Valves, except for one exhaust valve is special, and then the rest are universal. The exhaust valve is a white plastic block. The difference between the exhaust valve and the other valves is the shaft core, and the neck length of the exhaust valve’s axis is longer:   Then we assemble the valve:   We can assemble all the valves before installing them. Some machines placed for too long, the valve will stick, you can take it apart and soak it, but because the valve has an O-ring on it, so can not carry out ultrasonic cleaning, otherwise easy to break and deform. This is the O-ring of the base, which is not easily broken:   However, this O-ring is relatively fine, if the ultrasonic heating cleaning or wait until it is too long by dry ink corrosion is more severe, it will be easy to break and then leak ink, then we need to replace the O-ring. If ink leakage occurs, it is usually here that ink leaks rather than the base:   Both the A-Series and the A plus Series have six valves with the same name. But their valves are in a different order because their ink shunt blocks are different.

When replacing the filter, the inkjet printing should be switched off.   If you want to replace the main filter, you need to remove the main filter from the bezel. First loosen the two screws a little:   Then take it down and the main filter is here:   Then remove the screws:   Gently pull it out:   Let’s take out the main filter and replace it with a new installation:   After the replacement is complete, put the main filter into the set, install the screws and tighten the screws, the main filter is replaced:   Then fix it to the bezel:   Let’s see how to replace the online filter, first we pull out the module:   Then, this one is the online filter:   If we change the filter, first we will spin off both sides of the filter:   Then we find a new filter to replace it, install the connectors on both sides and tighten them:   The online filter replacement is complete.   Then we’ll put the module back in place:

Part of the ink wire enters the recycling tank and is then recycled through the recycling tube:   And then most of it goes through this blue ink return tube:   Then go back to this position: This position includes the return of the recovery tube, which is then eventually passed by the vacuum pump.   This is a scale bucket, mainly used to measure viscosity:   This is the viscometer:   There is a calibration tube in the middle of the viscosity meter, and then into the main ink tank, it flows down, ink flow through the main ink tank to the viscometer, from the low level to the high level, and then through this time to calculate the viscosity, and then to the high level, the viscosity valve will immediately open, will be pumped through the vacuum pump of the viscometer ink to pump away.   The viscosity is calculated by flowing this time, and if a solvent needs to be added, this is the solvent valve: The solvent valve opens and injects the solvent into the ink path.   This is the viscosity valve:   The above one is the cleaning valve:   Here’s the recycling valve:   If the viscosity valve measures a high viscosity value, the solvent addition valve will open, it will be directly into the ink into the solvent, and then dilute the ink.   The main one is a vacuum pump: But it has three tubes, all three of which are a

If it reports a high-voltage fault, let’s first look at whether there is ink on the high-pressure deflection board, if there is ink, we use cleaning liquid to wash it clean, then blow-dry it, and then turn it on to try:   If there is a recycling failure, we must first consider whether the nozzle is blocked, if the nozzle is blocked, we have to clean the nozzle, because it is not the same as the A plus machine, the A plus machine has the function of cleaning nozzle, this A-series machine does not have this function. Under normal circumstances, we can do this: if the machine is turned on or off normally, it is also feasible for us to clean the nozzle in this way:   Because if you’re normally turning on and off normally, it automatically cleans the nozzle, and then we can wash the nozzle with cleaning fluid.   If the ink line is not entering the recycling tank due to a deviation of the ink line and then reported a recycling failure, then we have to adjust the screws.   This is a fixed screw, whether you want to adjust the ink wire to the left/right or forward/backward, first loose this screw:   Loosen the fixing screw, and then adjust the screw, which adjusts the left and right of the ink wire:   This screw adjusts the front and back of the ink wire:   We have to look at the actual situation, to see whether

We’ll start by checking the charging tank, which has ink on it, and we’ll mainly see if there’s any ink in this gap:   If there is black ink, we will wash it clean with cleaning liquid, wash it clean and blow dry it:   Charging failure, generally is the ink point split is not good. We click on the “print head” and then look at the “ink point separation time”, we can see that if the ink point is normal split, ink point split time is there, small character printer is generally more than 3,000, the lowest is 3000.   If there is no ink point split time, we can adjust the modulation voltage, turn it up a bit, let it become more than 3,000, it will not report charging failure.

