Hitachi UX Twin Nozzle Service Manual page 251

6.2.4 Ink Replenishment Time-out
Ink Replenishment
Time-out
Press the Reset key to clear the
fault and execute "Ink refill".
Then restart the printer.
Does the "Replenishment
Time-out" fault recur?
Yes
Does the MV2 (Replenishment
valve) operate on the solenoid
valve/pump test screen?
Yes
①
Does the ink flow into the main
Yes ink tank from the ink reservoir
when Pump.MV2 and MV6 are
operated on the solenoid
valve/pump test screen?
No
Does the ink flow into the main
ink tank from the ink reservoir
when the CV assembly on the
tip of the tube connection block
of the ink reservoir is removed
and Pump,MV2 and MV4 are
operated on the solenoid
valve/pump test screen?
Yes
Refer to 4.14 Troubleshooting Procedure
for the Circulation System, probable
cause: The Supply Pump malfunctions
and then, repair or replace supply pump.
②
No
No
Replace the connection
harness.
No
Clean any ink build up or other
foreign matters on CV.
assembly and reassemble it.
①
6-9
Does the MV2 operate when
the connector of the other
operating solenoid valve is
Yes
connected to MV2?
Replace MV2 or clean any ink
build up or other foreign matter
on MV2.
Yes
Does the "Replenishment
Time-out" fault recur?
③
No
No