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.