HP 400 - Manual (Page 73)

5-10 Problem Resolution
Solving Carriage Stall Conditions
A carriage stall error condition occurs if the printer detects a problem with the movement of the print
cartridge cradle along the printer carriage. In order to exit from a carriage stall, you have to turn the
printer off.
The Change Cartridge light is on when an HP DeskJet 400 printer detects a service station motor stall .
The service station is the part of the mechanism below the print cartridge when the print cartridge is at
the right end of the mechanism (the “home” position). It serves to cap the print cartridge so that the
nozzles will not dry out. In order to exit from a service station motor stall, you have to turn the printer off.
Caution Do not attempt to manually move the print cartridge or print cartridge cradle from
the home position (right end of the mechanism). The mechanism locks the print
cartridge cradle in the home position, and attempting to slide the cradle or print
cartridge in the locked position may damage the printer.
1. Turn the printer off and then back on.
– If the stall condition does not reappear, no further
troubleshooting is necessary. Monitor the printer for
a period of time to make sure that the stall condition
does not reappear.
– If a carriage or service station motor stall occurs
again, continue on to the next step.
2. Open the access door.
3. Look inside the printer and determine if the print cartridge
and print cartridge cradle are in the home position (right
end of the mechanism).
– If the print cartridge and cradle are stuck in the home
position, return the printer for repair.
– If the print cartridge and cradle are not in the home
position, continue on to the next step.
4. Turn the printer off. Because of the stall condition, the
printer should turn off with the print cartridge out of the
home position.