SPT510-35PL X 4/6 Printheads Calibration and Maintenance

SPT510-35PL X 4/6 Printheads Calibration and Maintenance

SPT510-35PL

X 4/6 Printheads

Calibration and Maintenance

23 rd

Feb., 2011

Version : V2.0

1

Contents

Chapter 1:Computer Requirement .................................... 3

Chapter 2:Installation..............................................3

Chapter 3:Charateristic.............................................5

Chapter 4:Software Installtion......................................6

Chapter 5:Software Interface........................................8

Chapter 6:Software Calibration......................................9

Chapter 7:Other Functions and Parameters ..........................19

Chapter 8:Maintenance..............................................23

Chapter 9:Troubleshoot.............................................27

Chapter 10:Output Chart............................................29

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Chapter 1: Computer Requirement

1) Basic requirement: z CPU: 2.0 GHz or higher z Memory: 1Gb or higher z Hard disk: 80 Gb (recommend 20Gb free space) z Mother board: USB connection equipped z Operating system: Microsoft Windows (2000, XP)

2) Recommendatory requirement: z CPU: 3.0 GHz or higher z Memory: 2 Gb or higher z Hard disk: 200 Gb or higher (NTFS format) z Mother board: USB connection equipped z Operating system: Microsoft Windows (2000, XP)

NOTICE: Suggest user format your hard disk into 2 partitions (NTFS). The first partition is used for installing

OS and other software, the second partition is used to save pictures and work files.

Chapter 2: Installation

1) Move the packing box to the working site and avoid strong shaking.

2) Disassemble the wooden packing box from top to bottom. Check whether the parts are complete or not according to the packing list.

3) Lift the printer out by a forklift, and move it to the installation site.

4) Check if the printer is level.

5) Get rid of all the parts that stabilize the carriage holder, and install all the spare parts.

6) Move the carriage to the right of printer, then move back to the left manually. During this process, checks if there are abnormal resistance and carefully inspect the belt & the encoder sensor are situated in proper position.

7) Ground the printer. The grounded voltage shouldn’t be more than 0.3V, and the grounded resistance should be less than 3Ω.

8) Connect the USB cable between printer and computer. Check if the wires and data cables are plugged in properly.

9) Install the output and the rip software.

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10) Turn on the printer, and keep your hand on the emergency button for turning off the printer if problem happens suddenly.

11) Send a file to print to test the condition of the printer.

12) Clean the whole ink supply system with special solvent. Then empty the ink sub-tanks, and repeat the step twice. At last, empty the remained solvent in the ink supply tubes through ink sub-tanks.

13) Fill the main tank up with ink. Then empty the ink sub-tanks, and repeat the step twice, in order to ensure there is no mixture of ink and solvent in the ink supply system.

14) Dip the aluminum tube connector into the solvent and clean them, in order to ensure no any sundries exist.

15) Turn off the printer. Take the black washer out from the white cap on the top of the damper, and then place the washer in the aluminous cap. (Figure 1) Stabilize the printhead with screws. Connect the tube, and tighten the aluminous cap at the ink incoming part on the top of the damper. Finally, connect the data cable. washer

Figure 1

Attention A: When assemble the aluminous cap, you should screw on the aluminous cap perpendicularly avoiding to damage the screw thread of the damper.

Attention B: When assemble new printhead, it’s unnecessary that you flush the printhead

additionally with solvent. It’s because there isn’t protective fluid in printhead nozzles.

16) Fill the printhead with ink by using positive pressure, then wipe the ink droplet on the surface of printhead plate with sponge stick.

17) Print nozzle checking and observe the condition of printheads. It is recommended to keep a copy of the test for reference in the future.

18) Printhead alignment.

19) Start to Print.

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Chapter 3: Characteristics

„

SPT510_35pl x 6/4;

„ Resolution: 1080\720\360\180 DPI;

„ Colors:6/4 colors ;

„ Setting of multi-printing;

„ Automatically flash jetting:Automatically clean printheads by flash jetting during printing;

„ Home flash jet: Prevent nozzles of printheads block while not in printing state; distance from image;

„ Able to align printheads, step difference ,and bi-direction difference;

„ Able to print uni-direction or bi-direction and mirror ;

„ Edge feather: Lighten pass line;

„ Cleaning System: Setting of auto-cleaning with Solvent;

„ Individual Positive Pressure Cleaning System: Clean with ink for each color, and avoid the waste of ink;

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Chapter 4: Software Installation

This software consist of printer driver, printing adjustment and picture printing functions. Running this software requires a certain hardware and software condition. Herein, you are going to be introduced the operating system environment required, software and hardware configuration and software installation

Please follow the following steps to install the software. below.

