Host Print Service Check; Ink Cartridge Service Check - Lexmark Jetprinter 4079-00 series Service Manual

4079-00X
If the problem is not corrected, replace the logic board. Be sure to go
to the "Service Adjustment Mode" on page 4-4
position adjustment, and the direction offset adjustment.

Host Print Service Check

Symptom Explanation
The printer does not com-
municate with the host
computer.
FRU
1 • Incorrect Pro-
tocol Set
• Controller
Board

Ink Cartridge Service Check

Symptom Explanation
The printer does not
sense an ink cartridge
when one is installed.
If you are instructed to remove the ink cartridge assembly, it is rec-
ommended that you remove all ink cartridges, carefully drain the ink
from the lines into a plastic-lined waste can or absorbent material,
then replace the cartridges and wrap a packet of cleaning cloths or
paper towels over the connector end, secured with a rubber band.
2-22
Conditions That Could Cause This
Symptom
• Incorrect protocol set
• Controller board
Action
Run Test Print A.To enter Controller Diagnostics,
press and hold Menu and Print Buffer while turning
on the printer. After the POST is complete, the first
item in the Controller Diagnostics menu is displayed.
If the test runs successfully, disconnect the serial/
parallel interface cable, install the wrap plug (PN
1319128), and then run the wrap test (see
Load Test" on page
controller board.
Conditions That Could Cause This
Symptom
• Cartridge detection resistor
• Cartridge sensor cable
• Cartridge sensor
and perform the print
3-10. If the test fails, replace the
"Paper