SERVICE MANUAL

SERVICE MANUAL

CadJet T-200 Service Manual

Cleaning Procedures

Always turn the printer OFF, remove the power cord and the interface cable before cleaning the printer. An electrical shock hazard may be present if these procedures are not followed.

External Cleaning

CAUTION

Do not use abrasive cleansers of any sort on the surfaces of the printer. Damage to the surface may result.

The exterior surfaces of the printer may be cleaned with a soft cloth which has been dampened. For more persistent stains, a small amount of liquid detergent may be used. Cleaning intervals are determined by the environment in which the printer is used.

Slide Shaft Cleaning

CAUTION

Use only isopropyl alcohol on the slide shaft of the printer.

Damage to the stainless steel slide shaft may result if cleaned with water and not completely dried off.

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CadJet T-200 Service Manual

Printer problems can be caused by an accumulation of dirt or other contamination on the slide shaft. This contamination may lead to drag on the carriage. Extreme drag results in a “carriage axis failure” fault and will stop the carriage motion. These problems may be eliminated by maintaining and cleaning the slide shaft at intervals determined by the environmental conditions. Do not use any lubrication.

To clean the slide shaft:

1. Turn the printer OFF. Disconnect the power cord and interface cable.

2. Raise the printer lid.

3. Moisten a clean cloth or paper wipe with isopropyl alcohol.

4. Wipe the length of the slide shaft with the moistened cloth or wipe.

5. Manually move the carriage assembly from side to side.

6. Wipe the shaft again to remove any deposits left from the carriage.

7. Close the cover and reconnect the power cord and interface cable, turn the printer ON and perform the PRIME procedure.

Be sure that the carriage moves freely on the slide shaft.

Service Station Cleaning

Ink and dust may build up on the service station, resulting in contamination which may smear the prints. The service station is cleaned as follows:

1. Turn the printer OFF. Disconnect the power cord and interface cable.

2. Raise the printer lid.

3. Carefully move the carriage toward the center of the printer.

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CadJet T-200 Service Manual

4. Using a cotton swab dampened with distilled water, wipe the seals and the rubber wiper in the service station until no more ink residue or dust can be removed.

5. With a dry swab, wipe all moisture from the seals and wipers.

6. Close the lid and reconnect the power cord and interface cable.

7. If the service station is filling with ink or very dirty it can be removed for cleaning. To remove, pull the tab on the right side of the service station and lift out. Replacement of the pads in the service station are recommended at this time. Wash, dry thoroughly and replace by placing the left side in first then pushing down on the right side until the tab locks it in place.

Linear Encoder Strip Cleaning

Clean the linear encoder strip weekly or as necessary to remove any buildup of debris. Distilled water or isopropyl alcohol may be used. You may notice that it tends to fog the encoder strip; however, no detrimental effect has been observed in the field.

To clean the Encoder Strip:

1. Disconnect the power cord and interface cable.

2. Slightly dampen a cotton swab with distilled water or isopropyl alcohol and wipe along the length of the encoder strip on both sides.

3. Reconnect the power cord and interface cable.

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CadJet T-200 Service Manual

Figure 3-1. Encoder Strip Cleaning.

Cartridge Dimples Cleaning

CARTRIDGE

DIMPLE

AREA

Figure 3-2. Cartridge Dimple Region.

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CadJet T-200 Service Manual

The cartridge dimple area can easily be contaminated by oils and dirt on fingers and hands or ink spilled onto them. This causes the cartridges to not receive some of the electrical signals for a proper firing of the jets.

This can be seen as a misfiring of the cartridge.

NOTE

Care should be used when handling the cartridges. Avoid touching the cartridges on the dimple area or on the inkjet holes on the bottom. The oils and dirt on fingers and hands can contaminate the area and result in misfiring of the inkjets.

Clean the cartridge dimple area by gently dabbing the area with a lint free cloth or cotton swab saturated with isopropyl alcohol.

Be sure to clean the yellow cartridge because it is not readily apparent that it is dirty. The yellow ink is hard to see and could be overlooked.

Flex Cable Contact Cleaning

Figure 3-3. Flex Cable Contacts.

FLEX CABLE

CONTACTS

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CadJet T-200 Service Manual

Cleaning the flex cable contact area is very important due to the ease of which this area can become dirty. The flex for the yellow cartridge is deceiving because it is not readily apparent that it is dirty. This also causes the cartridges to not receive all of the electrical signals for a proper firing of the jets. This can be seen as a misfiring of the cartridge.

NOTE

Care should be used when handling the flex cable contact area. Avoid touching the contact area because the oils on your skin can contaminate the area and result in misfiring of the inkjets.

Clean the flex cable contacts by gently dabbing the area with a cotton swab soaked with isopropyl alcohol.

Clean and Inspect Stepper Motor Gears

The stepper motor gears can become dirty and after time if not cleaned up, it could cause wide banding in the print. This will reduce the quality of the intended output. Clean the motor gears with a stiff brush to knock off any debris. A cotton swab soaked isopropyl alcohol can be used to remove any ink that may have accumulated on the gears.

Clean and Inspect MPWA

Foreign material on the MPWA could short out electrical signals being developed on the MPWA and cause erroneous prints or even damage to the MPWA. All electrical circuits should be free of foreign material, especially those materials with conductive properties.

Clean the MPWA by blowing the objects away or gently brush them aside with a soft brush if required.

Inspect the MPWA for any damage to the board, connections, or any of the components on the board. Replace board if inspection reveals any damage or flaws that could effect the function of the MPWA.

Maintenance 3-7

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