2) Then follow the above instruction, click “Next”, the following interface will show up, you have to enter the user and company name as well.

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3) Click “Next”, installation path is available to choose.

Choose the directory to install.

4) By clicking “Next”, the installation progress will appear, then click “Confirm”, “configuration file options” dialog box will appear as shown below. Then, choose the

SPT5106_35pl.ini

file which corresponding to the print head.

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Chapter 5: Software Interface

1) Main interface in:

,double-click the icon to open the software. Let us take a look at the

Find the following shortcut icon main interface first.

Main Manu

Operation tools bar

Printer Condition

Movement button

Printing job list and printing record

b) Main Manu

Preview

Image information

Condition bar

Through the operation toolbar, we can speed up the implementation of commands which are commonly used in the software. There are various kinds of adjustment buttons, their functions are the same as they are found in the corresponding menu.

From the left to the right , "Function Description", "Send Pulse", "Feedback Pulse", "Server IP Address", and "Available Buffer Space" respectively.

Function Description: Displays the current printer status

Send/Feedback pulses: Display the Send/Feedback pulses as the carriage move so that user can judge the problem according to the data.

Server IP address: Display Local IP address,the IP address of the printer is 127.0.0.1 when online printing is taken place.

Available Buffer Space:Buffer zone is a temporary place for saving the file at times of net printing. When the buffer space is smaller than 500M, it turns RED to warn the user.

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Chapter 6: Software Calibration

1) Printer initialization (New installed software has to be initialize according to the following instruction)

① Machine Length Test

② Y Motor Test

③ X Motor Test

④ X Motor Speed Setting

1.1 Double-click the icon to open the software, then select the “Test” menu.

1.2 Machine Total Length: Select "Test" ---> "Machine Length Test"

Click "Test Begin" to start measuring the machine length and calculating the X motor gear ratio. The carriage will move back and forth twice, and the following dialog will show up after finish testing.

Then,click “OK” to finish testing.

1. 3 Y motor gear ratio setting: "Test" --> "Y motor Test"

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First of all, we marked a sign (1) on a certain place of the printer platform, then click “Test Begin”, the media will be fed a bit, then mark a sign (2) on the same position. Use a ruler to measure the distance between (1) and (2) as shown below. Enter the actual measurement results into “Move Actual Distance”, then click

"Count", the following dialog will show up.

(2

(1

(1

1.4 X Motor Test: Select "Test" --> "X Motor Test"

"Close" is not allowed during testing

This step is mainly testing the status of the motor movement, the carriage will move back and forth 20 times as you click on "Test ", The test result will be provided in the following dialog box as it is finished.

Click "Close" to finish the test.

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1.5 X Motor Speed Setting: Select"Test" --> "X Motor Speed Setting"

There are 180,240,360 dpi modes .

Click"Test", system will send 1 second pulse.

360 MODE

"Normal speed" and "High speed" are available.

“Actual Speed”

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Carriage Speed/Printhead

Frequence

Note: Speed reference

240 mode: High Speed = 847 mm/s

Normal = 684 mm/s

360 mode: High Speed = 564 mm/s

Normal = 456 mm/s

NoteAfter entering the actual speed, have to click "Save" and then click "Test" so that the data

could be saved.

(After step 1.5, clean the tube, and then install the ink and printhead)

2) Alignment

2.1 Printhead installation

(1)Tilt the printhead in angle and then push the printhead all the way in. Prevent printhead from scratching.

Printhead must install under the o-ring!

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(2)Pull the printhead all the way to the front

(3)Push the printhead to the right side

NoteInstall every printhead like above steps

2.2 Status: After install the printhead, print the nozzle status. Observe the printhead order and position, and the condition of the printhead.

