# Adjustments and Check Items Purpose

If the new ID is not registered after replacing the head, the head ID of the older head is used and the proper drive voltage cannot be set. The following symptoms may occur. The following symptoms may occur.

• Since the amount of ink droplets is not proper, the color and density abnormalities are found on prints.
• Since the amount of ink droplets turns to be unstable, dot missing or misaligned dots occur while printing or flushing.

Adjust the platen gap of the CR Unit using the thickness gauge.

When the PG is out of standards, the following symptoms may occur.

• Too high platen gap case: Unstable ink droplet paths or misaligned dots occur, and it causes low printing quality such as banding, printing misalignment, or grainy image.

• Too narrow platen gap case: The head rubs paper.

Move the Print Head to Replacement Position

Head Inclination Check & Adjustment (CR direction)

Corrects inclination of the Print Head in the CR direction.
[Auto adjustment] An adjustment pattern is printed and the Ink Mark Sensor scans the pattern. Based on the scanned result, a number of steps to move the cam for the adjustment is displayed. Turn the cam the number of steps to correct the head inclination.
[Manual adjustment] Print an adjustment pattern, and visually check the pattern to see if the adjustment is needed. To correct the head inclination, turn the cam.

Scale loupe (When adjusting manually)

Head Slant Check & Adjustment (PF direction)

Corrects slant of the Print Head in the PF direction.
[Auto adjustment] An adjustment pattern is printed and the Ink Mark Sensor scans the pattern. Based on the scanned result, a number of steps to move the lever for the adjustment is displayed. Move the lever the number of steps to correct the head slant.
[Manual adjustment] Print an adjustment pattern, and visually check the pattern to see if the adjustment is needed. To correct the head slant, move the lever.

When the belt tension is out of standards, the following symptoms may occur.

• Belt tension is high: The life of the belt will be shortened. High load applied to the carriage causes frequent wait control over the carriage movements to prevent overheating. If the tension is too high, the shaft of the motor leans and the brush in the motor becomes worn, and will result in CR overload error.

• Belt tension is low:  The belt teeth slip and the carriage swings. The correction by the active damper does not work and the bands (vertical bands) occur near the side edges of paper.

Reduces misalignment of ink droplets fired to paper while printing outward caused by dispersion (parts size, waveform, PG, and so on).

[Auto adjustment] An adjustment pattern is printed and the Ink Mark Sensor scans the pattern. Based on the scanned result, appropriate correction value is calculated, and is automatically inputted to the printer.
[Manual adjustment] Print an adjustment pattern, and visually check the pattern to see if the adjustment is needed. To correct the head inclination, turn the cam.

If this adjustment is not made, print quality problems such as misaligned lines, grainy image, banding may occur.

Reduces misalignment of ink droplets fired to paper caused by dispersion (parts size, waveform, PG, and so on).
[Auto adjustment] An adjustment pattern is printed and the Ink Mark Sensor scans the pattern. Based on the scanned result, appropriate correction value is calculated, and is automatically inputted to the printer.
[Manual adjustment] Print an adjustment pattern, visually select the proper correction value, and input it to the service program.

PGPP250 16 inches or more

If Ruled Line Deviation Adjustment is not performed after head replacement, the following symptoms may occur.

• Print image graininess is poor
• Line printing deviation
• Printed image distortion

Cut sheet paper feed: PGPP250 16 inches

Roll paper feeding

• 44 inch machine: PGPP250 44 inches
• 36 inch machine: PGPP250 36 inches
• 24 inch machine: PGPP250 24 inches

• Checks if the ink mark sensor has any trouble/connection failure.
• Executes Ink Mark Sensor Position Auto Correction (pattern detecting position correction). Corrects the detecting result of the print pattern in the paper feeding direction and the carriage movement direction.

If this adjustment is not made, the estimation of the motor temperature cannot be made properly and may cause the following symptoms.

• Even though there is no problem with the motor temperature, the printer pauses during printing because it judges that the motor is in high-temperature state.
• Despite the motor is in a high temperature state, a lower motor temperature is estimated and the printer does not stop. This may cause the printer to malfunction.

Measures the ground resistance of the Print Head with Ohmmeter to check if the Print Head is grounded without any problem.
Confirm that the printer is off.

If not grounded properly, the Print Head may be broken.

Ink System Related Adjustments

Unlock the Wiper from Wiper Cleaner

Move the pump to the Rubber Wiper release position of the Pump Cap Unit from the CR lock release position.

When replacing the Pump Cap Unit, the Cleaner Wiper cannot be removed, and screws under the Cleaner Wiper cannot be accessed.

Pump Cap Unit Measurement & Auto Adjustment

The Pump Motor is designed to stop when the amount of heat generation (motor temperature) during motor operation reaches a predetermined limit. The amount of heat generation is estimated based on the electrical characteristics of the motor, which vary by motor and power supply of the printer. Therefore, to get the motor control to work properly, the electrical characteristics values of the motor need to be measured and stored in the memory on the Main Board.

If this adjustment is not made, the estimation of the motor temperature cannot be made properly and may cause the following symptoms.

• Even though there is no problem with the motor temperature, the printer pauses during printing because it judges that the motor is in high-temperature state.
• Despite the motor is in a high temperature state, a lower motor temperature is estimated and the printer does not stop. This may cause the printer to malfunction.

Specify the power and the color from the Service Program and execute the head cleaning.

Nozzle clogging is not solved and the printing cannot be executed properly.

Perform Initial Ink Charge from the service program.

Turn the flag which is set to the printer when detected ink leakage off.
*Make sure to escalate information in specified route when ink leakage occurred.

Ink Leak Error (SC0014BD) does not stop.

Inspection mode/ Repair mode

Reduce the pressure in the ink flow paths.  Doing this prevents ink leakage that can occur when removing the Print Head or other ink related parts/units.

From the Service Program, fill the supply tubes with ink. Perform the supply tube ink filling after replacing the following parts.

• Ink Tube Assy
• Ink Cartridge Holder Assy
• Ink Bifurcated Flow Channel Unit

From the Service Program, fill the Head / Self Sealing Valve Assy with ink. Perform Head / Self Sealing Valve Assy ink filling when replacing the following parts.

• Print Head
• Self Sealing Valve Assy

Discharge ink from the ink flow paths.

If ink is not discharged when instructed to do so before removing parts or units, ink may leak from the printer and contaminate surroundings.

When leaving the printer unused for a long period, this prevents ink in the Print Head from getting solidified. Use the cleaning cartridge for service and the Service Program.

If the printer is left unused for a long period without doing this after discharging ink, the ink left in the ink flow paths may get solidified. Once the ink becomes solidified, charging new ink may become impossible or dot missing may occur.

• Turn on the flag to carry out Initial Ink Charge when the printer's power is turned back on.
• When replacing the Main Board, if NVRAM cannot be backed up, turn off the flag.

• During refurbishment, Initial Ink Charge cannot be carried out.
• When replacing the Main Board (NVRAM backup is NG), Initial Ink Charge is performed.

Release the PF Driven Roller

When the belt tension is out of standards, the following symptoms may occur.

• Belt tension is high: The life of the belt will be shortened. High load applied to the carriage causes frequent wait control over the carriage movements to prevent overheating. If the tension is too high, the shaft of the motor leans and the brush in the motor becomes worn, and will result in motor overload error.

• Belt tension is low: The belt teeth slip and paper cannot be fed properly.

Matte Paper A4
Plain paper A3/Tabloid (11×17 inch)

PF Motor Measurement & Auto Adjustment

If this adjustment is not made, the estimation of the motor temperature cannot be made properly and may cause the following symptoms.

• Even though there is no problem with the motor temperature, the printer pauses during printing because it judges that the motor is in high-temperature state.
• Despite the motor is in a high temperature state, a lower motor temperature is estimated and the printer does not stop. This may cause the printer to malfunction.

