I HAVE KONICA MINOLTA 7145 IT OFTEN APPEAR F-26-1.WHATS THE PROBLEM OF THE UNIT.

SOURCE: Minolta Konica 7145 error code 26-3

NOT SURE BUT YOU CAN GET SERVICE MANUAL WITH ERROR CODES DEFINITIONS www.precisionroller.com type in your model

SOURCE: error code f35-3 on konica minolta 7145 copier

How to reset failure codes (F34, F35, F36). To reset failure codes, perform the following: 1. Enter the 25 mode (turn the machine ON, while pressing the 2 and 5 keys). 2. Select [1. software SW settings]. 3. Using the arrows on the left of the touchscreen scroll to DIP SW 3. 4. Using the middle arrows scroll to BIT 1. 5. On the touchscreen select OFF (0). 6. Power the copier OFF/ON.

SOURCE: Konica 7145 F-51-2 Error

Code F51-2 at start-up.
Description:
Code F51-2 at start-up.
Solution:
CAUSE: Code F51-2 may be caused by a failed M11 fixing motor. To determine whether or not the motor has failed, use this procedure:
1. Enter the 47 mode (I/O check mode).
2. Input "40".
3. Input multicode "0". If the M11 motor turns, it is good; if it does not turn, the motor has failed.

SOLUTION: Replace the M11 motor (p/n 56AA80072 for 7222/7228/7235 and p/n 56GA73430 for 7145) if it has failed.

hope that help!!!

SOURCE: Call Service Konica Minolta 7145

press 25 togehter and power on your machine you will see another screen press software switches 3-0 make it off .off main power and on it again

SOURCE: Reset Chip on Konica Minolta 8031 Imaging Unit

I can provide you with a programmer to reset the chip. They are only about $500-$700. Still interested?