lower the paper set lever. The paper feed stand will go up to the feeding position.

Note for DF-999/DF-999A: The paper feed tray rises automatically when paper is stacked and the start or test key is pressed. If using large or heavy paper, stack less paper to ensure the tray can rise.

This example uses A4 paper and a “Single Fold.”

1. On the [Ready] screen, touch the appropriate key to enter the settings menu.

2. Touch the [Standard Fold] key. For DF-999/DF-999A, the Folding Mode screen appears; proceed to step 4. For DF-990/DF-990A, the Standard Paper Size screen appears.

3. (DF-990/DF-990A only) Touch the [A4] key.

4. Touch the key for the desired fold (e.g., Single Fold key). The display returns to the [Ready] screen.

5. Set the feeding pressure adjustment lever to [0]. Increase to [1] for mis-feeds, or decrease to [-1] for double-feeds.

6. Set the separating pressure adjustment dial to [0]. For double-feeds, increase the pressure by 0.5 on the scale.

7. Touch the speed control keys to set the processing speed. Use a slower speed for thin paper and a faster speed for thick paper to prevent issues.

8. Adjust the position of the paper receiving tray. Set to [A] to stack paper diagonally, or [B] to stack it straight.

9. If needed, attach the paper support guide to the paper receiving tray. Match the concave sections on the guide with the convex sections on the tray.

10. Press the (test) key to perform a test fold. Test sheets are not counted.

11. Check the finish of the test fold. If there is misalignment, refer to the “Correcting Folding Misalignment” procedures.

12. To set a job quantity, touch the (No. of Sheet setting) key. Use the numeric keypad to enter the number of sheets and touch the return key for count-down mode, or touch the count-up key to start from zero.

13. Press the (start) key to begin folding. Press the (stop) key to interrupt the operation. Press start again to resume.

1. Turn off the power switch.

2. Disconnect the power plug from the outlet.

3. Remove the power cord from this machine.

WARNING: Do not touch the power switch or plug with wet hands.

4. Close the support paper feed tray.

5. Remove the auxiliary paper ejection guide and paper support guide. Store them with caution so as not to lose them.

6. Return the height of the stacker roller to the standard position.

7. Hang the hook section of the paper receiving tray.

8. Hang the auxiliary paper ejection guide on the paper receiving tray.

When the folded paper is misaligned along the sides, correct it using the skew correction knob on the paper feed tray.

1. Check that the paper feed guides are set correctly. Gaps can cause this type of misalignment.

2. Remove the paper stacked on the paper feed tray.

3. Rotate the skew correction knob to adjust:

– Rotate clockwise to make the leading edge on the right side (control panel side) feed earlier.

– Rotate counterclockwise to make the leading edge on the left side (non-operator’s side) feed earlier.

4. Stack paper on the feed tray again.

5. Tighten the guide fixing screw on the paper feed guide.

6. Perform a test fold to check the result.

7. After completing folding operations, return the skew correction knob to the standard position (pin in round hole).

For misalignment along the vertical length of the paper, adjust the folding stopper positions of folding plates 1 and 2 using the [Fold Position] screen.

Adjustment Method

1. Touch the adjustment key on the [Ready] screen. The [Fold Position] screen is displayed.

2. Use the adjustment keys for Folding A (plate 1) and Folding B (plate 2) to move the stoppers. The stopper moves 0.1 mm/0.004 inch per press. Press and hold to change the value continuously.

3. You can also touch the value display (e.g., [A:x.x mm]) to open a numeric keypad and enter the value manually.

Saving the Adjusted Value

The changed value is cleared when power is turned off. To save it for future use:

• For standard paper, touch the Save key, then press and hold the appropriate key to save.

• For non-standard or custom folds, touch the appropriate key, then select and save to a custom data number.

Standard folding of non-standard paper is a method to perform paper folding by saving paper lengths other than standard paper and selecting the folding mode.

Example: Performing a letter fold on 300.0 mm length paper.

1. Touch the appropriate key on the [Ready] screen, then touch [Standard Fold for Non-Standard Size].

2. Using the numeric keypad, enter the paper length [300] and touch the return key.

3. Touch the key for the desired fold (e.g., letter fold) to return to the [Ready] screen. Then proceed with the folding operation.

Custom folding allows you to fold paper at any position by specifying the folding stopper positions for plates 1 and 2.

Creating a Custom Fold

1. Prepare a folding sample manually using the paper to be folded.

2. Measure the length of the folding positions of the sample (Length A and Length B).

3. On the [Ready] screen, touch the appropriate key to access the [Paper Length] input screen.

4. Touch the key to enter custom fold mode. For DF-990/DF-990A, you will first select the paper size.

5. The [Create New Custom Fold] screen appears. If needed, enter the paper length first.

6. Touch the [A: xxxx.x mm] key, use the numeric keypad to enter the measured folding A length, and touch the return key.

7. Touch the [B: xxxx.x mm] key, use the numeric keypad to enter the measured folding B length, and touch the return key.

8. To save the custom fold, touch the save key. The [Save] screen will be displayed. Select an empty slot and touch the save key again.

Using Saved Custom Fold Data

1. From the [Ready] screen, access the [Custom Fold] saved data selection screen.

2. Touch the forward/backward keys to find your saved data number.

3. Select the desired data number, then touch the Open key. The machine is now set to your custom fold, and you can proceed with folding.

Editing, Locking, and Deleting Custom Fold Data

On the [Custom Fold] screen, you can use the on-screen keys to:

• Edit: Select a saved data slot and touch the (Edit) key.

• Lock/Unlock: Select a saved data slot and touch the (Lock/Unlock) key. Locked data cannot be deleted.

• Delete: Select an unlocked saved data slot and press and hold the (Delete) key.

Cross fold is folding a single-folded paper a second time. The maximum paper thickness is fine quality paper 104.7 g/m²/71.20 lbs.

1. Stacking Paper and Adjusting Parts

1. First, single fold your standard paper.

2. Press the folded line of the single-folded paper firmly with your fingertip.

3. (DF-990/DF-990A) Raise the paper set lever.

4. Loosen the guide fixing screw.

5. Stack the single-folded paper on the feed tray with the folded line toward the non-operator’s side. Stack about half the height of the paper feed guide (approx. 25 mm).

6. Turn off the power and disconnect the plug.

7. Open the top cover and use the T-handle wrench to loosen the screw of the auxiliary paper feed ring.

8. Move the auxiliary paper feed ring so it will be on the folding line of the paper.

9. Tighten the screw and store the T-handle wrench.

2. Operation

1. Turn on the power.

2. Set the separating pressure dial to [0]. Setting it high can cause the paper to open during feed.

3. Set the feeding pressure adjustment lever to [3] (or within the range [3] to [5]).

4. Take out the cross fold lever from its storage and attach it to the paper feed guide on the left side, ensuring the weight roller will be on the folding line.

5. Close the top cover.

6. Press the test key to execute a test fold and check the finishing.

7. After finishing, turn off the power and return the cross fold lever and auxiliary paper feed ring to their original positions.

Art Paper / Coated Paper

These papers often stick together. Follow these steps:

1. Separate the paper well.

2. Align the paper.

3. Stack the paper on the feed tray. Do not stack too many sheets (approx. half the height of the guide, 25mm/0.98 inch) to prevent sticking.

4. Set the feeding pressure adjustment lever to [3] (or up to [5] if mis-feed occurs).

5. Set the separating pressure adjustment dial to [2.5]. Increase by [0.5] if double-feed occurs.

6. Test fold and check the finish. Decrease processing speed if folding is abnormal.

7. After finishing, return the pressure settings to [0].

Rough Paper / Recycled Paper

These papers can be thin, flimsy, and prone to curling.

• Separate the paper well before stacking.

• Set the processing speed as low as possible to prevent wrinkles.

• Set the paper feed pressure as low as possible to prevent double-feed.

• Set the paper separating pressure as low as possible to prevent scratching the lead edge.

Changing Stacker Roller Height

For thick or stiff paper that may not eject smoothly, you can change the stacker roller height to widen the space.

1. Remove the auxiliary paper ejection guide and paper support guide.

2. Lift the stacker roller and move it to the higher [A] position shown in the figure.

After completing folding, be sure to return the stacker roller to the standard position to ensure proper alignment of ejected paper.

Adjusting Stacker Roller Position

During cross folding or when folding thick paper, adjust the position of the stacker roller if the paper opens when ejected or causes a jam.

1. Touch the adjustment key on the [Ready] screen.

2. Touch the (Stacker roller) key. The [Stacker Roller] screen is displayed.

3. Use the [+] / [-] keys to adjust the position. A smaller value moves the roller inward; a higher value moves it outward. A setting of [0] is used for cross-folding jams and slows the speed.

4. Touch the return key to save and exit.

Access the [Function Settings] screen from the [Ready] screen to adjust the following:

• Thick paper mode: For double folding B4 or larger, or thick paper (104.7 g/m² or more). Set a fast processing speed. Use only for thick paper.

• Thin paper mode: For thin, flimsy paper. Set a slow processing speed.

• Interval function: Suspends folding after a set number of sheets for a set period of time (3 to 30 seconds).