Sub PF Motor Measurement & Auto Adjustment

Cutter Motor Life Span Measurement & Auto Adjustment

The Paper Eject Driven Roller Motor is designed to stop when the amount of heat generation (motor temperature) during motor operation reaches a predetermined limit. The amount of heat generation is estimated based on the electrical characteristics of the motor, which vary by motor and power supply of the printer. Therefore, to get the motor control to work properly, the electrical characteristics values of the motor need to be measured and stored in the memory on the Main Board. In addition, check that the eject driven operation is performed correctly to check whether paper eject driven nipping/releasing using the sensor works correctly.

If this adjustment is not made, the estimation of the heat generation based on the electrical characteristics cannot be made properly and may cause the following symptoms.

• Even though there is no problem with the motor temperature, the printer pauses during printing because it judges that the motor is in high-temperature state.
• Despite the motor actually being in the high temperature state, the printer continues operating in an unsafe condition because it judges that the motor is in the low-temperature state (this may cause a failure).

Also, if the Paper Eject Driven Roller Shaft Unit or Paper Eject Star Wheel Roller Unit is not installed in the correct position, it may cause the following symptoms.

• Paper jam
• Paper Eject Star Wheel Roller Unit and CR rub against each other, resulting in rubber residue getting on print results.
• Print image quality problem

Apply a specified tension to the Paper Eject Release Roller Belt. Measure the tension of the belt using the sonic tensimeter to check if it is within standards. Adjust the belt tension if it is outside the standard value.

When the belt tension is out of standards, the following symptoms may occur.
Belt tension is high: The life of the belt will be shortened. High load applied to the carriage causes frequent wait control over the carriage movements to prevent overheating. If the tension is too high, the shaft of the motor leans and the brush in the motor becomes worn, and will result in motor overload error.
Belt tension is low: The belt teeth slip and paper cannot be fed properly.

The Shutter Motor is designed to stop when the amount of heat generation (motor temperature) during motor operation reaches a predetermined limit. The amount of heat generation is estimated based on the electrical characteristics of the motor, which vary by motor and power supply of the printer. Therefore, to get the motor control to work properly, the electrical characteristics values of the motor need to be measured and stored in the memory on the Main Board.

If this adjustment is not made, the estimation of the motor temperature cannot be made properly and may cause the following symptoms.

• Even though there is no problem with the motor temperature, the printer pauses during printing because it judges that the motor is in high-temperature state.
• Despite the motor actually being in the high temperature state, the printer continues operating in an unsafe condition because it judges that the motor is in the low-temperature state (this may cause a failure).

Also, if the Shaft Motor is not installed in the correct position, it may cause the following symptoms because the suction chamber will be unable to open/close properly.

• When using media of 30 inches or less: Paper lifting and paper jams occur due to insufficient media suction power.

Adjust the detection sensitivity of the PE sensor so that it can recognize the paper inserted in the printer correctly. Let the sensor detect the standard sheet (translucent media) which is hard to recognize to check the result on the control panel. (By using the media which is hard to recognize, paper can be recognized regardless of the environmental condition or the media)

Serial Number Input

• Check the serial number and the USB ID currently set to the printer. Write the correct information as needed. Write the correct information as needed.
• Sets the USB ID automatically.

• If the serial number is not input or a wrong number is set, it makes service management (such as the print/NVRAM) harder.
• USB recognition error occurs.

NVRAM Data Backup & Restore

Option SSD/PS3 Unit S/N information Write to NVRAM

Reset the serial number of the optional SSD unit. Execute when the "Option version error" does not fix.

"Option version error" is resolved by resetting the serial number of the optional SSD unit written in NVRAM.

Check the connection with the optional HDD. Carry this out after replacing the Main Board.

Maintenance

Sensor Check 1 (IS Related/CR Related/Other)

Displays the state of the sensor.