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TDS EJ-640 Maintenance Manual

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EJ-640
Maintenance Guide
How to Replace Ink Cartridges
Out-of-ink Warnings
If using 4 Colors (CMYK)
If one ink cartridge of the same color runs out, the machine continues printing using the other
ink cartridge. When all ink cartridges of the same color run out, printing pauses and a warning
beep sounds.
If using 7 Colors (CMYKLcLmLk)
When an ink cartridge runs out, printing pauses (unless the factory default settings have been
changed), and a warning beep sounds.

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Summary of Contents for TDS EJ-640

  • Page 1 EJ-640 Maintenance Guide How to Replace Ink Cartridges Out-of-ink Warnings If using 4 Colors (CMYK) If one ink cartridge of the same color runs out, the machine continues printing using the other ink cartridge. When all ink cartridges of the same color run out, printing pauses and a warning beep sounds.

  • Page 2: How To Replace Ink Cartridges

    EJ-640 Maintenance Guide Note: You can check the approximate amount of ink remaining on the screen so as to replace ink cartridges before they run out. How to Replace Ink Cartridges When ink runs out, a warning beep sounds and printing pauses (unless the factory default settings have been changed.) Pull out the empty cartridge and insert a new one.

  • Page 3: Maintenance That Should Be Performed Daily

    EJ-640 Maintenance Guide Note: Never store ink, cleaning liquid, or discharged fluid in any of the following locations. Any location exposed to an open flame. Any location where high temperatures may occur. Near bleach or any other such oxidizing agent or explosive material.
  • Page 4 EJ-640 Maintenance Guide Note: Before you detach the drain bottle, be sure to wait for the screen to display “EMPTY DRAIN BOTTLE.” Failing to do so may cause discharged fluid to flow out of the machine and spill onto your hands or the floor and cause a...
  • Page 5 EJ-640 Maintenance Guide Store discharged fluid in a location not exposed to direct sunlight. When temporarily storing discharged fluid in the included drain bottle, keep the drain bottle out of direct sunlight. Otherwise the discharged fluid may harden, the waste bottle may become unusable, or the waste bottle may be deteriorated, the discharge fluid may leak.
  • Page 6 EJ-640 Maintenance Guide Cleaning Note: Never use solvent such as gasoline, alcohol, or thinner to perform cleaning. Doing so may cause fire. Note: Before attempting cleaning, switch off the sub power and wait until the platen and dryer cool (approximately 30 minutes). Sudden movement of the machine may cause injury, or hot components may cause burns.
  • Page 7 EJ-640 Maintenance Guide Care and Maintenance of the Print Heads Care of the print heads is essential to ensuring optimal printing at all times. There are maintenance tasks that should be performed daily and those that should be performed periodically.

  • Page 8: When Normal Cleaning Is Not Effective

    EJ-640 Maintenance Guide Periodic Care and Maintenance Medium cleaning/powerful cleaning. Perform medium cleaning or powerful cleaning when problems such as dot drop-out are not corrected after performing normal cleaning. Manual cleaning Perform manual cleaning periodically according to your frequency of use.
  • Page 9 EJ-640 Maintenance Guide...

  • Page 10: Powerful Cleaning

    EJ-640 Maintenance Guide Powerful Cleaning’ Procedure When powerful cleaning is not effective If problems such as dot drop-out persist even after you have performed powerful cleaning several times, perform “manual cleaning.” Such cleaning can be effective when carried out periodically, according to the frequency of use.

  • Page 11: Maintenance That Should Be Performed Once A Month Or More

    EJ-640 Maintenance Guide Procedure If uneven color issues are not resolved by light choke cleaning, refresh the subtanks. Maintenance That Should Be Performed Once a Month or More...
  • Page 12 EJ-640 Maintenance Guide When Manual Cleaning Becomes Necessary Perform Manual Cleaning Once a Month or More To keep the stable output condition at all times, perform cleaning once a month or more. Manual cleaning takes approximately 10 minutes. Manual Cleaning Is Recommended When the Following Symptoms Occur It is recommended to perform manual cleaning when any of the symptoms given below occur and cannot be solved by automatic cleaning functions such as normal cleaning.

  • Page 13: Manual Cleaning

    EJ-640 Maintenance Guide Manual Cleaning Note: Be sure to perform operations as specified by the instructions, and never touch any area not specified in the instructions. Sudden movement of the machine may cause injury. 1. Enter manual cleaning mode.
  • Page 14 EJ-640 Maintenance Guide 2. Clean the wipers using a cleaning stick. Note: Clean the two wipers one at a time.
  • Page 15 EJ-640 Maintenance Guide...
  • Page 16 EJ-640 Maintenance Guide 3. Clean the area around the print heads with the cleaning stick.
  • Page 17 EJ-640 Maintenance Guide...
  • Page 18 EJ-640 Maintenance Guide 4. Reattach the left and right covers, and then end the manual cleaning mode. 5. Perform a printing test to verify the results of the procedure. Perform a printing test to check the results. Perform cleaning using the machines cleaning feature...

  • Page 19: Maintenance That Should Be Performed Once Every Six Months Or More

    EJ-640 Maintenance Guide Maintenance That Should Be Performed Once every Six Months or More. Refreshing Subtanks (REFRESH SUBTANKS) Refresh the subtanks once every six months to resolve issues with ink components precipitating in the subtanks. If this procedure is not performed once every six months, print quality may be adversely effected, e.g.

  • Page 20: When Problems Such As Dot Drop-Out Are Not Fixed

    EJ-640 Maintenance Guide Failing to follow this procedure may cause discharged fluid to flow out of the machine and spill, soiling your hands or the floor. When Problems such as Dot Drop-out are Not Fixed When Problems such as Dot Drop-out are Not Fixed...
  • Page 21 EJ-640 Maintenance Guide Procedure...

  • Page 22: Replacing Consumable Parts

    EJ-640 Maintenance Guide Replacing Consumable Parts Replacing the Wipers The wipers are components that are used when cleaning the print heads. When the screen displays a message like the one shown below, it is time to replace the items. There are two wipers.
  • Page 23 EJ-640 Maintenance Guide 1. Enter the wiper replacement menu.
  • Page 24 EJ-640 Maintenance Guide 2. Replace the wipers.

  • Page 25: Replacing The Felt Wipers

    EJ-640 Maintenance Guide 4. Perform a printing test to verify the results of the procedure. Perform a printing test to check the results. Replacing the Felt Wipers The felt wipers are parts used for cleaning the print heads. When the screen displays a message like the one shown below, it is time to replace the items.
  • Page 26 EJ-640 Maintenance Guide Sudden movement of the machine may cause injury. 2. Replace the felt wipers.

  • Page 27: Replacing The Separating Knife

    EJ-640 Maintenance Guide 4. Perform a printing test to verify the results of the procedure. Perform a printing test to verify the results. Replacing the Separating Knife If the separating knife becomes dull, replace it with the included replacement knife.
  • Page 28 EJ-640 Maintenance Guide Note: Never touch the tip of the knife. Doing so may result in injury. 1. Enter the knife replacement menu.
  • Page 29 EJ-640 Maintenance Guide 2. Replace the separating knife 3. Exit the knife replacement menu.

  • Page 30: Alarm Feature

    EJ-640 Maintenance Guide When Not in Use for a Prolonged Period Keep Performing Maintenance Switch on the power once a month Switch on the sub power once a month. When you turn on the power, the machine automatically performs operations such as those to keep the print heads from drying out.
  • Page 31 EJ-640 Maintenance Guide...

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