WILLETT 430 - Page 171

430 Ink Jet Printer Service and Maintenance Manual
154
Issue 2
Part No. 306-0430-102
Dirty printhead Clean printhead
(see
Umbilical Purge
, page 160).
Viscosity incorrect Refer to the viscosity error icon in this table for
possible causes and remedial action.
Modulation incorrect Adjust as required
(see
Modulation Calibration (Manual)
).
Head heater circuitry faulty Replace head heater
(see
Head Manifold
, page 131),
I/O board (see
I/O Board
, page 110) or
CPU board (see
CPU Board
, page 112).
Faulty nozzle assembly or
modulation circuitry
Replace nozzle
(see
Nozzle Assembly
, page 137),
I/O board (see
I/O Board
, page 110) or
CPU board (see
CPU Board
, page 112).
Charge electrode or circuitry
faulty
Replace EHT Block cabling
(see
EHT Block
, page 135),
I/O board (see
I/O Board
, page 110) or
CPU board (see
CPU Board
, page 112).
Charge
Error
Phase detector or circuitry faulty Replace phase detector cabling
(see
Phase Detector
, page 133),
I/O board (see
I/O Board
, page 110) or
CPU board (see
CPU Board
, page 112).
Table 43 Display Icons