“Status”shortcut on the main interface:

Click “Status” to print the following diagram:

2.3 HVert: Printhead angle alignment. Observe the physical alignment of printheads.

This step is not aligned well which will affect the following adjustment

Turn off the feather function when doing the alignment

“Printhead Vertical”Shortcut on the main interface:

Click “HVert”, the following diagram will be printed:

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Align printhead physically. (K for example):

The first straight line is the reference, then check the second straight line. Both line should be connected, if not, the printhead holder need to be adjusted. Please check the following cases:

Case 1:Both line in same vertical position;

Second Pass

First Pass

No need to adjust!

Case 2:Printheads offset to left side:

Second Pass

First Pass

Adjust Procedure: a) Loosen screws at the printhead holder

Case 3:Printheads offset to right side:

Second Pass

First Pass b) Turn the screw at clockwise direction.

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Adjust Procedure: a)Loosen the screw at the printhead holder b) Turn the screw at anti-clockwise direction.

Note: Tighten the four screws at the printhead holder when finish adjustment and before

print the Hvert test diagram. Keep adjust until the first pass and second pass face each other.

When the vertical adjustment is done, normally the horizontal alignment is well, if a printhead's horizontal alignment is not aligned, then have to do the adjustment. The following diagram shows how to adjust the horizontal position. let K be the reference, C as example:

K C

K C

Adjustment NG!

Move the C printhead toward. Adjustment OK

2.4 H align(Head alignment): The purpose of H align adjustment is printing the different color in same position,in order to print a prefect print out.

First,Adjust "180 MODE " mode . Enter Setting->option, printer, choice "180 MODE" at X direction mode.

180 MODE

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Click Save, then choice "Head Adjustment" and select "Display Standard Preference"

Based parameter

Head Adjustment

Display Standard

Preference

Click Save Param then click OK

Check the based parameter,the correct data should be

"180 MODE

K-C

K-M

=

=

248

496

K-Y = 744

K-Lc = 992

K-Lm = 1240

"

Reset Param:

While confused with setup of more parameters, please click "Reset Parameters" to recover the last saved parameters.

"H Align" shortcut key is shown in the following:

The diagram of "H Align" is shown in the following:

Print to Left

Print to right

"0"is the reference. At the "0" point, each color should overlapped on the black border. If not, look for the rectangle which is overlapped, and input the corresponding value into the "Head Adjustment".!

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If "0"is not overlapped, we should correct it at the software, enter "Setting\\Option", shown as the below picture:

Y Direction Offset (K is standard), check the value accumulate that value with original value.

Choose

“Head

Adjustment”

! with adjusting picture,

Printing Direction that value with original value.

"X Direction

Offset", check the value with adjusting picture, accumulate

Please print the adjusting picture again after inputting and saving the parameters. Check if the color line are overlapped on "0"!

Please click the "Save Parameters" after input values. After 180 mode is aligned, click the auto adjust to get

the parameter for 240 mode and 360 mode.

First,finish adjusting "180 MODE" . Enter Setting->option, printer, choose " 360 MODE”

360 MODE

"360 MODE" .

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Click "Save", then choice "Head Adjustment"

"Head

Adjustment"

Click "auto adjust" ,then the parameter of "360 MODE" will automatically calculated.

2.5 Bidir (Bi-direction adjustment)

"Bidir" shortcut is shown as the below picture:

Bi-directional adjustment ensures the printout will not offset to left or right. While the printing speed change, bi-directional have to adjust.

Print the below adjusting picture by clicking the button of "Bi-direction"

3

2

1

0

OK NG

-1

-2 -3

-4

At the point "0", lines should face each other. If the two lines at "0" does not align, find the value which is aligned, and input the corresponding value into "Setting\\Option" -> "Bi-direction", shown as the below picture:

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Choose

“Bi-dire ction”

Repeat the above steps until the lines at "0" facing each other.! to adjust by software. Enter "Setting\\Option", shown as the below picture:

Choose "Step"

The media can be renamed according to different media, and the step offset can be saved according to different medias.

Input the value here, and the parameters are accumulated.

Then click “Save

Parameters" after inputting.

2.6 Step Adjustment

The location for button of "Step" on the menu of shortcut is shown as the below picture:

Print the below adjusting picture by clicking the button of "Step"

Add -4

Make the two lines at "0" as the standard. If the two lines at "0" are not in complete superposition, we need

Pass select Sep adjustment, input the value here, and the parameters are accumulated to adjust step

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Print the step adjusting picture again after inputting and saving the parameters.

OK!

While printing after completing adjustment, there will be a warp for step according to different media. So the actual step should be adjusted during printing!

