Troubleshooting
SECTION 06 Troubleshooting
10/54
A / D
No.
Description Context
Consequences
Check / Cause / Remedy / Solution
61
A
U1: Additive Valve
malfunction
The negative pressure
measured while additive is
being pumped from the
cartridge is too high
Consequences:
Printing is still possible but
the ink concentration will be
affected by the lack of
additive to compensate for
evaporation.
1- Cartridge
-
Empty
-
Hollow needle blocked by unperforated tip
O-ring.
2- Additive solenoid valve 1 locked closed
- Test
- If OK: pressure sensor (replace IMM)
- If not OK: IMM or CPU or IMM / CPU
connections
3- Clogged or bent hollow needle
Remove the tip holder and clean or replace it.
62
D
U2: Buffer Valve
malfunction
Incorrect pressure levels
measured when ink flowed
from buffer tank to
accumulator at start-up or
during operation. Depending
on the results, the software
makes the difference
between SVs 2 and 3.
Consequences:
The IMM
stops and printing is
disabled.
Test solenoid valve 2:
- If OK: pressure sensor or blocked tube
(replace IMM)
- If not OK: IMM or CPU or IMM / CPU
connections
63
D
U3: Accumulator
valve malfunction
Incorrect pressure levels
measured when ink flowed
from buffer tank to
accumulator at start-up or
during operation. Depending
on the results, the software
makes the difference
between SVs 2 and 3.
Consequences:
The IMM
stops and printing is
disabled.
Test solenoid valve 3:
- If OK: pressure sensor or blocked tube
(replace IMM)
-
If not OK: IMM or CPU or IMM / CPU
connections
64
A
U4: Condenser
Valve malfunction
Incorrect pressure levels
measured when ink flowed
from condenser to
accumulator at start-up or
during operation.
Consequences:
Printing
remains possible, but
malfunctions will occur.
Test solenoid valve 4:
- If OK: pressure sensor or blocked tube
(replace IMM)
-
If not OK: IMM or CPU or IMM / CPU
connections
