Markem Imaje 9020, User Manual, Page: 126 / 182

Troubleshooting
A36163-B
126/182
Replacing the piezo board
Tools:
1.5 mm Allen key ; 2.5 mm flat-bladed screwdriver ; 4 mm and 7 mm box wrench ;
tweezers.
CAUTION: Turn off the printer and unplug it from its AC outlet.
The head must be rinsed (partial drain of the printer).
Place the head higher than the ink circuit IC60.
Perform this operation in a dust-free environment.
Residual ink or make up may pour out, take appropriate precautions.
Disassembly:
□ Disassemble the rear head cover.
□ Disassemble the 4 solenoid valve block. Take care with seals (one rectangular 3-hole
gasket, one square 4-hole gasket)
□ Unscrew the two screws from the ADP board and withdraw it from its housing without
disconnecting it.
□ Unscrew the two screws from the "contacts" board of the 4 solenoid valve block and
withdraw it without disconnecting it.
□ Unscrew the two screws from the 4 solenoid valve block bracket. Note that the two
screws are not identical. Carefully note where the wires and hoses pass. Disconnect
the intake hose from the recovery solenoid valve. Withdraw the bracket without
disconnecting the hoses. Take care with the seals (two O-rings).