RecommendWhile adjusting the step, turn off the feather function. If the printing result is not good,

increase the feather value until the printing become prefect

The adjustment of software has been completed!

Chapter 7: Other Functions and Parameters

1)

1. Network Printing Setup (enter "Setting\\Setting"

)

Default Pass Number of Net

Setup of Network Printing

Printing.

Check the below dialog box for adjusting ink limit will be shown up if click the button of "Start",

The ink density can be reduced according to

Select Inverse and Mirror Print

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Setup of Buffer Path

The printing area can be chosen by dragging the mouse.

2. Printhead Voltage Setup (enter "Setting\\Printhead Setting")

Adjustment of Printhead

Voltage Offset (lower the printhead voltage offset if the voltage is too high and cause printhead clogging)

Select group of printhead depend on actual use.

Actual voltage

Actual Temperature

The changed parameters will take effect after clicking the "Setup".

3)

Printer Setup (enter "Setting\\Option")

Choose "Printer"

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Input Printhead

Default Voltage

Printer setup details

3.1 Printing Mode

There are two options for uni-direction and bi-direction.

3.2 X Direction Mode

This is an option which is used for adjusting printheads alignment. It is recommended that the printheads alignment is adjusted under 180DDPI after installing printheads. For printing pictures of other resolutions, first choose the corresponding resolution under "X Direction Mode", then click "Auto Adjust by 180DPI" and

"Save Parameters" under "Uni-color" and "Head Adjustment". The software will automatically create the corresponding adjusting parameters for printing. During actual printing, the adjusting parameters probably need to be adjusted again.

Remark: The option is only available for adjusting printhead alignment. For printing pictures, it is unnecessary to choose the corresponding resolution due to the software can automatically get the corresponding adjusting parameters for printing .

3.3 Media Movement after Printing

This is an option which is used for setting the movement direction and distance(mm) of media after completing print.

3.4 Flash Jetting Setting

There are three options, 1) (Home) Frequency(Hz): The setup for flash jetting frequency at home with noprinting

(The changed flash jetting frequency will be activated after doing the operation of "Save Parameters" and

"Home"). 2) (Clean) Frequency(Hz): The setup for flash jetting frequency at home during printing. 3) Num of Time(s): The setup of flash jetting time (unit: second).

3.5 Cleaning Option

There are Two options, 1) No Cleaning and 2)Flash Jetting Cleaning. The "Flash Jetting Frequency" in 3.4 will be activated after choosing the "Flash Jetting Cleaning". The "Pass" can be set between 0-255Pass.

3.6 Color Bar Setting

Active color bar while printing in order to protect printhead's printing performance, to avoid unwanted result(such as clogging) cause by temperature, humidity and color of the printout. Color bar setting include 3 parts, which are print color car while printing, position of color bar, width of color bar and distance from printout; "Pos" have 4 option, which are "no color bar", "in the left", "in the right" and "both side of the picture", "Width" and "Distance" is not available when choose no color bar; "Width" is setup for the width of the whole color bar, software will allocated the width of 4 and 6 color's color bar automatically; "Distance" is setup for distance between the color bar and the printout. All width and distance unit is mm.

3.7 Feather

Feather setting, enable or disable feather while printing. Customers select how many points of feather according to the need, to blur the pass line.

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4) Import Config/Export Config

After setting all of parameters, use import/export function to backup and reuse the config file in order to avoid lose the data.:

Enter "File\\Export Config", choose "Export Congif" to export software parameters to ini file:

We can directly import the configuration file saved before after reinstalling the software or parameters losing.

Avoid setting the parameters again (enter "File\\Import Config").

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Chapter 8: Maintenance

1 Normal Cleaning

1.1 Positive Pressure Cleaning

Press the cleaning button, and then use sponge stick or soft fabric to wipe the surface of the printhead.

Warning: Using the material other than sponge stick or soft fabric to wipe the printhead may risk

damaging nozzles.

2 Cleaning procedures for nozzle clogging

2.1 Cleaning procedure

z

Disconnect the tube connector at the tube of the subtank and printhead. Wait until the ink almost drains away, and then connect the tube to the solvent tube. Press both of the flush buttons to clean the printhead with solvent. Stop until the solvent becomes clear nearly. z

Use tube cover to seal the ink incoming tube for the printhead. Use fresh wrap to cover the nozzle surface. Leave it for 12 hours.

z

Take the fresh wrap off. Disconnect the tube cover and wait until the solvent is almost removed. Connect the tube to the subtank, and fill the printhead with ink.

