Lexmark WinWriter 100, Руководство по обслуживанию

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4076-0WJ
9
Maintenance Station Service Check
The maintenance station has two functions:
1. Cleans the print head nozzles during the print operation.
2. Seals the print head when it is not being used to prevent the noz-
zles from drying.
Note: if the failure remains, replace the system board.
FRU OR PROCEDURE ACTION
1 Maintenance Drive Assem-
bly Disconnect J4 from the system board.
Check for 18 ohms (±4 ohms)
between pins 1 and 2 at the motor. If
the reading is incorrect, replace the
maintenance drive assembly,
Check for motor pins shorted to the
motor housing. If you find a shorted
pin, replace the maintenance drive
assembly. If the symptom remains,
replace the system board.
A bind in the drive assembly can pre-
vent the motor from turning. Check for
binds and loose or worn parts in the
drive assembly. Also check the motor
gear
2 System Board Turn the printer off and disconnect J4
from the system board. Turn the
machine on and check for a pulse of
15 V dc between J4-1 and ground on
the system board as the machine
goes through POST.
3 Maintenance Rocker
Assembly Check for binds or wear.
4 Wiper A worn wiper will cause degraded
print quality just after a maintenance
cleaning. Check for loose or worn
wiper.
5 Cap A worn cap will cause the print head
nozzles to dry and clog. Check for
loose or worn cap.