2Tm/Ttm Controller Card Assembly Communication Failure; Tray 3 Media Size Failure - Lexmark W850n Service Manual

Step
11 Perform a print test.
Does the error still occur?

980.00 2TM/TTM controller card assembly communication failure

Step
1 Check the 2TM/TTM controller card assembly and the
printer engine card assembly for proper connection.
Are connectors P541 and P413 on the above cards
connected properly?
2 Perform a print test.
Does the error still occur?
3 Perform a print test.
Does the error still occur?

Tray 3 media size failure

Step
1 Check the media.
Pull out tray 3, and visually check it.
Is the media loaded in tray 3 properly?
2 Check the media.
Pull out tray 3, and visually check it.
Are the front media guide and rear media guide on tray
3 set correctly?
3 Check the switch (TTM media size) for proper
installation.
Pull out tray 3, and visually check it.
Is the switch (TTM media size) installed properly?
Check
Check
Check
Yes
Replace the printer Problem solved.
engine card
assembly.
Refer to the Printer
Service Manual.
Yes
Problem solved. Replace the
connection.
Replace the 2TM/ Problem solved.
TTM controller card
assembly.
Go to "2000-sheet
dual input (TTM)—
2TM/TTM controller
card assembly
removal" on
page 4-115.
Go to step 3.
Replace the printer Problem solved.
engine card
assembly.
Refer to the Printer
Service Manual.
Yes
Go to step 2. Load media
properly.
Go to step 3. Set the parts
properly.
Go to step 4. Install the switch
(TTM media size)
correctly.
Go to
dual input (TTM)—
switch (TTM media
size) removal" on
page
Diagnostic information
4024-110
No
No
No
"2000-sheet
4-83.
2-59