• Code: 49
• Description: PWM value of the black LED out of the specified range.
• Causes: • Ink empty sensor PCB • Hook switch PCB • Main PCB

• Code: 4A
• Description: Ink cartridge load error detected when the power was applied.
• Causes: • Ink cartridges (Were they loaded when the power was first applied after replacement of the main PCB?) • Main PCB • CR base ASSY

• Code: 4B
• Description: Abnormal carriage travel speed detected when the power was applied.
• Causes: • Encoder strip (Any stains or scratches? Hooked correctly?) • Purge unit • Flushing box • CR base ASSY • Carriage ASSY • Main PCB • Ink empty sensor PCB

• Code: 4C
• Description: Head voltage error.
• Causes: • Print head unit • Main PCB • Power supply PCB

• Code: 50
• Description: The purge cam HP switch does not come ON or go OFF even after the purge cam has been driven by the specified number of pulses.
• Causes: • Purge unit • Purge gear frame • CR base ASSY • Paper feed motor • 1st-bin sensor PCB • Main PCB

• Code: 51
• Description: The purge cam HP switch sticks to ON in the initialization sequence.
• Causes:

• Code: 52
• Description: At the time of purge operation, the carriage has not stopped in the purge position.
• Causes:

• Code: 53
• Description: The purge cam HP switch has come ON when the carriage was in the wipe position.
• Causes: