Lexmark Jetprinter 4079-00 series, Service Manual

Page: 40 / 183

2-22
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 and perform the print
position adjustment, and the direction offset adjustment.
Host Print Service Check
Ink Cartridge Service Check
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.
Symptom Explanation
Conditions That Could Cause This
Symptom
The printer does not com-
municate with the host
computer. • Incorrect protocol set
• Controller board
FRU Action
1 • Incorrect Pro-
tocol Set
• Controller
Board
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
“Paper
Load Test” on page 3-10 . If the test fails, replace the
controller board.
Symptom Explanation
Conditions That Could Cause This
Symptom
The printer does not
sense an ink cartridge
when one is installed. • Cartridge detection resistor
• Cartridge sensor cable
• Cartridge sensor