• Code: 17
• Description: TX MOTOR does not operate.
• Causes: • Check the operation of the document sensor of OPE PBA. • Check the operation of TX Motor. 1 Check the control signals of U18- 105-110. 2 Check input signals and driving output of U23 and U24.
• Remedy: • If defective, replace the sensor. • 1 If control signals are not made when the other functions are normal, replace the main PBA 2 If driving output is defective when the other functions are normal, replace U23 and U24.

• Code: 18
• Description: Paper Jam
• Causes: • Check sheet feeder and ejector. • Check the operation of LF motor. • Check paper exit sensor.
• Remedy: • Get rid of jammed paper. • Refer to LF motor does not operate. • If the sensor senses paper exit when it operates normally, replace the main PBA.

• Code: 19
• Description: Document Jam
• Causes: • Check document feeder. • Check the operation of TX motor. 1 Check the control signals of U18- 105-110. 2 Check the input signals and driving output of U23 and U24.
• Remedy: • Remove jammed documents and insert it again. • 1 If control signals are not made when other functions are normal, replace the main PBA 2 If driving output is defective when input signals are normal, replace U23 and U24.

• Code: 20
• Description: No Paper
• Causes: • Paper Empty? • U18-48 is HIGH? (+4V or over)
• Remedy: • Feed paper. • If high, replace the paper empty sensor. If low, replace the main PBA.

• Code: 21
• Description: No Document
• Causes: • No document? • Check the document sensor of OPE PBA.
• Remedy: • Insert documents. • If high, replace the document sensor. If low, replace the OPE PBA.

• Code: 22
• Description: No Cartridge
• Causes: • Check if ink cartridge is installed. • Check contacted part of the head. • Check head checking circuit and driver.: Check U16-8,9,10,128,154,156, U18-103 control signals and head data.
• Remedy: • Insert ink cartridge. • Clean it. • Replace the main PBA.

• Code: 23
• Description: Bad Cartridge
• Causes: • Check if ink cartridge is defective. • Check the output level of U22-1.
• Remedy: • Replace ink cartridge. • If low, replace the main PBA.

• Code: 24
• Description: Ink low
• Causes: • Check the amount of ink.
• Remedy: • Replace ink cartridge using cartridge key.