Markem Imaje 9020, User Manual, Page: 92 / 182

Troubleshooting
A36163-B
92/182
A / D
No.
Description Context
Consequences
Check / Cause / Remedy / Solution
61
A U1: Make up
Valve malfunction The negative pressure
measured while make up 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 make
up to compensate for
evaporation.
1- Cartridge
-
Empty
-
Hollow needle blocked by unperforated
cartridge
2- Make up solenoid valve 1 locked closed
- Test
- If OK: pressure sensor (replace IC60)
- If not OK: IC60 or CPU or IC60 / 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 flows
from buffer tank to
accumulator at start-up or
during operation. Depending
on the results, the software
knows that the malfunction is
on U2.
Consequences: The IC60
stops and printing is
disabled.
Test solenoid valve 2:
- If OK: pressure sensor or blocked tube
(replace IC60)
- If not OK: IC60 or CPU or IC60 / CPU
connections
63
D
U3: Accumulator
valve malfunction Incorrect pressure levels
measured when ink flows
from buffer tank to
accumulator at start-up or
during operation. Depending
on the results, the software
knows that the malfunction is
on U3.
Consequences: The IC60
stops and printing is
disabled.
Test solenoid valve 3:
- If OK: pressure sensor or blocked tube
(replace IC60)
-
If not OK: IC60 or CPU or IC60 / CPU
connections
64
A U4: Condenser
Valve malfunction Incorrect pressure levels
measured when ink flows
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 IC60)
-
If not OK: IC60 or CPU or IC60 / CPU
connections