3 Carriage Bearing and Steel Rail Maintenance

Carriage slides on four steel rail and eight bearings, make sure steel plates and bearing are clean and lubricity.

Ⅰ.

Wipe a thin layer of grease on steel plates to maintain cleanliness and grease everyday before and after usage.

Ⅱ.

Make sure the carriage bearing are clean.

Figure1

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1)

Please print the "Nozzles Checking" to make sure all the nozzles are firing fine before switching off the printer. Then switch off the printer.

2)

Prepare solvent , PE film, and 6 pcs of nonwoven fabric (7cm x 2cm) (Figure 2)

Figure2

3)

Move the carriage away from home

(Figure 3),

Place waste tank cap at the properly position

(Figure 4);

Figure3 Figure4

4)

Place a 60 cm PE film on the cap, and then place the non-woven fabric which is moistened by solvent on top of the PE film

(Figure5), move the carriage back to home.

(Figure6)

Figure5 Figure6

5)

Move the carriage to the left side, fix the PE film. Finish the daily maintenance.(Figure7)

Figure7

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5 Short term shut down (3~7 days)

1)Disconnect the tube connector for the tube from the Subtank to the printhead. Wait until the ink finishes dropping, and then, connect the tube to the solvent tube. Press both of the flush buttons to clean the printhead with solvent. Stop until the solvent becomes clear nearly.

2)Use tube cover to seal the ink incoming tube for the printhead. Use fresh wrap to cover the nozzle surface. Then, push the carriage all the way to the left to seal printheads by the cap.

6 Long term shut down (More than a week)

1) Clean the whole ink supply system by solvent.

2) Disconnect the tube connector for the tube from the Subtank to the printhead. Wait until the solvent finishes dropping almost. Use tube cover to seal the ink incoming tube for the printhead. Use fresh wrap to cover the nozzle surface. Then, push the carriage all the way to the left to seal printheads by the cap.

AttentionFor keeping the ink supply system clean, please replace the filter every 4 months.

7 Cleaning procedures for nozzle clogging

1) Disconnect the tube connector for the tube from the Subtank to the printhead. Wait until the ink finishes dropping almost, and then, connect the tube to the solvent tube. Press both of the flush buttons to clean the printhead with solvent. Stop when the solvent becomes clear.

2) Use tube cover to seal the ink incoming tube for the printhead. Use fresh wrap to cover the nozzle surface. Leave it for 12 hours.

3) Take the fresh wrap off. Disconnect the tube cover and wait until the solvent is removed almost. Connect the tube to the subtank, and fill the printhead with ink.

When printhead needed to be taken out for maintenance, there are long-term and short-term

maintenance. Short-term is within one month, and long term is within two months. After two

months, printhead need to be installed to the printer and check the nozzle firing again. Maintain the printhead again after checking. Please refer to the following procedure for used printhead short term and long term storage maintenance .

The storage condition is shown in the following: a) Room temp: 5 - 40 ℃ b) Humidity: 10- 85% c) Prevent direct sunlight

8 Used printhead short term storage maintenance

Clean the printhead with solvent, and leave some solvent in the printhead. Remove the printhead together with the tube. Place the non-woven fabric, which is already submerged into solvent, onto the nozzle plate. Wrap the printhead by cling film. Install the printhead onto the original base.

9 Long term used printhead storage maintenance (SPT510-35pl)

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9.1 Print a nozzle check

9.2 Clean the printhead by solvent.

9 . 3 Empty the solvent in the printhead.

9 . 4 Wipe the solvent surrounding the printhead by non-woven fabric. Do not scratch the nozzle plate.

Step 1 Step 2 Step 3

Cap

Cling

Film

Tighten the cap. Make sure the washer is in place.

Step 4

Cut the cling film into a piece about 30cm x 30cm. Do not make the film wrinkle.

Wrap the surface of the nozzle by the cling film.。

Step 5 Step 6

Make sure there are no bubbles and wrinkles.

Gently remove the air between the film and the surface of nozzles.

Seal the printhead on both sides.

