User Maintenance 4-2
Ink reset ( ”PRIME” ) Black Head Only:
This must be carried out when one or more nozzles no longer print. This operation
is not required when the initial characters of the printout are incomplete, as this is
probably caused by the printer having been left inactive for a certain period.
Ink reset is not required for the color heads, as there is an automatic nozzle
cleaning cycle that takes place at each head change and machine power on.
The "PRIME" operation ejects a small quantity of ink. It is important that the
“PRIME" operation is performed only when strictly necessary, to avoid ink being
wasted and therefore reducing the cartridge life.
Do not carry out the ”PRIME” operation if the mechanical groups are
disconnected from the base. If the ”PRIME” slide receives the command with the
ink discharge tube disconnected from the blotting pad, any object or clothes near
it may be splashed with ink.
To enable the ink reset, set the printer to local mode (in this status the nozzles are
aligned to the rubber cap connected to the ink discharge tube).
Push the slide back and forth as shown in the figure, until some ink is seen (one or
two centimeters) in the tube below the slide.
PUSH
The motion of the slide compresses and releases the tube, forcing the ink
discharge and extraction. Press INSTALL CARTRIDGE to move the print head
carriage to the head loading position, and move the slide backwards and forwards
to empty the tube.
Press INSTALL CARTRIDGE to return the print head carriage to its rest position.
Run the print test to check the quality of printing.
Summary of Contents for DECcolorwriter 520ic
Page 1: ...DECwriter 500i DECcolorwriter 520ic LJ500 and LJ520 Service Manual EK LJ50E SV A01...
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Page 80: ...Electrical Interconnections 8 2 8 2 POWER SUPPLY BOARD...
Page 81: ...Electrical Interconnections 8 3 8 3 POWER SUPPLY CIRCUIT ON MAIN BOARD...
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