• Double-feed detection: Set to On (optical or ultrasonic sensor) or Off. When optical is enabled, a test fold is required to set the paper thickness. Test folding is not needed for the ultrasonic sensor.

• Detection: Turn on/off paper stack detection and automatic standard size detection.

• Initial Screen: Set which screen appears when the power is turned on (e.g., Ready, Basic Settings, Custom Fold).

• Idling: Set whether the machine stays in an idling state (conveyance drive running) when operation is paused to prevent stopping other operations.

• Tone: Turn the operational key sound (buzzer) on or off.

• mm/inch: Switch the unit of measurement for paper size and fold dimensions.

• LCD bright: Adjust the brightness of the LCD screen (1 to 5).

• Number of test sheets: Set the number of sheets for a test feed (1 to 3).

• Language: Change the display language on the touch panel.

• Power saving: Set a time (1 to 120 minutes) after which the LCD backlight will turn off automatically.

• Alarm (DF-999/DF-999A): Set a time (5 to 120 minutes) after which a buzzer will sound if the machine remains unused while powered on.

The DF HAND FEED KIT allows a maximum of three sheets to be folded together.

Applicable Paper and Staples

• Paper Size: A4, B5 (For EU) / LTR (For NA)

• Paper Thickness: 52.3 to 81.4 g/m²

• Number of Sheets: Max three sheets of fine quality short grain paper (64 g/m² or less), or two sheets of coated paper.

• Folding Modes: Single fold, Letter fold, Accordion-fold.

• Staples: Use a flat-type stapler (e.g., No. 10) so staples are stitched evenly. The stapled height should be 1.5mm or less.

Operation

1. Open the paper receiving tray and attach the auxiliary paper ejection guide.

2. Set the machine to [Manual Feed Mode] from the Function Settings screen.

3. Set the paper on the hand feed paper feed guide.

4. Set the auxiliary guide to the paper side, leaving a small clearance.

5. Insert a sheet of paper to perform a test fold.

6. Adjust for any misalignment as required.

7. Select your counter method (Count Up or Count Down).

8. Insert paper to start folding. Do not insert the next paper until the machine stops. If a jam occurs, press the paper ejection key to force eject.

CAUTION: Make sure you disconnect the power cord before cleaning. Do not use flammable sprays or solvents.

Cleaning Paper Feed Rings and Folding Rollers

1. Open the top cover.

2. For the Paper Feed Ring, clean it by hand with a cloth moistened with alcohol while rotating it.

3. For the Folding Roller, remove folding plate 1. Then, clean the roller with a cloth moistened with alcohol while rotating the jam correction knob.

Cleaning Sensors

If sensors are dirty, detection may not work properly. Use a non-flammable air duster. After using an air duster, wait about five minutes for condensation to evaporate.

• Paper feed timing/paper/double-feed sensors: Open the top cover and remove dust with an air duster.

• Paper ejection jam sensor (upper): Remove dust with an air duster.

• Paper ejection jam sensor (lower): Open the side cover, remove folding plate 2, and remove dust with an air duster or wipe with a dry cloth.

Cleaning LCD Touch Panel

Gently wipe the LCD touch panel with a dry cloth.

Cleaning Stacker Belt

Remove the auxiliary paper ejection guide. Wipe the stacker belt with a cloth moistened with alcohol while rotating it by hand.

Cleaning Paper Separator

If the paper separator is dirty, mis-feed or double-feed may occur. For cleaning of the paper separator, contact Duplo dealer.

Check the error code and follow the guide on the screen or refer to the table below. If the ‘C’ key is displayed, touch it to release the error. If not, follow the guide content.

Warning Errors

Error Code	Cause	Solution
U1000	The top cover is open.	Close the top cover.
U1300	The side cover is open.	Close the side cover after attaching folding plate 2 correctly.
U1500	Folding plate 1 is not attached.	Attach the folding plate 1 correctly.
U1602 (*1)	Test key is pressed but test feed was not performed for double feed detection.	Perform a test feed.
U2001	Paper is not stacked in the paper feed tray.	Load paper in the paper feed tray. Touch the C key to release.
U2005 (*1)	The direction of paper stacked is incorrect.	Load paper in the correct direction. Check paper size setting. Touch C key.
U2007 (*2)	The paper feed tray is not set.	Raise the paper feed tray. Touch the C key to release.

(*1) DF-999/DF-999A (*2) DF-990/DF-990A

Motor Errors

Error Code	Cause	Solution
E2002, E2003, E2005 (*)	Abnormal stack on the motor for raising/lowering paper feed plates.	Remove jammed paper and touch the C key to release.
E2220, E2221, E2400-E2402	Abnormal stack on a motor due to paper jamming.	Remove jammed paper and touch the C key to release.
E2409-E2412, E2419-E2422, E2429	Folding plate not attached properly, or motor for folding stopper not functioning.	Ensure plates are attached properly. Remove jammed paper and touch the C key.

