Printronix P5000 Maintenance Manual page 77

Message
RIBBON STALL
Table 2. Message List
Explanation
The controller board does
not detect ribbon movement.
List Of Messages
Solution
1. Cycle power. If the message
appears, power off the printer.
Check that both ribbon hubs are
securely mounted on the ribbon
motor shafts. If either hub is
cracked or otherwise damaged,
replace both ribbon hubs.
2. Inspect the ribbon mask for
excessive ink build-up or a torn/
bunched ribbon. Clean the ribbon
mask and replace the ribbon as
required to insure unobstructed
movement of the ribbon between
the ribbon mask and hammer
bank cover.
3. Check the platen gap and adjust
if required. If the gap is too
narrow, it can restrict ribbon
movement through the ribbon
mask.
4. Remove the paper path or
pedestal top cover. Reseat the
cable connections of both ribbon
drive motors.
5. Power on the printer. Using a
screwdriver, short across the
ribbon guide screws to reverse
ribbon hub motion. Check for a
ribbon drive motor that will not
wind the ribbon. If the ribbon will
not wind in one or both directions,
replace the defective ribbon drive
motor(s). If the ribbon winds in
both directions, replace the
controller board and download
new function code. Record the
message and return it with
defective board.
77