Know How to Reset Samsung ML-1640, ML-1641, ML-1645 laserjet printer

Know How to Reset Samsung ML-1640, ML-1641, ML-1645 laserjet printer

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Printer Samsung ML-1640, ML-1641, ML-1645 is an very good laser printer in very less cost. But the problem is that, when we refill the cartridge with toner it does'nt print
giving red flashing led and will ask for changing the toner cartridge(New Toner Cartridge Is Costlier So, you can save money by simple resetting your
printer)

How to Reset Samsung ML-1640, ML-1641, ML-1645 laserjet printer? Do the steps below..

1. Open the back cover of the printer by unscrew 2 nuts.

2. There are 2 PCBs inside, which one is the Power supply circuit board and other is main printer board i.e., green color. 
3. Find a small eprom 93C66 IC (8 pin) in Green Printer Board.

4. Connect PIN 1 and 4 of the IC 93C66 with a small cable and solder it.

5. Then make sure all the cables are plugged back, and turn on the printer Samsung ML-1640, ML-1641, ML-1645.

6. Wait a few moments until the Samsung ML-1640, ML-1641, ML-1645 Printer calibration is complete and the lights flash green.
7. After a light green flame, turn off the printer.
8. Disconnect the small cable that connects pin 1 and 4 IC 93C66.
 9. Close the printer Samsung ML-1640, ML-1641, ML-1645, do not forget to attach the screw.

 10. SamsungML-1640, ML-1641, ML-1645 printer is ready for use again.