Wrap the printhead from the edge of the film. Pull the film tightly to seal the printhead as much as possible

Step 7 Step 8 Step 9

Wrap the film on the top of the printhead.

Install the printehad stand.

Stand

Step 10 Step 11

Put the printhead into the orginal plastic box.

Put the plastic box into the paper box

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Caution:

(1)Remove the remaining solvent in the printhead totally.

(2)Tighten the cap properly:

If the washer is in the proper position, the cap can be tighten easily.

Do not force to tighten the cap when the position of the washer is not proper.

(3)Wrap the printhead carefully.

Chapter 9: Troubleshoot

After turning on the printer, the 12V, 24V, and 35V LED on the connecting board are lit on. And also, the

D4 LED on the main board is lit on. D1 and D2 LED are lit on when connecting the printer to the computer by USB cable.

After system initialization, the carriage will move back to the home position slowly. The carriage will stop after detect the home magnet. The system is ready to print. At the same time, printhead start flash jetting. Open the printmon software, the carriage will move back to home position again.

1) After turning on the printer, carriage move back to home normally. The interface of printmon

becomes grey a) Check whether the driver is installed properly. “EPOWER USB DEVICES” should be shown in the device manager. b) Check whether the USB cable is defective, or connected improperly. c) Check whether the main board is defective

2) Carriage is not moving after turning on the printer a) Check whether the 12V LED on the connecting board and D4 LED on the main board are lit on. If those LED are not lit on, check the 12V input. b) Check whether the home sensor is defective, or connected improperly. c) Check whether the 40P connector on the connecting board and the main board is plugged in properly, or defective. d) Check whether the signal cable of the x motor driver is plugged in properly, or defective. e) Check the connection between the x motor and the encoder

3) Carriage is moving to opposite direction after turning on the printer a) Check whether the signal cable of the x motor driver is plugged in properly, or defective. b) Check the connection between the x motor and the encoder

4) Ink pump keep working a) Check whether the floating sensor in the subtank is working properly. b) Check whether the connection of the 18P flat cable between the connecting board and the printhead board. c) Check whether the corresponding LED for this specific color pump is on. If the LED is on, please change the connecting board.

5) Pump is not working, and the alarm is ON a) Check whether the 24V power supply is normal. b) Check whether the pump is working properly. c) Check whether the connection of the 18P flat cable between the connecting board and the printhead board. d) Check whether the floating sensor in the subtank is working properly. e) Check whether the corresponding LED for this specific color pump is on. If the LED is on, please change the connecting board.

6) Flash jetting is normal when turning on. After printing for awhile, does not flash jetting, but

printing normally

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a) Check whether the encoder is clean, or scratched, or not installed properly. b) The config file is lost. Recalculate the machine length.

7) The interface of the software becomes grey. The movement cannot be controlled. Extra solid

color is printed a) Check whether the USB cable is loosened or defective.

(Recommended to use the cable with better anti-interruption)

8) Positioning error during printing a) Check whether the 12V is normal b) Check whether the X motor belt and the gear is loosened or damaged. c) Check the X motor d) Check whether the encoder is dirty or scratched. e) Check whether the encoder sensor is dirty or defective f) Check the connection of the 18P and 16P flat cable between the connecting board and the printhead board.

(Keep a distance from strong magnetic field. Prevent using instable input power. Equip a UPS and stabilizer)

9) Interruption during printing a) Check whether 12v is normal. b) Check the connection of the 14P flat cable between the connecting board and the printhead board. c) Check the connection of the cable from DB15 on the connecting board to the servo driver. d) Check whether the USB cable is normal. e) Check whether the grounding is well.

10) Reset to home is normal. Carriage is moving, but not printing a) Check the connection of the wire for the encoder. b) Check the connection of the cable from DB15 on the connecting board to the X servo driver.

11) Interruption when printing the printhead status. Ink jetting on the printing platform when calculating the machine length:

a) Check whether the encoder sensor is connected properly. b) Check the connection of the 18P flat cable.

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Chapter 10: Output Chart

Output Chart

Printhead SPT510-35PL

Number of prnthead 4/6 Heads

Printing Mode

Output Quantity

240X720 4pass Draft

240X1080 6pass Standard

360X1080 6pass Quality

Output(m

2

/h)

39

27

18

720X720 8pass High Quality 14

*The above data is obtained when printing speed is set to high, value may vary in different computer*

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