Konica 7155 Main Error Code : 74 ,pr...

There are a few code 74's, and Konica has a bulletins on them.

DESCRIPTION: Code 74-0 from the E-mail alert system. SOLUTION ID: 154045
SOLUTION: CAUSE: Paper remains at finisher main tray paper exit opening.

DESCRIPTION: Code 74-1 from the E-mail alert system. SOLUTION ID: 154055
SOLUTION: CAUSE: Booklet tray is full.
SOLUTION: Remove the paper from bottom exit of the finisher.

DESCRIPTION: Code 74-4 from the E-mail alert system. SOLUTION ID: 154058
SOLUTION: CAUSE: Paper remains inside finisher.
SOLUTION: Please remove copies from the finisher.

DESCRIPTION: Code 74-5 from the E-mail alert system. SOLUTION ID: 154059
SOLUTION: CAUSE: Punch trash box is full.
SOLUTION: Trash basket of punching unit is full. Please empty trash basket.

DESCRIPTION: Code 74-6 from the E-mail alert system. SOLUTION ID: 154066
SOLUTION: CAUSE: Sub-tray (first tray) is full.
SOLUTION: Sub tray is full. Please remove paper.

I'm guessing it just means the finisher thinks it's full, and wants you to take the copies / prints out.