Symptom |
Analysis of causes |
Examination method |
Remedying method |
Notes |
Ink can't be normally jetted from the single injection cup (which is caused by the damage of the injection cup) |
The protective membrane on the injection cup is broken or fall off |
Examine the color of the surface of the injection hole. If it appears red, then it indicates that the membrane has fallen off |
Replace injection cup |
Normally some narrow traces are printed on the image |
Injection cup is clogged with the printing ink |
Employ the syringe to inject the cleaning solution into the injection cup. If the ink can't flow out of the hole, then hole has been clogged with the printing ink |
Replace injection cup |
|
The circuit inside the injection cup is damaged |
Check whether or not make patching board plugged in when the injection cup is live. |
Replace injection cup |
If dust and the printing ink are found on the circuit board, use the absolute alcohol to clean and dry |
Whether the liquid is left on the signal socket and the short circuit is caused |
Check whether dust and printing ink exist on the circuit board. Because after a long period, dust and ink will accumulate on the circuit board and if met with the humid air, they will lead to short circuit. |
The injection cup is out of service due to the wear and tear. |
Check the service year |
Replace injection cup |
|
Ink can't be normally jetted from the single injection cup (which isn't caused by the damage of the injection cup) |
The voltage of the injection cup is below 15 V |
Use multimeter to examine and measure the voltage of the injection cup |
Adjust the voltage to a higher position |
The voltage should be adjusted to be 20 V or so. |
The breakdown of the injection cup |
swap the data line of the injection cup with other cups (notice: keep the line on the patching board of the injection cup unchanged) If the ink is still not jetted, then it can be understood that injection cup goes wrong |
Replace injection cup |
|
The breakdown of data line or the patching board of the injection cup |
Swap the data line of the injection cup with other cups (notice: keep the line on the patching board of the injection cup also changed) If the ink is still not jetted, then it can be understood that signal line or the patching board of the injection cup goes wrong. Please reconfirm the breakdown. |
Replace the date line or the patching board of the injection cup |
|
The data line of the injection cup isn't well connected |
Check whether the data line is well plugged into or not |
Get the data line well plugged into |
|
The breakdown of ink-supplying system |
Examine the ink pipe and the whole ink-supplying system and check whether there is lack of ink or leakage of ink pipe |
Restore the ink-supplying system |
|
The breakdown of the image card |
If the reasons mentioned above are excluded, the probable reason is the damage of the image card. |
Replace the image card |
|
No ink is jetted from any injection cup |
Power problems |
Examine the voltage 12V, 24 V (DC) of the control respectively |
Restore the power supply |
12V:
11.75V-12.25V
24V:
23.2V-25V |
The board of the spraying vehicle is broken |
|
Change the board of the spraying vehicle |
|
The breakdown of PCI image card |
|
Replace the PCI image card |
|
The decoder is broken or not well connected |
Check whether the decoder is not completely installed. |
Reinstall or replace the decoder |
|
Optical fiber wire is broken or not well connected |
Check whether the optical fiber wire is well connected or not |
Reconnect or replace the optical fiber wire |
|
The breakdown of the service card makes ink unable to reach the secondary inkpot |
Check whether the signal is transmitted to service card or not |
Replace the service card |
|
Disconnection |
The temperature is extremely low |
Check whether the temperature is extremely low |
Increase the temperature |
The temperature should be kept within the range of 18 o C-28 o C |
The voltage of the injection cup is abnormal. |
Employ the multimeter to examine the voltage of injection cup |
Adjust the voltage of injection cup |
Adjust the voltage to about 20V ten minutes before starting the machine |
Injection cup goes wrong |
Check whether injection cup is clogged or not. |
Use the cleaning solution to clean the injection cup |
|
The ink is of poor quality |
If the reasons above are excluded, the probable reason is the poor quality of the ink |
Change the ink |
Users are suggested to use the ink recommended by the manufacturer. |