Take a look at how the machine will supply ink for the first time after it is received.   Let’s turn on the machine first. If we have just received the machine, we will put the ink in this position:   Then add a bottle of solvent to it:   We enter the primary password SERVICE on the interface, then click on the ink system, then click on the filter exhaust in the ink system. Be sure to exhaust the air the first time you use it. Put the ink and solvent in place and drain the filter for about 5 minutes.  

In the power-on interface, then press the wrench key, enter the primary password, the primary password is SERVICE.   Then press and hold the green key not to release, and then press the wrench key: Then enter the advanced password MAIGRET and press the OK key.   Select the manual operation and go to the manual operation interface. Then pull out the ink system and remove the main filter and buffer:   Then short connect them respectively:   Then we take the main ink tank off:   Then put it in two empty bottles like this:   Pour 500ml of cleaning fluid here:   Then we click Clean Printer, and the ink will drain here:   After we have drained the ink from the line, we then pour the drained ink out, then continue to pour the cleaning fluid into it, let it be cleaned, and then drain the ink:   Let’s drain the ink from the buffer, drain the ink, wash it and install it, and the main filter will be the same:   You can click Clean printer again, and then we take it out like this and let it drain all the remaining liquid from the line:   Until no liquid is discharged, we click Give Up:   Then we pour the waste liquid out, install the main filter and buffer, install a new ink cartridge, and the cleaning is complete:   If you clean the A200 machine, you need to drain the ink in the line, wash it

7500 machine cleaning and maintenance operation Ink discharge Find an empty bottle, remove the plug of the ink core ink discharge pipe, put the ink discharge pipe into the empty bottle, drain the ink, and then install the plug     Remove the main filter and buffer, drain the ink inside, and then install the main filter and buffer.     Cleaning machine Open the ink filling cover of the ink core, inject about 1L cleaning solution into the ink core, then open the nozzle cover, find the cleaning nozzle throat in the system setting, press the OK key and select Yes. At this time, the inkjet printer starts to clean the machine and cycle the machine for about 20 minutes.     Waste liquid discharge Discharge the waste liquid in the ink core (refer to step 1), and discharge the waste liquid of the main filter and buffer (refer to step 2) Clean the machine again (refer to step 3) Discharge waste liquid (refer to step 1) Clean the machine again (refer to step 3) Discharge waste liquid (refer to step 1) Replace the main filter and ink supply filter, and install the new filter.     Inject about 1L ink into the ink core, install the ink core injection cover, and then empty the ink air in the system     Clean the residual ink on the print head, start the machine and complete the maintenance.

Let’s assemble the ink shunt block. First, we clean the ink shunt block with cleaning fluid. We have to check whether each hole is unblocked. If the machine is not used for a long time, that is to say, it has been placed for a year or half a year, and then it is not used, we will remove all its accessories, and then replace all the pipes with new ones, which will be more stable.   Now the white module has been soaked for about one or two days, and then we install it now. We use the cleaning pot to check whether each hole is unobstructed:   This is the cleaning valve:   Solvent valve:   Viscosity valve:   Exhaust valve, also called recovery valve:   Then, the ink supply valve:   Flushing valve:   This is a tube of the buffer:   The ink supply pipe is inserted here: After soaking, we need to check whether each hole is unobstructed and whether it is completely unobstructed.   This is the ink diversion block. Solenoid valve and pipe have been inserted on it:   We find the screws and install the ink distributor:   Installation of ink splitter block completed:

First of all, the ink should come from the pipe on this side of the main ink tank:   Then enter the pump:   Then from the pump to the main filter:   This is the ink supply valve:   After coming out of the main filter, it goes to the corresponding thick pipe under the ink supply valve, and then comes in and passes through the buffer:   After coming out of the buffer, enter the red ink supply pipe:   Then, the ink supply pipe passes through the ink supply filter and then enters the nozzle:   If it enters the print head, the blue tube is returned, the other one is recycled, and the two are returned.   This is the main flow of ink.   Then, look at this pressure sensor:   Then, a tube of the viscometer is directly connected to the main ink tank:   The other tube of the viscometer is under the corresponding viscosity valve:   Where does the ink in the viscosity valve come from? It comes directly from the ink path of the ink supply, that is, the ink behind the main filter. As soon as the viscosity valve is opened, the ink will enter the viscometer, and then the viscometer will top the small beads to the highest point and then fall. How long will it take to return to the lowest point, and then measure this value.