HP designjet l65500 Manuale Di Servizio

 Troubleshooting

189

There are different ways to refill the intermediate tanks, the recommended method is shown below, but 

there is also a method described here which should only be performed if the previous method did not 

work.

1.

Troubleshoot the problem using the suggestion here: 

a.

Is the tube of air bent or unplugged, check the connection from the intermediate tank to the air 

bottle, if there are bends or kinks in the tube, straighten them out. 

b.

Check to see if the Intermediate tank is correctly connected. 

2.

Here is the process to force a refill of this intermediate tank: 

a.

Run the entry ‘4.18 Int Tanks Ink’, and check that the ink level of the empty intermediate tanks is 

displayed as empty (0%). If it is incorrectly set, change the values of the empty intermediate 

tank, and set them to 0%. 

b.

From the diagnostic boot mode, select ‘4.13 Force filling I Tanks’.

c.

If nothing happens, it could be because there is insufficient ink in the ink cartridge (which can 

happen when filling the intermediate tank twice, one after the over). 

In this case, run the diagnostic entry ‘4.19 Int Tanks time refill’ 

d.

If nothing happens, then there is a last way to force the ink level, but this is a fully manual way, 

which has to be followed carefully: 

1.

First check that there is enough ink in the ink cartridge to fill the corresponding intermedi-

ate tank (by just weighing the cartridge). 

2.

The fill the tanks it is possible to group them by up to 3. Here are the 3 that should be 

grouped (remember that each intermediate tank is marked x y, with the following possi-

ble values x: 1.6 pointing a color (1:K, 2:Y, 3:C, 4:M, 5:Lm, 6:Lc) and y:1 or 2 pointing 

to an air pressure system (1 pointing to the front air pressure (named 0 on the ISM 

board), and 2 pointing to the air pressure (named 1 on the ISM board). There up to 3 

cartridges which can be filled has to be part: 

- within front or back group (intermediate tanks 1y, 2y or 3y, and 4y, 5y or 6y) 

- of the same air pressure system (x1 together or x2 together). 

3.

For example, the intermediate tank 32 has to be filled (Cyan intermediate tank, can be 

filled in with the intermediate 12 and 22) 

4.

UNPLUG ALL the intermediate tanks that you do not want to refill. Keep connected only 

the intermediate tank 32 (and possibly the 22 and 12). 

5.

Make sure that ONLY the intermediate tank that you want to refill is connected (only the 

32 in the example above, and cannot be more than 3 in any case). 

6.

MAKE SURE THAT ALL THE CARTRIDGES ARE CORRECTLY CONNECTED (or else you 

might have air entering inside the cartridge tube, resulting with the front panel display-

ing that the cartridges are empty when they are not). 

7.

From diagnostic menu, run the entry ‘4.15.1 Entry Front Valves’, and select the Cyan elec-

tro-valve to open 

8.

Leave the electro-valves open for around 10 minutes. DO NOT DISCONNECT ANY 

CARTRIDGES DURING THIS OPERATION, EVEN IF THE CARTRIDGE IS EMPTY (first stop 

the test). 

9.

Run the entry ‘4.18 Int Tanks Ink’, for the intermediate tank that you have refilled, set to 

80% of ink level. 

10.

Switch off the printer 

11.

Check that the intermediate tank has some ink inside (no need to be full).