(*) DF-999/DF-999A

Paper Jam & Other Errors

Error Code	Cause	Solution
J1000	Miss-feed on the paper feed tray.	Align the paper again.
J1001	Double-feed occurs at the paper feed section.	Remove the double-fed paper.
J1006, J3002, J6002	Paper jamming at various sections.	Remove the jammed paper.
E1903, E1904	Incorrect program or data is included.	Touch the C key to release the error.

Errors Requiring a Service Call

If the following codes are displayed, turn the power off and on. If the error is not cleared, contact a dealer: E1101, E1902, E4210, E4300, E4301, E4302, E5011, E5012, E5013, E5015, E5770.

CAUTION: Do not put fingers inside during operation. Open or close the top cover gently.

Jam at Paper Feed Ring

1. Open the top cover.

2. Slowly remove the jammed paper near the paper feed ring.

3. Close the top cover.

Jam at Folding Roller

1. Take out folding plate 1.

2. Open the side cover.

3. Take out folding plate 2.

4. Open the top cover.

5. Pull out the paper while rotating the jam correction knob.

6. Close the top cover.

7. Re-insert folding plates 1 and 2.

8. Close the side cover.

Jam at Folding Plate

Press the (folding plate paper ejection) key to forcibly eject paper from the plate. If this doesn’t work, clear the jam manually:

• For Folding Plate 1: Take out plate 1 and remove the jam.

• For Folding Plate 2: Open the side cover, take out plate 2, and remove the jam. If needed, open the top cover and rotate the jam correction knob.

Jam in Ejecting Section

Press and hold the (paper ejection) key. Paper is forcibly ejected as long as the key is held down.

Condition	Cause	Solution
Power is not turned on.	Power cord is not connected or power switch is off.	Connect the power cord. Turn on the power switch.
Machine does not start when the start key is pressed.	Paper is not stacked.	Stack paper on the paper feed tray.
	Paper has jammed.	Remove jammed paper.
	Top cover and side cover are open.	Close the covers which are open.
	Non-standard paper settings are incorrect.	Change the settings to match non-standard paper.
	Paper feed guide is off the detection area.	Secure the paper feed guide correctly.
	[D-Feed Detect] is on but test folding was not performed.	Perform test folding.
Paper is not folded at the normal folding position.	Folding plates 1 and 2 are not set properly. / Static electricity.	Set the folding plates properly. / Use a static removal spray and separate paper well.
Double-feed of paper has occurred.	Paper feed pressure is too high. / Separating pressure is too low. / Paper is sticking.	Decrease the paper feed pressure. Increase the separating pressure. Check that ink is dry and there is no static, then separate paper well.
Mis-feed of paper has occurred.	Paper feed pressure is too low. / Separating pressure is too high. / Paper is sticking.	Increase the paper feed pressure. Decrease the separating pressure. Check that ink is dry and there is no static, then separate paper well.
Folding misalignment (vertical length).	Processing speed was changed midway through operation.	Adjust the folding stopper positions of folding plates 1 and 2.
Folding misalignment (sides of paper).	Paper feed guides are not set properly. / Fixing screws are loose. / Paper is not cut properly.	Set the paper feed guides properly. Tighten the fixing screws. Correct the misalignment using the skew correction knob.
Continuous-feeding occurs with small paper.	Paper out of specifications. / Feed pressure too high or separating pressure too low.	Do not use paper outside specifications. Decrease feed pressure or increase separating pressure.
Single-folded thick paper jams at folding rollers.	Paper out of specifications. / Feed pressure too high. / Processing speed too slow.	Do not use paper outside specifications. Decrease feed pressure. Increase processing speed.

Item	Specification
Processing speed (Maximum)	260 Sheets/min (for DF-999/DF-999A and DF-990/DF-990A)
Folding form	Single fold, Double fold, Irregular accordion fold, Letter fold, Accordion fold, Gate fold, Specified cross fold, Other deformed folding
Folding speed adjustment	5 speed: 242 Sheets/min
	6 speed: 260 Sheets/min

Notes:

(*1) Based on fine quality paper 81.4 g/m², A4 size, single fold.

(*2) The type of folding modes available may be limited depending on paper quality and size.

(*3) For Gate fold, short grain paper of 64 g/m² or less cannot be used, and paper length must be 432 mm or less.

(*4) For Cross fold, fine quality paper 52.3 to 104.7 g/m².

(*5) Maximum folded length is 230.0 mm.