When using AMS lite, you may encounter problems that AMS lite is not detected by the printer. It can be divided into the following two situations:
If you encounter either of the above conditions, you can refer to the methods in this article for troubleshooting.
After turning on the printer, measure whether the output voltage of the two pins of the printer's 4-pin port is approximately 24V, as shown in the following figure. The printer has two 4-pin ports. If neither interface outputs 24V, it indicates that there is a problem with the printer. You can contact the customer support team and provide specific measurement values for further analysis.
Please unplug the 4-pin cable connecting the AMS lite to the printer, and power off the AMS lite for more than 1 minute. Then, measure the resistance value of the 4-pin cable of the AMS lite. If the following measurement results are abnormal, it indicates that the AMS mainboard is faulty:
The 4-PIN cable connector is shown as follows:
The normal resistance values between each two points shown in the figure above are shown in the table below:
Resistance |
R1 |
R2 |
R3 |
R4 |
R5 |
R6 |
Value |
320Ω |
130KΩ |
2.7KΩ |
130KΩ |
2.7KΩ |
130KΩ |
Refer to Step 2 to measure the resistance values of the AMS lite through the 4-pin cable. If the measured resistance is abnormal, the AMS mainboard is faulty, resulting in the AMS communication loss.
If these resistance values are normal, the printer's mainboard should be faulty and need to be replaced.